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MCQ Questions for Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables

Pair of Linear Equations in Two Variables Class 10 MCQ Questions with Answers

Question 1.

Graphically, the pair of equations
6x – 3y + 10 = 0
2x-y + 9 = 0
represents two lines which are

(A) intersecting at exactly one point
(B) intersecting at exactly two points
(C) coincident
(D) parallel
Answer:
(D) parallel

Explanation:
\(\frac{a_{1}}{a_{2}}=\frac{6}{2}=3\) \(\frac{b_{1}}{b_{2}}=\frac{-3}{-1}=3\) \(\frac{c_{1}}{c_{2}}=\frac{10}{9}\)
⇒ \(\frac{a_{1}}{a_{2}}=\frac{b_{1}}{b_{2}} \neq \frac{c_{1}}{c_{2}}\)
So, the system of linear equations is inconsistent (no solution) and graph will be a pair of parallel lines.

Question 2.

The pair of equations x + 2y + 5 = 0 and -3x -6y + 1 = 0 have:

(A) a unique solution
(B) exactly two solutions
(C) infinitely many solutions
(D) no solution
Answer:
(D) no solution

Explanation:
\(\frac{a_{1}}{a_{2}}=\frac{1}{-3}\)\(=-\frac{1}{3},\frac{b_{1}}{b_{2}}{a}\)\(\frac{-1}{3},\frac{c_{1}}{c_{2}}=\frac{5}{1}\)
\(\frac{a_{1}}{a_{2}}=\frac{b_{1}}{b_{2}} \neq \frac{c_{1}}{c_{2}}\)
So, the system of linear equations has no solution

Question 3.

If a pair of linear equations is consistent, then the lines will be: ‘

(A) parallel
(B) always coincident
(C) intersecting or coincident
(D) always intersecting E
Answer:
(C) intersecting or coincident

Explanation:
Condition for consistency:
\(\frac{a_{1}}{a_{2}} \neq \frac{b_{1}}{b_{2}}\)has unique solution (consistent), i..e.,
intersecting at one point
\(\text { or } \frac{a_{1}}{a_{2}}=\frac{b_{1}}{b_{2}}=\frac{c_{1}}{c_{2}}\)
(Consistent lines, coincident or dependent)

Question 4.

The pair of equations x = a and y = b graphically represents lines which are :

(A) parallel
(B) intersecting at (b, a)
(C) coincident
(D) intersecting at (a, b)
Answer:
(D) intersecting at (a, b)

Explanation:
(x= a) is the equation of a straight line parallel to the y-axis at a distance ‘a’ from it. Again, y = b is the equation of a straight line parallel to the x-axis at a distance b from it. So, the pair of equations x = a and y = b graphically represents lines which are intersecting at (a,b).

Question 5.

The pair of equations y = 0 and y = – 7 has :

(A) one solution
(B) two solutions
(C) infinitely many solutions
(D) no solution
Answer:
(D) no solution

Explanation:
We know that equa tion of I he form y — a is a line parallel to r-axis at a distance V from it. y = 0 is the equation of the r-axis and y = -7 is the equation of the line parallel to the .v-axis. So, these two equations represent two parallel lines. Therefore, there is no solution

Question 6.

One equation of a pair of dependent linear equations is -5x + 7y = 2. The second equation can be:

(A) 10x + 14y + 4 = 0
(B) -10x – 14y + 4 = 0
(C) -10x + 14y + 4 = 0
(D) 10x – 14y= – 4
Answer:
(D) 10x – 14y= – 4

Explanation:
\(\frac{a_{1}}{a_{2}}=\)=\(\frac{b_{1}}{b_{2}}\)=\(\frac{c_{1}}{c_{2}}\)=\(\frac{1}{k}\)
Given equation of line is, – 5x + 7y – 2 = 0
Here,a1 = – 5, b1 = 7, c1 = – 2
From EQuestion (i), – \(\frac{5}{a_{2}}\) = \(\frac{7}{b_{2}}\) = \(\frac{2}{c_{2}}=\) = \(\frac{1}{k}\)
⇒ a2 = – 5k, b2 = 7k, c2 = – 2k
where k is any arbitrary constant.
putting k =2, then a2 = – 10, b2 = =14 and c2 = – 4
⇒ The required equation of line becomes,
a2x + b2y + c2 = 0
⇒ – 10x + 14y – 4 = 0
⇒ 10x – 14y + 4 = 0

Question 7.

For what value of k, do the equations 3x – y + 8 =0 and 6x – ky = – 16 represent coincident lines

(A) \(\frac{1}{2}\)
(B) \(\frac{-1}{2}\)
(C) 2
(D) -2
Answer:
(C) 2
Explanation:
3x – y = – 18
6x – ky = – 16
For coincident lince,
⇒ \(\frac{a_{1}}{a_{2}}\)= \(\frac{b_{1}}{b_{2}}\) = \(\neq \frac{c_{1}}{c_{2}}\)
⇒ \(\frac{3}{6}\) = \(\frac{-1}{-k}\) \(\frac{-8}{-16}\)
⇒ \(\frac{1}{2}\) = \(\frac{1}{k}\) = \(\frac{1}{2}\)

Question 8.

If the lines given by 3x + 2ky = 2 and 2x + 5y + 1 = 0 are parallel, then the value of k is

(A) \(\frac{-5}{4}\)
(B) \(\frac{2}{5}\)
(C) \(\frac{15}{4}\)
(D) \(\frac{3}{2}\)
Answer:
(C) \(\frac{15}{4}\)

Explanation:
For parallel lines (or no solution)
\(\frac{a_{1}}{a_{2}}\) = \(\frac{b_{1}}{b_{2}} \neq \frac{c_{1}}{c_{2}}\)
⇒ \(\frac{3}{2}\) = \(\frac{2 k}{5} \neq \frac{-2}{1}\)
⇒ 4k = 15
⇒ k = \(\frac{15}{4}\)

Question 9.

A pair of linear equations which has a unique solution x = 2, y = -3 is:

(A) x + y = -1
2x – 3y = -5

(B) 2x + 5y = -11
4x + 10y = -22

(D) x-4y-14 = 0
x -y-13=0
Answer:
Option (B) & (D) is correct

Explanation:
(B) 2x + 5y = —11 and 4,r + 10y = -22
Put x = 2 and y = -3 in both the equations,
LHS = 2x + 5y ⇒ 2 x 2 + (-3)
⇒ 4- 15 = -11 = RHS
LHS = 4x + 10y -> 4(2) + 10(-3)
⇒8 – 30 – 22 = RHS
(D) x – 4y – 14 = 0 and 5x – y – 13 = 0
x – 4y = 14 and 5x – y = 13
Put x = 2 and y = -3 in both the equations,
LHS = x – 4y ⇒ 2 – 4(- 3) ⇒ 2 + 12 = 14 = RHS
LHS = 5x – y ⇒ 5(2) – (- 3) ⇒ 10 + 3 = 13 = RHS

Question 10.

Aruna has only ₹ 1 and ₹ 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is ₹ 75, then the number of ₹ 1 and ₹ 2 coins are, respectively

(A) 35 and 15
(B) 35 and 20
(C) 15 and 35
(D) 25 and 25
Answer:
(D) 25 and 25

Explanation:
Let the number of ₹ 1 coins = x and the number of ₹ 2 coins = y
So, according to the question,
x + y = 50 ………(i)
x + 2y =75 ………(ii)
Subtracting equation (i) from (ii),
y = 25
Substituting value of y in (i)x = 25
So, y = 25 and x = 25

Question 11.

The father’s age is six times his son’s age. Four years hence, the age of the father will be four times his son’s age. The present ages, in years, of the son and the father are, respectively:

(A) 4 and 24
(B) 5 and 30
(C) 6 and 36
(D) 3 and 24
Answer:
(C) 6 and 36
Explanation:
Let the present age of father be x years and the present age of son be y years.
∴ According to the question,
x = 6y …(i)
Age of the father after lour years = (x + 4) years
Age of son after four years = (y + 4) years Now, according to the question,
x + 4 = 4(y + 4)
x + 4 = 4(y + 4)
x +4 = 4y + 16
⇒ 6y – 4y = 16 – 4
⇒ 2y = 12
⇒ y = 6
x = 6 × 6 = 36 years
y = 6 years
So, the present ages of the son and the father are 6 yeaers and 36 years, respectiveiy.

Question 12.

If x = a, y = fa is the solution of the equations x – y = 2 and x + y = 4, then the values of a and fa are, respectively

(A) 3 and 5
(B) 5 and 3
(C) 3 and 1
(D) – 1 and 3
Answer:
(C) 3 and 1

Explanation:
If (a, b) is the solution of the given equations, then it must satisfy the given equations, so,
a – b = 2 ………(i)
17 a + b = 4 ……. (ii)
⇒ 2a = 6[Adding (i) and (ii) ]
⇒ a = 3
Now, 3 + 6 = 4
⇒ b = 1
So, (a, b) = (3, 1).

Question 13.

The larger of two supplementary angles exceed the smaller by 18°, then the angles are:

(A) 99°, 81°
(B) 98°, 82°
(C) 97°, 83°
(D) None of these.
Answer:
(A) 99°, 81°

Explanation:
Let one angle be x.
Then, other angle (it’s supplementary angle)
= (180° – x)
Given, x + 18° = (180° – x)
2x = 180° – 18°
2x = 162°
x = 81°
other angle = 180° – 81° = 99°
Hence two required angles are 81° and 99°

Question 14.

If 2x + 4 y = 23 and 4x – y = 19, then the values of ( 5y = 2x) \(\left(\frac{y}{x}-2\right)\) and are:

(A) \(30, \frac{5}{7}\)
(B) \(31, \frac{-5}{7}\)
(C) \(32, \frac{5}{7}\)
(D) None of these.
Answer:
(B) \(31, \frac{-5}{7}\)
Explanation:
Given,
2x + y = 23 …(i) and 4x – y = 19 …(ii)
On adding eQuestion (i) and (ii), we get
6x = 42 ⇒ x = 7
putting the value of x in eQuestion (i), we get
⇒14 + y =23
⇒y = 23 —14 = 9
Hence, 5y – 2x = 5 x 9 – 2 x 7 = 45 – 14 =31.
and \(\frac{y}{x}\) -2 = \(=\frac{9}{7}\) -2 = \(\frac{9-14}{7}\) = \(\frac{-5}{7}\)

Assertion and Reason Based MCQs

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is NOT the correct explanation of A
(C) A is true but R is false
(D) A is false and R is True

Question 1.

Assertion (A): If the pair of linear equations 3x 4 y = 3 and 6x 4 ky = 8 does not have a solution, then the value of k = 2.
Reason (R): If the pair of linear equations x 4 y – 4 = 0 and 2x 4 ky = 3 does not have a solution, then the value of k = 2.

Answer:
(B) Both A and R are true but R is NOT the correct explanation of A

Explanation:
In case of assertion:
Given equation are:
3x + y – 3 = 0
6x + ky – 8 = 0
Comparing eQuestion (i) with a₁ x + b₁y + c₁ = 0 and eq. (ii) with a₂x + b₂y + c₂ = 0 we get,
a₁ = 3, a₂ = 6, b₁ = 1 b₂ = k, c₁ = -3 and c₂ = – 8 Sine, given equation has solution.

So,
\(\frac{a_{1}}{a_{2}}\) = \(=\frac{b_{1}}{b_{2}} \neq \frac{c_{1}}{c_{2}}\)
⇒\(\frac{3}{6}\) = \(\frac{1}{k} \neq \frac{-3}{-8}\)
⇒\(\frac{1}{2}\) = \(\frac{1}{k} \neq \frac{3}{8}\)
Either \(\frac{1}{2}\) = \(\frac{1}{k}\) or \(\frac{1}{k} \neq \frac{3}{8}\)
⇒k = 2 or \(k \neq \frac{3}{8}\)
henece, the value of k is 2. Thus assertion is correct.
In case of reason :
Given equation :
x + y – 4 = 0
2 x z + ky – 3 = 0

Here \(\frac{a_{1}}{a_{2}}\) = \(\frac{1}{2}\),\(\frac{b_{1}}{b_{2}}\) = \(\frac{1}{k}\)
and \(\frac{c_{1}}{c_{2}}\) = \(\frac{-4}{-3}\) = \(\frac{4}{3}\)
System has solution
⇒\(\frac{a_{1}}{a_{2}}\) =\(\frac{b_{1}}{b_{2}} \neq \frac{c_{1}}{c_{2}}\)
\(\frac{1}{2}\) = \(\frac{1}{k} \neq \frac{4}{3}\)
k =2 or k ⇒\(k \neq \frac{3}{4}\)
Hence, the value of k is 2.
Thus, reason is correct. Hence both assetion and reason are correct but reason is not the correc t explanation for assertion.

Question 2.

Assertion (A): For all real values of c, the pair of equations x – 2y = 8 and 5x – 10y = c have a unique solution.
Reason (R): Two lines are given to be parallel. The equation of one of the lines is 4x + 3y = 14,12x + 9y = 5.

Answer:
(D) A is false and R is True

Explanation:
In case of assertion:
x -2y = 8
5x – 10 = c
⇒ \(\frac{a_{1}}{a_{2}}\) = \(\frac{1}{5}\), \(\frac{b_{1}}{b_{2}}\) = \(\frac{-2}{10}\) = \(\frac{1}{5}\) and = \(\frac{c_{1}}{c_{2}}\) = \(\frac{-8}{-c}\)= \(=\frac{8}{c}\)
As \(\frac{a_{1}}{a_{2}}\) = \(\frac{b_{1}}{b_{2}}\), so system of equations can never have unique solution.
∴ Assertion is incorrect.
In case of reason:
The equation of one line is 4x + 3y = 14. We know that if two lines a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 are parallel, then
\(\frac{a_{1}}{a_{2}}\) = \(\frac{b_{1}}{b_{2}}\) = \(\frac{c_{1}}{c_{2}}\)
or \(\frac{4}{a_{2}}\) = \(\frac{3}{b_{2}}\) =\(\frac{-14}{c_{2}}\)
⇒\(\frac{a_{2}}{b_{2}}\) = \(\frac{4}{3}=\) \(\frac{12}{9}\)
hence one of the possible, second parallel line is 12 x + 9y = 5.
∴ Reason is correct.
Hence assetin is in correct but reason is correct.

Question 3.

Assertion (A): If the equation 3x – y + 8 = 0 and 6x – ky = -16 represent coincident lines, then the value of k = 2.
Reason (R): If the lines given by 3x + 2Ay = 2 and 2x + 5y + 1 = 0 are parallel, then the value of k is 15.

Answer:
(C) A is true but R is false

Explanation:
In case of assertion:
3x – y = -18
6x – ky = -16
For coincident lines,
⇒ \(\frac{a_{1}}{a_{2}}\) =\(\frac{b_{1}}{b_{2}}\) = \(\frac{c_{1}}{c_{2}}\)
⇒ \(\frac{3}{6}\) = \(\frac{-1}{-k}\) = \(\frac{-8}{-16}\)
⇒ \(\frac{1}{2}\) = \(\frac{1}{k}\) = \(\frac{1}{2}\)
So, k = 2.
∴ Assertion is correct.
In case of reason:
For parallel lines ( or no solution)
\(\frac{a_{1}}{a_{2}}\) = \(\frac{b_{1}}{b_{2}}\) = \(\frac{c_{1}}{c_{2}}\)
⇒ \(\frac{3}{2}\) = \(\frac{2 k}{5}\) = \(\frac{-2}{1}\)
⇒ 4k = 15
⇒ k = \(\frac{15}{4}\)
∴ Reason is incorrect.
Hence, assertion is but reason is incorrect.

Question 4.

Assertion (A): If 4 chairs and 3 tables cost ₹ 2100 and 5 chairs and 2 tables cost ₹ 1750, then the cost of 1 chair is ₹ 150.
Reason (R): Sum of the ages of a father and the son is 40 years. If father’s age is 3 times that of his son, then the son’s age is 12 years.

Answer:
(C) A is true but R is false

Explanation:
In case of assertion:
Let cost of 1 chair be ₹ x and cost of 1 table be ₹ y
According to the question,
4x + +3y = 2100
5x + 2y = 1750
Multiplying eqn. (i) by 2and enQuestion (ii) by 3, we get
8x + 6y = 4200
15x + 6y = 5250
eqn. (iv) – eqn.(iii)
⇒ 7x = 1050
⇒x = 150
Substituting the value of x in (i) we gel y = 500 Thus, the cost of one chair and one table are ∴ 150 and ∴ 500 respectively.
∴ Assertion is correct. is
In case of reason:
Let age of father and son be x and y respectively.
Then, x + y =40 …(i)
and x = 3y …(ii)
By solving eqns. (i) and (ii), we get
x = 30 and y = 10
Thus, the ages of father and son are 30 years and 10 years.
∴ Reason is incorrect.
Hence, Assertion is correct but reason is incorrect.

Question 5.

Assertion (A): The solution of the pair of linear 19 equations x + y = 5 and 2x – 3y = 4 is x = \(\vec{a}\) and \(\vec{a}\)
Reason (R): The solution of the pair of linear equations 3x + 4y = 10 and 2x – 2y = 2 is x = 2 and y = 1.

Answer:
(B) Both A and R are true but R is NOT the correct explanation of A

Explanation:
In case of assertion:
By elimination method,
x + y = 5 …(i)
2x – 3y —4 …(ii)
Multiplying equation (i) by (ii), we obtain
2x + 2y =10 …(iii)
Subtracting equation (ii) from equation (iii), we obtain
5y = 6
y = \(\frac{6}{5}\)
Substituting the value in equation (i), we obtain
x = 5 – \(\frac{6}{5}\) = \(\frac{19}{5}\)
x = \(\frac{19}{5}\),y =\(\frac{6}{5}\)
∴ Assertion is correct.
In case of reason:
By elimination method,
3x + 4y = 10
2x – 2y = 2
Multiplying equation (ii) by 2, we ob tain
4x – 4y = 4
Adding equstion (i) and (ii) , we obtain
7x = 14
x = 2
Substituting in equstion (i), we obtain
6 + 4y = 10
4y = 4
y = 1
x = 2, y = 1
∴ Reason is correct.
HEnce ,both assertion and reason aer correct but reasn is not the correct explanation for assertion

Question 6.

Assertion (A): In a AABC, ∠C = 3∠B = 2(∠A + ∠B), then ∠A = 20°.
Reason (R): The angles of a triangle are x, y and 40°. The difference between the two angles x and y is 30°, then A = 85° and y = 55°.

Answer:
(B) Both A and R are true but R is NOT the correct explanation of A

Explanation:
In case of assertion:
Given Aial,
∠C = 3/B = 2(∠A + ∠B) 3∠B = 2(∠A +∠B)
3∠B = 2(∠A + 2∠B)
3∠B =2 ∠A + 2 ∠B
∠B = 2 ∠A
2 ∠A -∠B = 0 …(i)
We know that the sum ot the measures of all angles of a triangle is 180″. Therefore,
∠A + ∠B + ∠C = 180°
∠A + ∠B + 3∠B = 180°
∠A + 4∠B = 180° …(ii)
Multiplying equation (i) by 4, we obtain
8∠A – 4∠B = 0 ……….(iii)
Adding equations (ii) and (iii), we obtain
9∠A = 180°
∠A = 20°
∴ Assertion is correct.
In case of reason:
Given that, A, y and 40°are the angels of a triangle.
x + y + 40° = 180°
[Since the sum of all the angels of a triangle is 180°]
⇒ x + y = 140° …(i)
Also, x – y =30° …(ii)
On adding Eqs. (i) and (ii), we get
2x = 170°
⇒x = \(\frac{170^{\circ}}{2}\)
⇒ x = 85°
On putting x = 85° in EQuestion (i), we get
85° + y = 140°
y = 140° -85° = 55°
⇒ y = 55°
Hence, the required values of x and y are 85° and 55°, respectively.
∴ Reason is correct.
Hence, both assertion and reason are correct but reason is not the correct explanation for assertion.

Case – Based MCQs

Attempt any four sub-parts from each question. Each sub-part carries 1 mark.
I. Read the following text and answer the following questions on the basis of the same:
It is common that Governments revise travel fares from time to time based on various factors such as inflation (a general increase in prices and fall in the purchasing value of money) on different types of vehicles like auto, Rickshaws, taxis, Radio cab etc. The auto charges in a city comprise of a fixed charge together with the charge for the distance covered. Study the following situations.

Name of the city	Distance travelled (km)	Amount paid (₹)
City A	10	75
	15	110
City B	8	9
	14	145

Situation 1: In city A, for a journey of 10 km, the charge paid is ₹ 75 and for a journey of 15 km, the charge paid is ₹ 110.
Situation 2: In a city B, for a journey of 8 km, the charge paid is ₹ 91 and for a journey of 14 km, the charge paid is ₹ 145.
Refer situation 1

Question 1.

If the fixed charges of auto rickshaw be ₹ x and the running charges be ₹ y km/hr, the pair of linear equations representing the situation is

(A) x + 10y = 110, x + 15y = 75
(B) x + 10y =75, x + 15y = 110
(C) 10x + y =110,15x + y = 75
(D) 10x + y = 75,15x + y =110

Answer:
(B) x + 10y =75, x + 15y = 110

Explanation:
According to given situation, we have
x + 10y = 75 …(i)
x + 15y = 110 …(ii)

Question 2.

A person travels a distance of 50 km. The amount he has to pay is

(A) ₹ 155
(B) ₹255
(C) ₹ 355
(D) ₹ 455
Answer:
(C) ₹ 355

Explanation:
Solving two equations,

Now, putting y= 7 in equation (i)
x – 10 x 7 =75′
y + 70 = 75
x =75 – 70
x = 5
Now, if a person travels a distance of 50 km then, amount
= x + 50y
= 5 + 50 x 7
= 5 + 350
= 355
Refer situation 2

Question 3.

What will a person have to pay for travelling a distance of 30 km ?

(A) ₹ 185
(B) ₹ 289
(C) ₹ 275
(D) ₹ 305
Answer:
(B) ₹ 289

Question 4.

The graph of lines representing the conditions are:
(situation 2)

Answer:

II. Read the following text and answer the following questions on the basis of the same:
Places A and B are 100 km apart on a highway. One car starts from A and another from B at the same time. If the cars travel in the same direction at different speeds, they meet in 5 hours. If they travel towards each other, they meet in 1 hour.

Question 1.

Assuming that the speed of first car and second car be u km/h and v km/h respectively.
What is the relative speed of both cars while they are travelling in the same direction ?

(A) (u + v) km/hr
(B) (u – v) km/hr
(C) (u/v) km/hr
(D) (uv) km/hr
Answer:
(B) (u – v) km/hr

Explanation:
Relative speed of both cars while they are travelling in same direction = (u – v) km/hr.

Question 2.

What is the relative speed of both cars while they are travelling towards each other ?

(A) (u + v) km/hr
(B) (u – v) km/hr
(C) (u/v) km/hr
(D) (uv) km/hr
Answer:
(A) (u + v) km/hr

Explanation:
Relative speed of both cars while they are travelling in opposite directions i.c., travelling towards each other = (u + v) km/hr.

Question 3

What is the actual speed of one car?

(A) 60 km/hr
(B) 40 km/hr
(C) 100 km/hr
(D) 20 km/hr
Answer:
(A) 60 km/hr

Explanation:
Let the speeds of first car and second car be u km/hr and’v km/hr respectively.
According to the given information.
5 (u – v) = 100
u – v = 20 „.(i)
u + v = 100 ……..(ii)
Soliving eqs. (i) and (ii),
we get u = 60 km/hr.

Question 4.

What is the actual speed of pther car?

(A) 60 km/hr
(B) 40 km/hr
(C) 100 km/hr
(D) 20 km/hr
Answer:
(B) 40 km/hr

Explanation:
Form above question 3, referring to the solution of both equations
v = 40 km/hr

Question 5.

The given problem is based on which mathematical concept

(A) Pair of linear equations
(B) Quadratic equations
(C) Polynomials
(D) none of the above
Answer:
(A) Pair of linear equations

Explanation:
The given problem is based on pair of linear equations.

III. Read the following text and answer the following questions on the basis of the same:
John and Jivanti are playing with the marbles in the playground. They together have 45 marbles and John has 15 marbles more than Jivanti.

Question 1.

The number of marbles Jivanti had:

(A) 15
(B) 30
(C) 40
(D) 5
Answer:
(A) 15

Explanation:
Lei the no. of marbles, John and Jivanti have, be x and y respectively. According to the given information,
x + y = 45 ……..(i)
x – y =15 …(ii)
Solving eqs. (i) and (ii), we get
x = 30 and y = 15

Question 2.

The number of marbles John had:

(A) 40
(B) 30
(C) 15
(D) 20
Answer:
(B) 30

Explanation:
According to the solution of question 1, we get x = 30.

Question 3.

If 45 is replaced by 55 in the above case discussed in the question, then the number of marbles Jivanti have:

(A) 15
(B) 30
(C) 20
(D) 35
Answer:
(C) 20

Explanation:
According to given problem,
x + y = 55 …(i)
x – y = 15 …(ii)
Solving eqs.(i) and (ii), we get
x = 35 and y = 20.

Question 4.

According to the question 3, the number of marbles John have:

(A) 30
(B) 40
(C) 45
(D) 35
Answer:
(D) 35

Explanation:
From above question 3, we get x = 35. Hence, John had 35 marbles.

Question 5.

The given problem is based on which mathematical concept ?

(A) pair of linear equations
(B) Quadratic equations
(C) Polynomials
(D) None of the above
Answer:
(A) pair of linear equations

Explanation:
The given problem is based on pair of linear equations.

MCQ Questions for Class 10 Maths with Answers

MCQ Questions for Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables Read More »

MCQ Questions for Class 10 Maths Chapter 1 Real Numbers

MCQ Questions / Prasanna

Real Numbers Class 10 MCQ Questions with Answers

Question 1.

n²– 1 is divisible by 8, if n is:

(A) an integer.
(B) a natural number.
(C) an odd integer.
(D) an even integer.
Answer:
(C) an odd integer.

Explanation:
Any odd integer can be written as 2m + 1.
put n = 2m + 1 in n²– 1
n²– 1 =(n + 1)(n-1) (2m + 2)(2m) = 4m(m + 1 ) The product of two consecutive numbers is divisible by 2. Thus, m(m + 1) is divisible bv 2. Let m(m + 1) = 2k
n²– 1 =(n + 1)(n-1)= (2m + 2)(2m)
4m(m + 1) = 4 × 2k =8k
1Thus, if n is an odd integer then n²-1 is divisible by 8.

Question 2.

The largest number which divides 70 and 125, leaving remainders 5 and 8, respectively, is:

(A) 13.
(B) 65.
(C) 875.
(D) 1,750.
Answer:
(A) 13.

Explanation:
Required largest number = HCF 1 of (70 – 5) and (125 – 8) = HCF of 65 and I 117 = 13

Question 3.

If two positive integers a and b are written as a = x³y² and b = xy²; x, y are prime numbers, then HCF (a, b) is:

(A) xy.
(B) xy²
(C) x³y³
(D) x²y²
Answer:
(B) xy²

Explanation:
Since n-x³y³x × x × x × y × y and b – xy³=x × y × y × y, Thus, HCF: of a and b = x × y × y =x y²

Question 4.

If the HCF of 65 and 117 is expressible in the form 65m – 117, then the value of m is

(A) 4.
(B) 2.
(C) 1.
(D) 3.
Answer:
(B) 2.

Explanation:
By the Ludid’s division algorithm,
HCF of (65, 117) = 13
Since 65m – 117 = 13 › m = 2

Question 5.

If two positive integers p and q can be expressed as p = ab² and q = a³b; a, b being prime numbers, then LCM (p, q) is

(A) ab
(B) a²b²
(C) a³b³
(D) a²b²
Answer:
(C) a³b³

Explanation:
Since p = ab²=a x b x b
q=a³b = a x a x a x b x b =
Thus, LCM of p and q = a x a x a x b x b = a³b²

Question 6.

The least number that is divisible by all the numbers from 1 to 10 (both inclusive) is

(A) 10.
(B) 100.
(C) 504.
(D) 2,520.
Answer:
(D) 2,520.

Explanation:
Required number = LCM( 1,2, 3,4, 5, 6,8, 9,10)
=1 × 2 × 2 × 2 × 3 × 3 × 5 × 7 = 2,520

Question 7.

The product of a non-zero rational and an irrational number is :

(A) always irrational.
(B) always rational.
(C) rational or irrational.
(D) one.
Answer:
(A) always irrational.

Explanation:
The product of a non-zo rational with and an irrational number alwavs irrational.

Question 8.

The decimal expansion of the rational number 14587 wyj terminal after : 1250

(A) one decimal place.
(B) two decimal places.
(C) three decimal places.
(D) four decimal places.
Answer:
(D) four decimal places.

Explanation:
\(\frac{14587}{1250}=\frac{14587}{2 \times 5^{4}}=\frac{14587}{2 \times 5^{4}} \times \frac{2^{4}}{2^{4}}\)
=\(\frac{14587 \times(2)^{3}}{10^{4}}=\frac{116,696}{10000}=11.6696\)

Question 9.

\(\frac{1}{\sqrt{2}}\)= is a/an

(A) fraction
(B) rational number
(C) irrational number
(D) none of these
Answer:
(C) irrational number

Explanation:
\(\frac{1}{\sqrt{2}}=\frac{\sqrt{2}}{\sqrt{2} \cdot \sqrt{2}}=\frac{1}{2} \cdot \sqrt{2} \)
We have \(\frac{1}{2}\) is a rational but ?2 is irrational. So, the product of a rational and an irrational is irrational.
Hence, \(\frac{1}{\sqrt{2}}\) = = \(\frac{1}{2} \cdot \sqrt{2}\) is irrational.

Question 10.

(3 + √5) is:

(A) an integer
(B) a rational number
(C) an irrational number
(D) none of these
Answer:
(C) an irrational number

Explanation:
Here 3 is a rational and √5 is an irrational.
?The sum (3 + √5) i.e., rational and irrational is irrational.Hence (3 + √5) is an irrational number.

Question 11.

The number 1.732 is:

(A) an irrational number
(B) a rational number
(C) an integer
(D) a whole number
Answer:
(B) a rational number

Explanation:
We have \(1.732=\frac{1732}{1000}=\frac{433}{250}\) Which is a rational number.

Question 12.

2.1311 3111 311113…………is

(A) an integer
(B) a rational number
(C) an irrational number
(D) none of these.
Answer:
(C) an irrational number

Explanation:
Given number is non-terminating, non-repeating decimal, So, it is an irrational number.

Question 13.

Which of the following rational numbers is expressible as a terminating decimal?

\(\text { (A) } \frac{2027}{625}\)
\(\text { (B) } \frac{1625}{462}\)
\(\text { (C) } \frac{131}{35}\)
\(\text { (D) } \frac{124}{165}\)
Answer:
\(\text { (A) } \frac{2027}{625}\)

Explanation:
Given,\(\frac{2027}{625}=\frac{2027}{5 \times 5 \times 5 \times 5} \times \frac{2^{4}}{2^{4}}\)
\(=\frac{2027 \times 2^{4}}{5^{4} \times 2^{4}}=\frac{32,432}{10^{4}}\)
=3.2432
Thus, it is expressible as a terminating decimal.

Question 14.

The decimal expansion of the sum of rational numbers\(\frac{15}{4}\) and\(\frac{5}{40}\) will terminate after.

(A) one decimal place
(B) two decimal places
(C) three decimal places
(D) four decimal places
Answer:
(C) three decimal places

Explanation:
The sum of rational numbers
\(\begin{aligned} &=\frac{15}{4}+\frac{5}{40} \\
&=\frac{15 \times 25}{4 \times 25}+\frac{5 \times 25}{40 \times 25} \\
&=\frac{375}{100}+\frac{125}{1000}
\end{aligned}\)
= 3.75 + 0.125 = 3.875.
So, it will terminate after 3 decimal places.

Assertion and Reason Based MCQs

Question 1.

Assertion (A): (7 × 13 × 11) + 11 and (7 × 6 × 5 × 4 × 3 × 2 × 1) + 3 have exactly composite numbers.
Reason (R): (3 × 12 × 101) + 4 is not a composite number.

Answer:
(C) A is true but R is false

Explanation:
firstly consider the assertion, Since (7 × 13 × 11) + 11 = 11 × (7 × 13 + 1)
= 11× (91 + 1)
=11×92 ⇒11 × 2 × 2 × 23 and (7 × 6 × 5 × 4 × 3 × 2 × l) + 3
= 3(7 x 6 x 5 x 4 x 2 x l + l)
= 3 x (1681) ⇒ 3 × 41 × 41 Given numbers have more than two prime factors. So, both the numbers are composite. Hence, assertion is correct.
Now let us consider the reason:
3× 12× 101 + 4 = 4(3 × 3 × 101 + 1)
= 4(909 + 1)
= 4(910)
= 2 × 2 × 2 × 5 × 7 × 13 = a composite number
[∴ Product of more than two prime factors] Thus, reason is not correct. Thus, assertion is correct but reason is incorrect.

Question 2.

Assertion (A): If HCF (336,54) = 6, then LCM (336,54) = 3000.
Reason (R): The sum of exponents of prime factors in the prime factorisation of 196 is 4.

Answer:
(D) A is false and R is True

Explanation:
Let us consider the assertion,
∴ HCF × LCM = Product of numbers
∴ 6 x LCM = 336 x 54

⇒ LCM = \(\frac{336 \times 54}{6}\)

= 3024
Thus, the assertion is incorrect:
Now, let us consider the reason:
Prime factors of 196 = 2² x 7²
∴ The sum of exponents of prime factors = 2 + 2 = 4.
So, the reason is correct: Thus, assertion is incorrect but reason is correct.

Question 3.

Assertion (A): HCF of two or more numbers = Product of the smallest power of each common prime factor, involved in the numbers.
Reason (R): The HCF of 12,21 and 15 is 3.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
Let a, a² and a2 be three numbers, then we have the smallest power of a¹, a² and a³ is 1. So, HCF is a. Now, let us consider the reason:
Prime factors of 12 = 22 × 3
Prime factors of 21 =3×7
Prime factors of 15 =3×5
?HCF of 12,21 and 15 = 3, which is a common prime factor. Thus both assertion and reason are correct and reason is the correct explanation for assertion.

Question 4.

Assertion (A): The product of two consecutive positive integers is divisible by 2.
Reason (R): 13233343563715 is a composite number.

Answer:
(B) Both A and R are true but R is NOT the correct explanation of A

Explanation:
In case of assertion. Since, in the product of two consecutive positive integers, p = n(n +1), one of n or (n + 1) is an even number. Hence, the product of two consecutive positive integers is divisible by 2. So, it is correct. Now, let us consider the reason: Since, the given number ends in 5. It is a multiple of 5. Therefore, it is a composite number. Thus, both assertion and reason are correct and reason is not the correct explanation for assertion.

Question 5.

Assertion (A): The decimal expansion of assertion: \(\frac{15}{16000}\) is 0.09375
Reason (R): The decimal expansion of \(\frac{23}{2^{3} 5^{2}}\)

Answer:
(D) A is false and R is True

Explanation:
In case of assertion:
\(\frac{15}{1600}\) = \(\begin{aligned}
&\frac{15}{2^{4} \times 100} \\ &\frac{15 \times 5^{4}}{2^{4} \times 5^{4} \times 100} \\ &\frac{9375}{(2 \times 5)^{4} \times 100} \\ &\frac{9375}{1000000}=0.009375
\end{aligned}\)

So, assertion is incorrect: Now, in case of Reason
\(\frac{23}{2^{3} 5^{2}}\) = \(\begin{aligned} &\frac{23 \times 5}{2^{3} \times 5^{2} \times 5} \\ &\frac{115}{2^{3} \times5^{3}}=\frac{115}{(2 \times 5)^{3}} \\
&\frac{115}{1000}=0.115
\end{aligned}\)
So, reason is correct. Thus, asset tion incorrect but reason is correct.

Question 6.

Assertion (A): The decimal expansion of the rational number \(\frac{57}{2^{2} \times 5}\) will terminate after 2 decimal places. 2 x 5
Reason (R): The decimal expansion of the rational number \(\frac{13}{3125}\)will terminate after 3 decimal places.

Answer:
(C) A is true but R is false

Explanation:
In case of assertion:
\(\frac{57}{2^{2} \times 5}\)
\(=\frac{57 \times 5}{2^{2} \times 5^{2}}\)
\(=\frac{285}{(2 \times 5)^{2}}\)
\(=\frac{285}{100}\)
So, U will terminate after 2 decimal places.
∴ Assertion is correct.
In case of Reason:
\(\frac{13}{3125}=\frac{13}{5^{5}}\)
[∴ prim factor of 3125 = 5 × 5 × 5 × 5]
\(=\frac{13 \times 2^{5}}{5^{5} \times 2^{5}}\)
\(=\frac{416}{(5 \times 2)^{5}}=\frac{416}{100000}\)
= 0.00416.
So. it will terminate after 5 decimal places.
∴Reason is incorrect.
Thus, assertion is correct but reason is incorrect.

Case -Based MCQs

Attempt any four sub-parts from each question. Each sub-part carries 1 mark.
I. Read the following text and answer the following questions on the basis of the same:
To enhance the reading skills of grade X students, the school nominates you and two of your friends to set up a class library. There are two sections- section A and section B of grade X. There are 32 students in section A and 36 students in section B.

Question 1.

What is the minimum number of books you will acquire for the class library, so that they can be distributed equally among students of Section A or Section B?

(A) 144
(B) 128
(C) 288
(D) 272
Answer:
(C) 288

Explanation:
We have to find the LCM of 32 and 36.
LCM(32, 36) = 2⁵ × 9 = 288
Hence, the minimum number of books required to distribute equally among students of section A and section B are 288.

Question 2.

If the product of two positive integers is equal to the product of their HCF and LCM is true then, the HCF (32,36) is

(A) 2
(B) 4
(C) 6
(D) 8
Answer:
(B) 4

Question 3.
36 can be expressed as a product of its primes as

(A) 2² × 3²
(B) 2¹ × 3⁵
(C) 2³ ×3¹
(D) 2° x 3°
Answer:
(A) 22 x 32

Question 4.

7 ×11× 13× 15 + 15 is a

(A) Prime number
(B) Composite number
(C) Neither prime nor composite
(D) None of the above
Answer:
(B) Composite number

Question 5.

If p and q are positive integers such that p = ab² and q = a²b, where a, b are prime numbers, then the LCM (p, q) is

(A) ab
(B) a²b²
(C) a³b²
(D)a³b³
Answer:
(D)a³b³

Explanation: Given,p = ab² = a × b×b
q = a²b= a×a×b
LCM of (p, q) =a²b²

II. Read the following text and answer the following questions on the basis of the same: A seminar is being conducted by an Educational Organisation, where the participants will be educators of different subjects. The number of participants in Hindi, English and Mathematics are 60,84 and 108 respectively.

Question 1.

In each room the same number of participants are to be seated and all of them being in the same subject, hence maximum number participants that can accommodated in each room are

(A) 14
(B) 12
(C) 16
(D) 18
Answer:
(B) 12

Explanation:
No. of participants seated in each room would be HCF of all the three values above.
60 = 2 × 2 × 3 × 5
84 = 2 × 2 × 3 × 7
108 = 2 × 2 × 3 × 3 × 3
Hence, HCF = 12.

Question 2.

What is the minimum number of rooms required during the event?

(A) 11
(B) 31
(C) 41
(D) 21
Answer:
(D) 21

Explanation:
Minimum no. of rooms required are total number of students divided by number of students in each robin.
No. of rooms \(\begin{aligned} &=\frac{60+84+108}{12} \\ &=21 \end{aligned}\)

Question 3.

The LCM of 60, 84 and 108 is

(A) 3780
(B) 3680
(C) 4780
(D) 4680
Answer:
(A) 3780

Question 4.

The product of HCF and LCM of 60,84 and 108 is

(A) 55360
(B) 35360
(C) 45500
(D) 45360
Answer:
(D) 45360

Question 5.

108 can be expressed as a product of its primes as

(A) 2³ × 3²
(B) 2³ × 3³
(C) 2² × 3²
(D) 2² × 3²
Answer:
(D) 2² × 3²

III. Read the following text and answer the following questions on the basis of the same: A garden consists of 135 rose plants planted in certain number of columns. There are another set of 225 marigold plants, which is to be planted in the same number of columns.

Read carefully the above paragraph and answer the following questions:

Question 1.

What is the maximum number of columns in which they can be planted?

(A) 45
(B) 40
(C) 15
(D) 35
Answer:
(A) 45

Explanationi:
No. of rose plants = 135
No. of marigold plants =225
The maximum number of columns in which they can be planted = HCF of 135 and 225
∴ Prime factors of 135 = 3 x 3 x 3 x 5 and 225 = 3 × 3 × 5 × 5
∴ Prime factors of 135 = 3 x 3 x 5 = 45.

Question 2.

Find the total number of plants

(A) 135
(B) 225
(C) 360
(D) 45
Answer:
(C) 360

Explanation:
Total number of plants 135 + 225 = 360 plants

Question 3.

Find the sum of exponents of the prime factors of the maximum number of columns in which they can be planted.

(A) 5
(B) 3
(C) 4
(D) 6
Answer:
(B) 3

Explanation:
We have proved that the maximum number of columns = 45
So, prime factors of 45 = 3 × 3 × 5
= 3² × 5¹
?Sum of exponents =2 + 1 = 3

Question 4.

What is total numbers of row in which they can be planted

(A) 3
(B) 5
(C) 8
(D) 15
Answer:
(C) 8

Explanation:
Number of rows of Rose plants \(=\frac{135}{45}=3\)
Number of rows of marigold plants = \(=\frac{225}{45}=5\)
Total numbers of rows = 3 + 5 = 8

Question 5.

Find the sum of exponents of the prime factors of total number of plants

(A) 2
(B) 3
(C) 5
(D) 6
Answer:
(D) 6

Explanation:
Total number of plants = 135 + 225 =360
The prime factors of 360 = 2 × 2 × 2 × 3 × 3 × 5
= 2³× 3²× 5¹
Sum of exponents = 3 + 2 + 1 = 6.

IV Read the following text and answer the following questions on the basis of the same: A Mathematics Exhibition is being conducted in your School and one of your friends is making a model of a factor tree. He has some difficulty and asks for your help in completing a quiz for the audience.
ig4
Question 1.

What will be the value of x?

(A) 15005
(B) 13915
(C) 56920
(D) 17429
Answer:
(B) 13915

Explanation:
x = 2783 × 5
x = 13915

Question 2.

What will be the value of y?

(A) 23
(B) 22
(C) 11
(D) 19
Answer:
(C) 11

Explanation:
2783 = y ×253
\(\begin{aligned} &y=\frac{2783}{253} \\ &y=11 \end{aligned}\)

Question 3.

What will be the value of z?

(A) 22
(B) 23
(C) 17
(D) 19
Answer:
(B) 23

Explanation: 253 = 11 x z
\(\begin{aligned} &z=\frac{253}{11} \\ &z=23 \end{aligned}\)

Sum of exponents = 3 + 2 + 1 = 6.

IV Read the following text and answer the following questions on the basis of the same:
A Mathematics Exhibition is being conducted in your School and one of your friends is making a model of a factor tree. He has some difficulty and asks for your help in completing a quiz for the audience.

Question 1.

What will be the value of x?

(A) 15005
(B) 13915
(C) 56920
(D) 17429
Answer:
(B) 13915

Explanation:
x = 2783 × 5
x = 13915

Question 2.

What will be the value of y?

(A) 23
(B) 22
(C) 11
(D) 19
Answer:
(C) 11

Explanation:
2783 = y × 253
\(\begin{aligned} &y=\frac{2783}{253} \\ &y=11 \end{aligned}\)

Question 3.

What will be the value of z?

(A) 22
(B) 23
(C) 17
(D) 19
Answer:
(B) 23

Explanation:
253 = 11 × z
\(\begin{aligned} &z=\frac{253}{11} \\ &z=23 \end{aligned}\)

Question 4.

According to Fundamental Theorem of Arithmetic 13915 is a

(A) Composite number
(B) Prime number
(C) Neither prime nor composite
(D) Even number
Answer:
(A) Composite number

Question 5.

The prime factorisation of 13915 is

(A) 5 ×11³ × 13,²
(B) 5 × 11³ × 23²
(C) 5 × 11² × 23
(D) 5 × 11² × 23²
Answer:
(C) 5 × 11² × 23

MCQ Questions for Class 10 Maths with Answers

MCQ Questions for Class 10 Maths Chapter 1 Real Numbers Read More »

MCQ Questions for Class 10 Computer Applications Chapter 8 Cyber Ethics

MCQ Questions / Prasanna

Cyber Ethics Class 10 MCQ Questions with Answers

Question 1

Intellectual property is an :

(A) Industrial property
(B) Copyright property
(C) Free property
(D) Both (A) and (B)
Answer:
(D) Both (A) and (B)

Explanation:
Intellectual Property Rights are the rights given to the persons over the creation of their mind. Intellectual property rights reward creativity and human endeavor, which fuel the progress of humankind. The purpose of Intellectual property right is the giving of copyright to the creator of created idea, product, etc.

Question 2.

Trojan Horse is a

(A) Virus
(B) Worm
(C) Spyware
(D) Adware
Answer:
(A) Virus

Explanation:
Trojan horse is a program or file that a user allows or invites onto his or her system, believing that the program or file is normal software, benign, and compliant.

Question 3.

Which of the following is a type of plagiarisim?

(A) Partial
(B) Collusion
(C) Self
(D) All of these
Answer:
(D) All of these

Explanation:
The word plagiarism comes from the Latin word for kidnapping. You know that kidnapping is called as abducting a person. In the same way, lagiarism is called as stealing a person’s ideas and writing. In Plagiarism, you steal author’s ideas, experience, thought, language, etc.

Question 4.

Using someone else’s twitter handle to post something will be termed as :

(A) Fraud
(B) Identity theft
(C) Online stealing
(D) Violation
Answer:
(B) Identity theft

Explanation:
Identity theft is the crime of obtaining the personal or financial information of another person to use their identity to commit fraud, such as making unauthorized transactions or purchases.

Question 5.

E-Commerce means :

(A) Doing business online via the Internet
(B) Doing business off-line
(C) studying commerce via electronic media
(D) None of these
Answer:
(A) Doing business online via the Internet

Explanation:
E-commerce means buying and selling of goods online.

Question 6.

Fraud is :

(A) cheating others
(B) an intentionally false representation of a fact
(C) to deceive another party in order to obtain a profit
(D) All of these
Answer:
(B) an intentionally false representation of a fact

Explanation:
One who is online may open up the possibility for hackers to commit fraud and launch spam and virus attacks.

Question 7.

Intellectual property does not include :

(A) Creation of mind
(B) Artistic work
(C) Literary
(D) None of these
Answer:
(D) None of these

Explanation:
Intellectual property right are the rights for the creations of human intellect including inventions; literary and artistic works; and symbols, names and images etc.

Question 8.

A…………is defined as an exclusive right granted for an invention.

(A) Patent
(B) Copyright
(C) Trademark protection
(D) Design protection
Answer:
(A) Patent

Explanation:
Patent provides protection for novel technical solutions to problems. A patent provides patent owners with protection for their inventions. Patent applications are ‘ published after 18 months. A patent applies for a maximum of 20 years.

Assertion and Reason Based MCQs

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is Not the correct explanation of A
(C) A is true and R is false
(D) A is false and R is true

Question 1.

Assertion (A): Digital rights are the process of relationship between copyrighted digital works and user permissions and rights related to computers, networks and electronic devices.
Reason (R): Certain digital right/digital rights management (DRM) subcategories are of growing concern such as information/Internet privacy and freedom of information.

Answer:
(B) Both A and R are true but R is Not the correct explanation of A

Explanation:
Digital rights are defined as the process of accessing and controlling of digital information. Digital rights advocacy groups include:
(A) Entertainment Consumers Association (ECA): It is a U.S based non-profit organization that is dedicated to the interests of computer and video game players in the U.S. and Canada.
(B) Free Software Foundation (FSF): It is a Non profit organization and supports the free software movement.
(C) Electronic Frontier Foundation (EFF): It is an International non-profit organization that oversees digital rights advocacy and legal affairs.
(D) Digital Rights Ireland (DRI): It works for civil liberties related to digital rights.
(E) European Digital Rights (EDRi): It is focused on copyright, security, privacy and freedom of expression.

(F) Open Rights Group (ORG): It is focused on controlling issues like censorship, knowledge access, privacy, freedom of information and electronic voting.

Question 2.

Assertion (A): Freedom of information is used to access information of a citizen’s right that is held by the state.
Reason (R): In some countries, this freedom is supported as a constitutional right.

Answer:
(B) Free Software Foundation (FSF): It is a Non profit organization and supports the free software movement.

Explanation:
Freedom of information is defined as the citizen rights to be informed in writing if a governmental agency holds certain information and to request its disclosure. It was recognized for transparency, government accountability, education and general public protection against mismanagement and corruption. More than 70 countries with government representation approved the original freedom of information legislation. Related human rights contain freedom of expression, data protection (privacy), freedom of association and right to development.

Question 3.

Assertion (A): Digital Divide includes the imbalance both in physical access to technology and the resources and skills needed to effectively participate as a digital citizen.
Reason (R): The term global digital divide refers to similarities in access between countries in regards to the Internet and its means of information flow.

Answer:
(C) A is true and R is false

Explanation:
Digital Divide refers to the gap between individuals, households, businesses and geographic areas at different socio-economic levels with regard both to their opportunities to access Information and Communications Technologies (ICT’s) and to their use of the Internet for a wide variety of activities.

Question 4.

Assertion (A): E-commerce security is defined as a set of protocols that safely guide ecommerce transactions.
Reason (R): Security is an important part of any transaction that takes place over the internet.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
Most ecommerce merchants leave the mechanics to their hosting company or IT staff, but it helps to understand the basic principles. Any system has to meet four requirements:

Privacy: Information must be kept from unauthorized parties.
Integrity: Message must not be altered or tampered with.
Authentication: Sender and recipient must prove their identities to each other.
Nonrepudiation: Proof is needed that the message was indeed received.

Question 5.

Assertion (A): Digital signature is an e-signature that is valid through encryption.
Reason (R): Digital signatures does not meet the need for authentication and integrity.

Answer:
(C) A is true and R is false

Explanation:
Digital signature is a process that verify the authenticity of the message (i.e. the message has not been altered by someone.)

Question 6.

Assertion (A): Credit card details can be safely sent with SSL(Secure Socket Layer), but then also it is not save.
Reason (R): Once the details are stored on the server they are vulnerable to outsiders hacking into the server and accompanying network.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
SSL uses PKI(Public Key Infrastructure) and digital certificates to ensure privacy and authentication. The procedure is something like this: the client sends a message to the server, which replies with a digital certificate. Using PKI, server and client negotiate to create session keys, which are symmetrical secret keys specially created for that particular transmission. Once the session keys are agreed upon communication continues with these session keys and the digital certificates.\

Case- Based MCQs

Attempt any ? sub-parts from each question. Each sub-part carries 1 mark.
I. Secure Data Transmission Secure data transmission means that data/ information is not being received or modified by an unauthorized person, over a network, from source to destination. For secure data transmission, we can convert an actual message (which is in readable form) into an unreadable message (called an encrypted message) with the help of the concept of encryption. This unreadable message is sent through the network to the destination. If a hacker tries to read this message, he/she receives an unreadable message that cannot be easily converted into the actual message. The unreadable message can be converted to the original message by the receiver at the destination. Caesar Cipher is one of the common encryption techniques. In this technique, each letter of the word is replaced by a letter some fixed number of positions (usually called as key) down the alphabet. For example, if the key is 3, each ‘A’ will be replaced by ‘D’ (Letter ‘D’ is 3 positions down Letter ‘A’ in the alphabet), each ‘B’ will be replaced by ‘E’ and similarly, each ‘Z’ will be replaced by ‘C’. The receiver can identify the original message by using the reverse technique of encryption. This reverse technique is called decryption.

Question 1.

Secure data transmission means :

(A) Data can be accessed by any unauthorized person during transmission.
(B) Data can not be accessed by any unauthorized person during transmission.
(C) Transmission of data
(D) None of the above
Answer:
(B) Data can not be accessed by any unauthorized person during transmission.

Explanation:
The transmitted data cannot be accessed or modified by an unauthenticatcd person.

Question 2.

Which of the following techniques can be used for security of data ?

(A) Authentication
(B) Authorisation
(C) Encryption
(D) All of the Above
Answer:
(D) All of the Above

Explanation:
Authentication: Sender and recipient must prove their identities to each other.
Authorisation: A particular sender/receiver having the authority to send/receive messages. Encryption: Encoding the message in order to send to the receiver.

Question 3.

Caesar Cipher is :

(A) used for conversion of the actual message into an encrypted message
(B) an encryption technique
(C) both (A) and (B)
(D) None of the above
Answer:
(C) both (A) and (B)

Explanation:
The Caesar Cipher technique is one of the earliest and simplest method of encryption technique. It’s simply a type of substitution cipher, i.e., each letter of a given text is replaced by a letter some fixed number of positions down the alphabet. For example with a shift of 1, A would be replaced by B,
B would become C, and so on. The method is apparently named after Julius Caesar, who apparently used it to communicate with his officials.

Question 4.

Person ‘X1 has received an encrypted message and wants to convert this message into the actual message (message before encryption). The technique he should use is called :

(A) Conversion
(B) Encryption
(C) Decryption
(D) None of the above
Answer:
(C) Decryption

Explanation:
Decryption is the technique to decode the encrypted message.

Question 5.

A sender wants to send a message having the text as ‘COMPUTER’ to a receiver using 4 as the key. What will be the encrypted message?

(A) GSQTZXIV
(B) GSQTYXIV
(C) GSXTYXIV
(D) GSQSYXIV
Answer:
(B) GSQTYXIV

Question 6.

An encryption algorithm is used to transform a readable message into:

(A) Text message
(B) Simple message
(C) Converted message
(D) Encrypted message
Answer:
(D) Encrypted message

Explanation:
Encrypted message is the message that is formed by using the encryption technique.

Question 7.

In Ceaser Cipher, for which of the following values of key, the encrypted message will be the same as original message.

(A) 0
(B) 26
(C) both (A) and (B)
(D) None of the above
Answer:
(C) both (A) and (B)

Explanation:
For both 0 and 26 the key will be same for the encrypted message, using the Caesar Cipher technique.

II. Cyber Ethics
Understanding the importance of cyber ethics in daily life has become essential than ever before. Similarly, it is crucial to know how to tackle the situation if you or your kid is being victimized. It is especially hard to talk to teens because they do not want to be lectured about what is right and wrong. They seem to think they have it all sorts out. That is why it is important to instil appropriate cyber etiquette at an early age but if you haven’t there is still time to tell to your child. Cyber ethics concerns to the code of responsible behaviour on the Internet. Just as we are taught to act responsibly in our everyday life. The responsible behaviour on the internet in many ways aligns with all the right behaviour in everyday life, but the results can be significantly different. Some people try to hide behind a false sense of obscurity on the internet, believing that it does not matter if they behave badly online because no one knows who they are or how to search them. That is not all the time true; browsers, computers and internet service providers may keep logs of their activities which can be used to spot illegal or inappropriate behaviour. The Government has taken a positive role in making resources for parents and children to learn about cyber ethics. This is a growing problem and without parents and teachers using the resources available nothing can be done to prepare future generations of internet users from being safe online.

Question 1.

What type of behaviour on the Internet does Cyber Ethics concern?

(A) Active
(B) Responsible
(C) Emotional
(D) Exploratory
Answer:
(B) Responsible

Explanation:
While online, one should follow responsible behaviour. Protecting yourself while online means identifying and taking preventive measures against a number of security and privacy issues.

Question 2.

Who positive role in making resources for parents and children to learn about cyber ethics?

(A) Children
(B) Parents
(C) W3C
(D) Government
Answer:
(D) Government

Explanation:
Government takes preventive measures so that a person while online does not faces any problem.

Question 3.

Some people try to hide behind a sense of obscurity on the internet.

(A) False
(B) True
(C) Either (A) or (B)
(D) None of the above
Answer:
(A) False

Explanation:
Some people try to hide behind a false sense of obscurity on the internet, believing that it does not matter if they behave badly online because no one knows who they are or how to search them. That is not all the time true; browsers, computers and internet service providers may keep logs of their activities which can be used to spot illegal or inappropriate behavior.

Question 4.

Why it is crucial to know how to tackle the situation if your kid is being victimized?

(A) Because they don’t have deep knowledge about it
(B) Because they are afraid to be penalized
(C) Because they do not want to be lectured about what is right and wrong
(D) None of the above
Answer:
(C) Because they do not want to be lectured about what is right and wrong

Explanation:
Parents should guide/guard their children while they are online. Parents should refrain their children to abuse others while online.

Question 5.

Why it is important to instil appropriate cyber etiquette at an early age?

(A) Because of increasing Internet usage worldwide decreases user data privacy
(B) Because of weak firewall and antiviruses protection
(C) Because of people’s insecurities
(D) All of the above
Answer:
(D) All of the above

Explanation:
Cyber etiquettes were recognized for transparency, government accountability, education and general public protection against mismanagement and corruption.

Question 6.

How to prepare future generations of internet users from being safe online?

(A) By instilling appropriate cyber etiquette at an early age
(B) with parents and children using the resources available to learn about cyber ethics
(C) By concerning to the code of responsible behaviour on the Internet
(D) All of the above
Answer:
(D) All of the above

Explanation:
Parents should guide their children to be responsible while using internet. Tell them not to abuse anyone, not to click on any link which can be suspicious.

Question 7.

Why is it important for browsers, computers and internet service providers to keep logs of people’s activities?

(A) So the people can remember what they have searched on the Internet
(B) So the servers can remember who have accessed the stored data
(C) To spot people’s illegal or inappropriate behaviour
(D) None of the above
Answer:
(C) To spot people’s illegal or inappropriate behaviour

Explanation:
It very important to keep track of their users, their activities, their search topic, etc. If any doubt is their about someone’s online behaviour, the ISPs or search engines can inform the authority regarding the same.

III. Plagiarism
Plagiarism is presenting someone else’s work or ideas as your own, with or without their consent, by incorporating it into your work without full acknowledgement. All published and unpublished material, whether in manuscript, printed or electronic form, is covered under this definition. Plagiarism may be intentional or reckless, or unintentional. Under the regulations for examinations, intentional or reckless plagiarism is a disciplinary offence. Considering the pattern, plagiarism can be of different types. They are : Direct Plagiarism, Mosaic Plagiarism, Accidental Plagiarism, Self-Plagiarism and Paraphrasing Plagiarism. Self-plagiarism and mosaic plagiarism are the two most common forms of plagiarism.

Question 1.

………. is presenting someone else’s as your own.

(A) Plagiarism
(B) Hacking
(C) Cracking
(D) All of these
Answer:
(A) Plagiarism

Explanation:
The word plagiarism comes from the Latin word for kidnapping. Plagiarism is called as stealing a person’s ideas and writing. In Plagiarism, you steal author’s ideas, experience, thought, language, etc.

Question 2.

Which types of work are covered in plagiarism?

(A) Published
(B) Unpublished
(C) Manuscript
(D) All of these
Answer:
(D) All of these

Explanation:
Plagiarism occurs when you use other’s words, ideas, data, or figures and do not acknowledge that you have done so. If you use the words, ideas, or phrasing of another person or from published material, ‘ you must

Use quotation marks around the words and cite the source, or
Paraphrase or summarize acceptably and Cite the source.

Question 3.

Plagiarism may be………..

(A) Intentional
(B) Reckless
(C) Noncontractile
(D) Any of these
Answer:
(D) Any of these

Explanation:
Plagiarism can be intentional, reckness and uncontractile. Plagiarism may have become a habit of students due to online learning.

Question 4.

Which of the following is/are most common form(s) of plagiarism?

(A) Self plagiarism
(B) Mosaic plagiarism
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
Self-plagiarism: It is commonly described as recycling or reusing one’s own specific words from previously published texts. Mosaic plagiarism: It is a combination of both direct and paraphrase plagiarism. It involves incorporating various words, phrases, and sentences into your essay without providing quotation marks or attributions.

Question 5.

Plagiarism is a/an offence.

(A) Criminal
(B) Technology
(C) Technical
(D) Disciplinary
Answer:
(D) Disciplinary

Explanation:
Plagiarism is the practice of using someone else’s work and pretending that it is your own. In other words, plagiarism is an act of fraud.
It involves both stealing someone else’s work and lying about it afterward. It is a disciplinary action not a crime.

Question 6.

Which of the following is not a type of plagiarism?

(A) Direct plagiarism
(B) Mosaic plagiarism
(C) Accidental plagiarism
(D) Indirect plagiarism
Answer:
(D) Indirect plagiarism

Explanation:
Direct Plagiarism: It is the act of copying other person’s work word to word without changing a single word. Paraphrase plagiarism: It involves making a few changes to someone else’s work, then passing it off as your own. Accidental plagiarism: It occurs when citations are missing or sources are cited incorrectly.

Question 7.

What factor could be included for plagiarism?

(A) Having knowledge
(B) Competition
(C) Hard working
(D) Management skills
Answer:
(B) Competition

Explanation:
To avoid plagiarism, you should follow some rules:

Instead of copying the language of the book as it is, try to put it in your own language/ words.
One should have a clear understanding of Plagiarism.
If copying someone else’s work is your task, word to word, then do not forget enclosing it in quotes and also mention its source.
If you are not sure that you are documenting your sources correctly (whether by using parenthetical references or a fully formatted bibliography), ask your instructor.

MCQ Questions for Class 10 Computer Applications with Answers

MCQ Questions for Class 10 Computer Applications Chapter 8 Cyber Ethics Read More »

MCQ Questions for Class 10 Computer Applications Chapter 6 HTML Advanced-Tables, Lists and Links

MCQ Questions / Prasanna

HTML Advanced-Tables, Lists and Links Class 10 MCQ Questions with Answers

Question 1.

In <OL> and <UL>, the style of bullet or number is defined by:

(A) type attribute
(B) style attribute
(C) both (A) and (B)
(D) None of the these
Answer:
(A) type attribute

Explanation:
The type attribute of <OL> and <UL> tags is used to define the type of bulleted and numbered list required by the user,

Question 2.

Which of the following will produce a solid circle bullet when given as a type for <UL>?

(A) circle
(B) square
(C) disc
(D) none of these
Answer:
(C) disc

Explanation:
The syntax <UL type=”disc”> will display a bulleted list with disc.

Question 3.

A …….. can be inserted in HTML document which can act as a container for all the input elements.

(A) Text field
(B) Text area
(C) Form
(D) Command Button
Answer:
(C) Form

Explanation:
HTML Form is a document which stores information of a user on a web server using interactive controls.

Question 4.

………. method is used to sent form data as URL variables.

(A) Get
(B) Set
(C) Post
(D) None of these
Answer:
(A) Get

Explanation:
Some other features of GET requests are: GET requests can be cached. GET request remains in the browser history.

Question 5.

…………… method is used to sent form data as HTTP Post.

(A) Get
(B) Set
(C) Post
(D) None of these
Answer:
(C) Post
Explanation:
Some features of POST requests are:

POST requests are never cached.
POST requests do not remain in the browser history.

Question 6.

What is the purpose of a web form ?

(A) An outdated feature still used to help the page load faster
(B) An useful way to send information from the user directly to the search engines
(C) A way to input data into a website or an application
(D) To enable the user to navigate the website with ease
Answer:
(C) A way to input data into a website or an application

Explanation:
Web Forms are pages that your users request using their browser.

Question 7.

Which element allows for the creation of groups of options in a select menu?

(A) <select>
(B) < group >
(C) < option >
(D) <optgroup>
Answer:
(C) < option >

Explanation:
The <OPTION> tag specifies an option in a selection list. < OPTION > tag is used inside a SELECTION tag.

Question 8.

Which option will be selected with the following code snippet?

<select>
<option selected value=”Fiat”>Fiat</option>
< option value=” selected” > Saab </option >
< option value=”opel” > Selected </option >
< option value=” audi” > Audi </option > </select>
(A) Fiat
(B) Saab
(C) Selected
(D) Audi
Answer:
(A) Fiat
Explanation:
The <SELECT> tag defines a selection list on an HTML FORM. A selection list displays alist of options from which the user can select an item. From a selection list, one or morethan one item can be selected at a time.

Question 9.

The attribute specifies the page which handles the input from the user.

(A) method
(B) frame
(C) action
(D) target
Answer:
(C) action

Explanation:
The ACTION attribute specifies where the information will be ‘ sent for processing. Information processing destinations can be CGI programs, JavaScript functions or an email address.

Assertion and Reason Based MCQs

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is Not the correct explanation of A
(C) A is true and R is false
(D) A is false and R is true

Question 1.

Assertion (A): An unordered list is a list in which there is no definite order to the items.
Reason (R): As, an unordered list of items are marked with bullets.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
An unordered list is a bulleted list of items. The tags for an unordered list are <UL> and </UL>. It is used to create unordered list or bulleted list, like to represent the list in the form of disc, square and circle. The data is defined under the <UL> tag, by using <LI> tag. Syntax <UL>…</UL>

Question 2.

Assertion (A): A definition list is not a list of items.
Reason (R): A definition list is a list of terms and explanation of the terms.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
A definition list has two pieces for each item, a term and a definition. Each definition-list term starts with the <Dy>tag. Each definition-list definition starts with the < DD>tag. It is used to create a list of definition terms.

Question 3.

Assertion (A): The SUBMIT or RESET buttons that sends all the collected information to the server or clears the form information respectively.
Reason (R): The information is then processed and give the output

Answer:
(B) Both A and R are true but R is Not the correct explanation of AOption (B) is correct.
Explanation:
The syntax to use SUBMIT is: <FORM> < INPUT type=”SUBMIT” value=”SUBMIT”> </FORM > Using the above statement, a form appears with a button named as SUBMIT.

Question 4.

Assertion (A): It is not possible to have a form inside a form.
Reason (R): A form cannot be nested.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
It is possible to add all kinds of HTML tags between the <FORM> and </ FORM> tags. This means that a form can easily include a table or an image along with the actual elements. The <FORM> tag cannot have another <FORM> tag inside it. A form cannot have a subform as it cannot be nested.

Question 5.

Assertion (A): The <FORM NAME=”Form Name”> specifies the name of the Form.
Reason (R): The form name is always displayed on the Form.

Answer:
(C) A is true and R is false

Explanation:
The name of the form is not displayed on the form. As the user can have more than one FORM tags in an HTML document, so to differentiate one Form from another, a name is required to be given. Name attribute is optional if only one <FORM> tag is used.

Question 6.

Assertion (A): Data cannot be encrypted in the form.
Reason (R): The ENCTYPE attribute specifies how the data is sent to the destination.

Answer:
(D) A is false and R is true
Explanation: The < FORM ENCTYPE=”PLAIN/ TEXT”> specifies how the data is sent to the destination. It encrypts the data and sends it as it is to the destination place.

Question 7.

Assertion (A): Data cannot be encrypted in the form.
Reason (R): The ENCTYPE attribute specifies how the data is sent to the destination.

Answer:
(D) A is false and R is true

Explanation:
The < FORM ENCTYPE=”PLAIN/ TEXT”> specifies how the data is sent to the destination. It encrypts the data and sends it as it is to the destination place.

Question 8.

Assertion (A): The <INPUT> tag is required when the user has to give some input/data.
Reason (R): The <INPUT> tag is not a compulsory tag used within the FORM tag.

Answer:
(C) A is true and R is false

Explanation:
The <INPUT> tag is required when the user has to give some input/data. This tag is always used within the FORM tag. Thus, INPUT tag defines a FORM element which. can receive user input. The TYPE attribute determines the specific sort of FORM element to be created i.e. this attribute specifies the type of input we want from the user. It can be used to create the following type of interface elements:

(A) BUTTON
(B) CHECKBOX
(C) RADIO
(D) TEXT
(E) SUBMIT and RESET
(F) IMAGE
(G) FILE
<INPUT TYPE=”BUTTON” >: This will place a button on an HTML form. information. These programs then manipulate the information, store data and send a feedback page to the viewer. To do so, a tag is available called as <FORM> tag.

Case- Based MCQs

Attempt any ? sub-parts from each question. Each sub-part carries 1 mark.
I. HTML Forms
Forms are one of the most powerful parts of a web page. In the structure of an HTML document, comes the basic tags like <HTML>, <HEAD> and <BODY>.HTML Forms are elements responsible for adding interactivity to web documents. Forms can be used to add to your web pages a guest book, order forms, surveys, get feedback, etc. A form allows you to gather information from a visitor or customer for immediate or for later use. The role of Forms is to gather different kinds of user input, i.e. fields to type in text, menus to select items from, radio buttons to choose items. The web browser accepts this information, and sends it directly to a web server, where a customized program is invoked to handle the form information. These programs then manipulate the information, store data and send a feedback page to the viewer. To do so, a tag is available called as <FORM> tag.

Question 1.

In the term HTML, what does M stands for?

(A) Markup
(B) Mashup
(C) Meaningful
(D) Most
Answer:
(A) Markup

Explanation:
HTML is a markup language used to build web pages and web applications. HTML is not a programming language, but rather a markup language.The major limitation of HTML is that it can create only static and plain pages so if you need dynamic pages then HTML is not useful.

Question 2.

……………. are the most powerful parts of a webpage.

(A) Links
(B) Forms
(C) Images
(D) Scripting
Answer:
(B) Forms

Explanation:
HTML Form is a document which stores information of a user on a web server using interactive controls. An HTML form contains different kind of information such as username, password, contact number, email id etc. In HTML, a form is a window that consists of the elements of a form called the form fields. These fields may be text field, text area, drop¬down box, radio buttons, checkbox and/or a command button.

Question 3.

Which of the following statements is/are True?

(A) Forms can be used to add to your web pages a guest book, order forms, surveys, get feedback, etc.
(B) Forms are elements responsible for adding interactivity to web documents.
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
When the form is displayed in a web browser, the user can make a choice and some text can be entered using the interface elements. This form made can finally be submitted to a destination point whenever required.

Question 4.

Which of the following tag is used to display the body of the webpage?

(A) <CSS>
(B) <HEAD>
(C) <BODY>
(D) < TITLE >
Answer:
(C) <BODY>

Explanation:
The <BODY> tag appears in between the <HTML> and </HTML> tags. It displays the text to be displayed on the web browser.

Question 5.

Which of the following defines the role of a form?

(A) Displaying various kind of information to the user
(B) Gather different kinds of user input
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
The for takes information from the user, processes it and then give the output to be displayed.

Question 6.

Which tag is used to create a form in a webpage?

(A) <FORM>
(B) < TITLE >
(C) <HEAD>
(D) None of these
Answer:
(A) <FORM>

Explanation:
The <FORM> tag tells the browser where a form starts and </FORM> denotes where the form ends. A <FORM> tag is thus a container element. Everything . contained between these opening and closing tags is a part of the form.

Question 7.

What are the different buttons that a form contains?

(A) Checkbox
(B) Radio button
(C) Post/Submit button
(D) All of these
Answer:
(D) All of these
Explanation:
The basic construction of an HTML Form includes:

The beginning and ending <FORM> tag.
The actual form elements where the visitor enters the information like text box, checkbox, radio buttons, etc.
The SUBMIT or RESET buttons that sends all the collected information to the server or clears the form information respectively

II. ORDERED LISTS
HTML ordered list or Numbered list displays elements in a numbered format. The HTML <OL> tag is used for creating ordered list. Ordered list can be used to represent items either in numerical order or alphabetical order format or in any format where an order is emphasized.The data item is defined under the <OL> tag by using <LI> tag. The <OL> consists of the Attributes START and TYPE.

Question 1.

HTML ordered list or Numbered list displays elements in a……… format.

(A) Numbered
(B) Bulleted
(C) Both (A) and (B)
(D) None of these
Answer:
(A) Numbered

Explanation:
Numbered list is an ordered list that is numbered as ‘1,11,111’, ‘a,b,c’, ‘i, ii, iii’.By default, an ordered list shows the item in the ascending order.

Question 2.

The HTML …….. tag is used for creating ordered list.

(A) <UL>
(B) <OL>
(C) Both (A) and (B)
(D) None of these
Answer:
(B) <OL>

Explanation:
An ordered list is a list where 1 the items in the list are held in some kind of sorted order. The <OL> tag is used to define I an ordered list. OL stands for Ordered List.

Question 3.

The attribute is used to specify the start of the ordered lists.

(A) Start
(B) St
(C) Face
(D) Size
Answer:
(A) Start

Explanation:
To clarify the use of START attribute view the example given below:
<HTML>
<HEAD>
< TITLE > START ATTRIBUTE </TITLE>
</HEAD>
<BODY>
<OL START=” 4 “>
<LI>Six</LI>
< LI > Seven </LI >
< LI > Eight </LI>
</BODY >
</HTML >

Question 4.

What does <LI> stands for?

(A) LIST ITEM
(B) LAST ITEM
(C) LONG ITEM
(D) LENGTH ITEM
Answer:
(A) LIST ITEM

Explanation:
Both ordered and unordered lists require start and end tags as well as the use of a special element to indicate where each list item begins (the <LI> tag).

Question 5.

Which of the following is not an attribute of <OL> tag?

(A) TYPE
(B) START
(C) BACKGROUND
(D) None of these
Answer:
(C) BACKGROUND

Explanation:
To understand the use of START and TYPE attributes, view the following example:
<HTML>
<HEAD>
< TITLE > START and TYPE ATTRIBUTES </ TITLE >
</HEAD>
<BODY>
<OL TYPE=” i” START=” 4 “>
<H2>MY FAVOURITE FRUITS: </H2>
<FONT FACE=”Monotype Corsiva” SIZE=”6″ COLOR=”Red” >
< LI > Apple </LI >
< LI > Strawberry </LI >
< LI> Blueberry </LI >
</FONT>
</OL>
</BODY>
</HTML>

Question 6.

Question 7.

Which of the following statement(s) is/are true?

(A) Lists create well-structured, accessible, easy- to-maintain documents.
(B) They provide individualized elements to which you can hook on CSS styles.
(C) Systematic lists help viewers to read your website.
(D)All of these
Answer:
(D)All of these

Explanation:
There are three main types of lists: unordered lists, ordered lists and definition lists. Ordered lists are numbered in some fashion, while unordered lists are bulleted. Definition lists consist of a term followed by its definition.

III. CHECKBOXES
<INPUT TYPE=”CHECKBOX” >: Checkboxes are used when the visitor can select multiple options from a set of alternatives. There can be more than one checkboxes from which the user can select one or more options. Note that every checkbox has a unique name. If there is no check in the box, clicking it will place a check mark (“X” orthere. If the box is checked, clicking it again will remove the mark. The value sent in the web form is the value of the checkbox if it was selected; otherwise the value will be empty. Adding the option CHECKED to a checkbox will make that checkbox highlight when the page loads.

Question 1.

Checkboxes are used when the visitor can select ………. options from a set of alternatives.

(A) One
(B) Multiple
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
The checkboxes are used where the user can select more than one or more than one options like ‘Number of languages known’, ‘Names of the cities visited’, etc.

Question 2.

What happen when the syntax of the code is: <INPUT TYPE = “CHECKBOX” CHECKED>?

(A) Will make that checkbox highlight when the page loads.
(B) The page will never be loaded.
(C) Will make that checkbox dormant when the page loads.
(D) None of these
Answer:
(A) Will make that checkbox highlight when the page loads.

Explanation:
That particular checkbox will be highlighted whose code is given as clNPUT TYPE=”CHECKBOX” CHECKED >, when that particular webpage will be loaded by the browser.

Question 3.

What is the meaning of the syntax of the code is: < INPUT TYPE=”CHECKBOX” Name= “Checkboxl” CHECKED >?

(A) That particular checkbox having the name ‘Checkbox’ will be highlighted, when that particular webpage will be loaded by the browser.
(B) That particular checkbox having the name ‘Checkboxl’ will be highlighted, when that particular webpage will be loaded by the browser.
(C) That particular checkbox having the name ‘Checkboxl’ will not be loaded by the web browser.
(D) There is an error in the syntax.
Answer:
(B) That particular checkbox having the name ‘Checkboxl’ will be highlighted, when that particular webpage will be loaded by the browser.

Explanation:
The Name attribute of <INPUT> tag specifies the name of the INPUT element. This attribute is required to differentiate between checkboxes. The name is not displayed on the form.

Question 4.

What is/are the difference between checkbox and radio button?

(A) Checkbox appears to be rectangular/square in shape whereas radio button appears to be round.
(B) Checkbox is used when multiple options can be selected whereas radio button is used only when one option can be selected.
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
Here, an example is given to show radio buttons on the form.
<HTML>
<HEAD>
<TITLE>Radio Button example</TITLE> c/HEAD >
<BODY>
<TIl>Please select the gender</Hl>
<FORM>
< INPUT TYPE=”RADIO” NAME=”R1″> MALE
<BR> .
< INPUT TYPE=”RADIO” NAME=”R2″> FEMALE
<BR>
< INPUT TYPE=”RADIO” NAME=”R3″> TRANS GENDER
<BRxBR>
< IN PUTTYPE=”SU BMIT” VALUE=”Submit” > </FORM>
</BODY >
</HTML>
After the above code is processed, three radio buttons will be displayed on the form.

Question 5.

Which tag is used to insert a checkbox on the form?

(A) < INPUT >
(B) <CHECKBOX>
(C) <TYPE>
(D) None of these
Answer:
(A) < INPUT >

Explanation:
The < INPUT > tag is required when the user has to give some input/data. This tag is always used within the FORM tag. Thus, INPUT tag defines a FORM element which can receive user input. The TYPE attribute determines the specific sort of FORM element to be created i.e. this attribute specifies the type of input we want from the user.

Question 6.

In which of the following checkboxes can be used?

(A) Names of countries visited
(B) Names of food items loved
(C) Names of languages known
(D) All of these
Answer:
(C) Names of languages known

Explanation:
Checkbox is used when multiple options can be selected.

Question 7.

Which tag should be there before the < INPUT > tag to designate a form?

(A) <FORM>
(B) < TABLE >
(C) <B>
(D) <HR>
Answer:
(A) <FORM>

Explanation:
The <FORM> tag tells the browser where a form starts and </FORM> denotes where the form ends. A <FORM> tag is thus a container element. Everything contained between these opening and closing tags is a part of the form.

MCQ Questions for Class 10 Computer Applications with Answers

MCQ Questions for Class 10 Computer Applications Chapter 6 HTML Advanced-Tables, Lists and Links Read More »

MCQ Questions for Class 10 Computer Applications Chapter 5 HTML Basics

MCQ Questions / Prasanna

HTML Basics Class 10 MCQ Questions with Answers

Question 1.

HTML is what type of language?

(A) Scripting Language
(B) Markup Language
(C) Programming Language
(D) Network Protocol
Answer:
(B) Markup Language

Explanation:
HTML is a markup language 1 used to build web pages and web applications.

Question 2.

Apart from <b> tag, what other tag makes text bold?

(A) <fat>
(B) <strong>
(C) <black>
(D) <emp>
Answer:
(B) <strong>

Explanation:
The HTML <strong> tag gives text a strong emphasis which traditionally means that the text is displayed as bold by the browser. This tag is also commonly referred to as the <strong> element.

Question 3.

How is a tag enclosed?

(A) ()
(B) <>
(C) []
(D) {>
Answer:
(B) <>

Explanation:
A tag is an HTML code that defines every structure on an HTML page. They also define the placement of text, images, links in an HTML document. HTML tags begins with “less-than” symbol (<) and end with “greater-than” symbol (>). These symbols are also called angular brackets. A start tag marks the beginning of a tag and its syntax is: <TAGNAME>. An end tag marks the end of a tag and its syntax is: </i’AGNAME>.

Question 4.

We can view the source code of html document in:

(A) Notepad
(B) PowerPoint
(C) Excel
(D) Paint
Answer:
(A) Notepad

Explanation:
Text editors are used by the users who have complete knowledge of HTML. The source code to create a web page are to be written in text editors. The two most commonly used text editors are Notepad and WordPad.

Question 5.

The value of #EFFFFFis .

(A) Green
(B) Black
(C) White
(D) Yeiiow
Answer:
(C) White

Explanation:
The RGB code for black is #000000 The RGB code for green is #008000 1 The RGB code for yellow is #FFFF0O

Question 6.

Which attribute does not come in <HR> tag?

(A) Size
(B) Color
(C) Width
(D) Length
Answer:
(D) Length

Explanation:
The short form of Horizontal Rule tag is <HR> tag. It draws a horizontal line through the part of the page to divide the page into two sections. The <HR> tag is an empty tag that creates a shaded horizontal rule (line) between text.

Question 7.

To display (x+y)², correct HTML code is

(A) <SUB> (X+Y)2</SUB>
(B) X+Y < SUP> 2 </SUP >
(C) (X+Y) <SUP> 2 </SUP>
(D) <SUP> (X+Y)2</SUP>
Answer:
(C) (X+Y) <SUP> 2 </SUP>

Explanation:
The <SUP> tag is used to display the text as superscript. The superscript text will appear half a character height above the other characters.

Question 8.

The………….. tag is used to display the text as subscript.

(A) <ins>
(B) <SUB>
(C) <em>
(D)<strong>
Answer:
(B) <SUB>

Explanation:
The subscript text will appear half a character height beneath the other characters.

Question 9.

……………. defines the largest heading.

(A) <H1>
(B) <H2>
(C) <H3>
(D) <H4>
Answer:
(A) <H1>

Explanation:
<H1> is the largest heading and <H6> is the smallest heading.

Question 10.

BACKGROUND is an attribute of:

(A) <BODY> tag
(B) <FONT> tag
(C) <IMG> tag
(D) <A> tag
Answer:
(A) <BODY> tag

Explanation:
The <body> element contains the entire content of a web page. This tag is also commonly referred to as the <body> element. It must be the second element inside of the parent <html> element, following only the <head> element.

Question 11.

Which of the following is not a browser?

(A) Microsoft Bing
(B) Netscape Navigator
(C) Mozilla Firefox
(D) Opera
Answer:
(A) Microsoft Bing

Explanation:
Microsoft Bing is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft’s previous search engines: MSN Search, Windows Live ‘ Search and later Live Search.

Question 12.

The tag contains the title of the document.

(A) HTML
(B) HEAD
(C) BODY
(D) < TITLE >
Answer:
(D) < TITLE >

Question 13.

The value of #0000FF is:

(A) Blue
(B) White
(C) Red
(D) none of the above
Answer:
(A) Blue

Explanation:
The RGB color code of white is #FFFFFF The RGB color code of red is

Assertion and Reason Based MCQs

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is Not the correct explanation of A
(C) A is true and R is false
(D) A is false and R is true

Question 1.

Assertion(A): The source code to create a web page are to be written in text editors.
Reason(R): Text editors are used by the users who have complete knowledge of HTML.

Answer:
(B) Both A and R are true but R is Not the correct explanation of A

Explanation:
In the text editors, the user who had the complete knowledge of HTML code used them. The two most commonly used text editors are Notepad and WordPad.

Question 2.

Assertion(A): The <!DOCTYPE> declaration is not an HTML tag.
Reason(R): The <!DOCTYPE> is an instruction to the web browser about what version of HTML the page is written in.

Answer:
(B) Both A and R are true but R is Not the correct explanation of A

Explanation:
The <!DOCTYPE> dedarationmustbethevery first thing in your HTML document, before the <html> tag. It must be present at the top of the document and should be written as follows: c.’DOCTYPE htmi>

Question 3.

Assertion(A): With HTML, you can develop and publish documents and data with headings, text, tables, lists, hyperlinks, photos, etc., in static form.
Reason(R): You can create forms for managing transactions, for use in searching the information, making reservations, ordering products, etc.

Answer:
(B) Both A and R are true but R is Not the correct explanation of A

Explanation:
HTML is used to design and create a web page. It is used as a scripting language. Besides HTML, there are other languages also like Java, PHP .NET, etc. using which websites can be created. With the commands or tags available in HTML you can add spreadsheets, video clips, sound clips, presentations and other applications directly in the web page.

Question 4.

Assertion(A): HTML is a platform independent language.
Reason(R): As the same HTML program works on any operating system without any modification.

Answer:
(A) Both A and R are true and R is the correct explanation of A
Explanation:
In computing, cross-platform software is a computer software that is implemented on multiple computing platforms.

Question 5.

Assertion(A): In HTML, the tag <HTML>is same as <html>.
Reason(R): HTML is not a case sensitive language

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
Case sensitive means both uppercase and lowercase letters are treated as same. Thus, in HTML, tag and attributes are not case-sensitive.

Question 6.

Assertion(A): Attributes provides additional information about HTML elements used to create a web page.
Reason(R): Attributes are always mentioned in the end tag.

Answer:
(C) A is true and R is false

Explanation:
Attributes gives some additional information about the tag. All HTML elements can have their own attributes. Attributes are always mentioned in the start tag.

Case-Based MCQs

Attempt any ? sub-parts from each question. Each sub-part carries 1 mark.
I. HTML can be used to insert images in the following formats: GIF (Graphics Interchange Format) XBM (X Bitmap) JPG or JPEG (Joint Photographic Experts Group) PNG (Portable Network Graphics) The <IMG> tag is used to insert an image in a web page. It is very important to know that images are not technical part of the web page file, they are separate files which are inserted into the web page, when it is viewed by a browser.
So, a simple web page with one image is actually two files. When an HTML file is displayed in a browser, it requests the image file and places it on the web page where the tag appears.

Question 1.

Web browsers display images in the following format

(A) XBM
(B) JPEG
(C) GIF
(D) All of these
Answer:
(D) All of these

Explanation:
HTML supports various formats of the images, like Graphics Interchange Format (GIF), Joint Photographic Experts Group (JPEG), etc. GIF is limited to an 8-bit palette or 256 colors. This makes the GIF format suitable for storing graphics with relatively few colors such as simple diagrams, shapes, logos and cartoon style images whereas JPEG is the best format for photographers. It contains million colors.

Question 2.

Which tag is used to insert an image in web page?

(A) <A>
(B) <TABLE>
(C) <IMG>
(D) <P>
Answer:
(C) <IMG>

Explanation:
Images can enhance the appearance and the design of a web page. In HTML, the <IMG> tag is used to define images. The <IMG> tag at a minimum, takes two attributes, ALT and SRC.

Question 3.

The correct HTML code for inserting an image is :

(A) <IMG href=”image.gif”>
(B) <IMG> image.gif</gif>
(C) < IMG src = “image.gif “>
(D) cIMAGE src = “image.gif”>
Answer:
(C) < IMG src = “image.gif “>

Explanation:
The syntax of inserting an image in a web page is: <IMG SRC=”URL”> The URL points to the location where the image is stored. The browser puts the image where the image tag occurs in the document.

Question 4.

src attribute used with <IMG> tag stands for :

(A) screen
(B) screen resolution count
(C) source
(D) structure
Answer:
(C) source

Explanation:
The SRC attribute is used to specify the URL of the image. The SRC attribute is mandatory to insert an image.

Question 5

attribute is used to specify the location of an image file.

(A) alt
(B) src
(C) align
(D) name
Answer:
(B) src

Explanation:
The SRC attribute is used to give te URL of an image. It is compulsory to use this attribute to insert an image.

Question 6.

The alternate text of an image can be displayed by using the <IMG> tag.

(A) src
(B) alt
(C) align
(D) None of these
Answer:
(B) alt

Explanation:
The Alt attribute contains the alternate text for an image. It appears on the web page if image does not appear on the web page due to some reason.
Syntax: <IMG SRC=”URL” ALT=”Text” >

Question 7.

alt attribute allows

(A) addition of an alternate hyperlink
(B) addition of a border to image
(C) use of an alternate image in place of the specified image
(D) addition of alternate text about an image Answer:Option (D) is correct.

Explanation:
The text in the ALT attribute appears whenever the image is not shown by the browser for some reason.

II. HTML Structure
HTML document is a combination of various tags, which define the structure and appearance of the web page. Following four basic elements are always present in every HTML document:

The <HTML> tag tells the browser that this is an HTML document. You must begin your html files with this tag and must end your HTML file with matching closing tag.

The <HEAD > tag is used for text and tags that do not appear directly on the web page. It acts as a header of file and contains some information like setting the title of the web page.

The < TITLE > tag contains the document title. This tag lies between <HEAD> and </HEAD > tags. The title specified inside this tag appears on the browser’s title bar.

The <BODY> tag is used for text and tags that appears directly on the web page. It helps us to create a look and feel of the web page. It holds all your content words, pictures and other stuff.

Question 1.

An example of HTML editor is :

(A) Notepad
(B) Dreamweaver
(C) Microsoft frontpage
(D) All of these
Answer:
(D) All of these

Explanation:
Both Dreamweaver and Microsoft Frontpage areWYSIWYG editors. Notepad is a text editor.

Question 2.

The meaning of M in HTML is :

(A) Management
(B) Markup
(C) Modified
(D) Machine
Answer:
(B) Markup

Explanation:
HTML is a HyperText Markup Language which is the most widely used language to create web pages of a website.

Question 3.

Which of the following is the correct code of HTML page?

(A) <HTML>
(B) <HTML>
<HEAD> <TITLE> Hello
</HEADS >
</HTML>
(C) <HTML>
<BODY> Hello
</HTML>
(D) <HTML>
<HEAD> Hello <BODYs </HTMLs
Answer:
(B) <HTML>
<HEAD> <TITLE> Hello
</HEADS >
</HTML>

Explanation:
The structure of a HTML page is: <HTML>
<HEAD>
< title > Document header </title>
</HEAD>
<BODY>
Contents
</body>
</html>

Question 4.

Tags and text that do not display directly on the web page are placed in :

(A) BODY
(B) TABLE
(C) HEAD
(D) TITLE
Answer:
(C) HEAD

Explanation:
The <HEAD> tag defines the document header. It contains the information about a document’s title and style descriptions. It is written inside HTML tag. Syntax: <HEAD>…………</HEAD>

Question 5.

A web page normally consists of:

(A) head and body
(B) top and bottom
(C) body and font
(D) body and title
Answer:
(A) head and body

Explanation:
An HTML document contains two distinct parts, the head section and the body section. The head section contains information about the document that is not displayed on the screen. The body section contains the elements that are to be displayed on the web page. Every HTML document should start by declaring that it is an HTML document.

Question 6.

Where do you place the < TITLE > tag in a HTML?

(A) BODY
(B) HEAD
(C) TITLE
(D) FONT
Answer:
(B) HEAD

Explanation:
The <TITLE> tag contains the title of the document. The title is displayed in the title bar at the top of the web browser. The title must be contained in the head section. Syntax: < TITLE > </title>

Question 7.

Which section is used for text and tags that are shown directly on your web pages?

(A) Meta
(B) Head
(C) Body
(D) Table
Answer:
(C) Body

III. HTML AND ITS CAPABILITIES
HTML is the most widely used language to create web pages of a website. With CSS and JavaScript, it forms a pillar of web technologies for the World Wide Web. With HTML, you can develop and publish documents and data with headings, text, tables, lists, hyperlinks, photos, etc., in static form. You can create forms for managing transactions, for use in searching the information, making reservations, ordering products, etc.
HTML is an ideal software used to design and create a web page. It is used as a scripting language. Besides HTML, there are other languages also like Java, PHE .NET, etc. using which websites can be created. With the commands or tags available in HTML you can add spreadsheets, video clips, sound clips, presentations and other applications directly in the web page. HTML is a platform independent language. It is not a case sensitive language.

Question 1.

The full for of HTML is………….

(A) Hyper Text Markup Language
(B) Hyper Text Makeup Language
(C) Higher Text Markup Language
(D) Hyper Text mashup Language
Answer:
(A) Hyper Text Markup Language

Explanation:
HTML is a format that tells a computer how to display a web page. The documents themselves are plain text files with special “tags” or codes that a web browser uses to interpret and display information on your , computer screen .

Question 2.

The full form of CSS is ………..

(A) Categorised Style Sheet
(B) Console Style Sheet
(C) Cascading Style Sheet
(D) Cascading Settle Sheet
Answer:
(C) Cascading Style Sheet

Explanation:
CSS stands for Cascading Style Sheets.CSS describes how HTML elements are to be displayed on screen, paper, or in other media.CSS saves a lot of work. It can control the layout of multiple web pages all at once. External stylesheets are stored in CSS files.

Question 3.

Which of the following statement is/are TRUE?

(A) HTML is an ideal software used to design and create a web page.
(B) HTML is used as a scripting language.
(C) HTML forms a pillar of web technologies for the World Wide Web.
(D) All of these
Answer:
(D) All of these

Explanation:
HTML was invented in November 1990 by a scientist called Tim Berners Lee. The purpose was to make it easier for scientists at different universities to gain access to each

Question 4.

HTML program works on any operating system without any modification which means it is a language.

(A) Platform independent
(B) Platform dependent
(C) Case-sensitive
(D) None of these
Answer:
(A) Platform independent

Explanation:
HTML is a platform independent language as it can be operated on various operating systems.

Question 5.

The tag <HTML>is same as <html> which means HTML is a……language.

(A) Case sensitive
(B) Not a case sensitive language
(C) Platform dependent
(D) Platform independent
Answer:
(B) Not a case sensitive language

Explanation:
HTML is not a case-sensitive language as uppercase and lowercase letters are treated as same.

Question 6.

Which of the following is not a scripting language?

(A) PHP
(B) Java
(C) NET
(D) MS Office
Answer:
(D) MS Office

Explanation:
Microsoft Office, or simply Office, is a family of client-server software, and services developed by Microsoft. Initially a marketing term for an office suite (bundled set of productivity applications), the first version of Office contained Microsoft Word, Microsoft Excel, and Microsoft PowerPoint.

Question 7.

Which of the following function a user can perform using HTML?

(A) With HTML, you can develop and publish documents and data with headings, text, tables, lists, hyperlinks, photos, etc., in static form.
(B) You can create forms for managing transactions, for use in searching the information, making reservations, ordering products, etc.
(C) With the commands or tags available in HTML you can add spreadsheets, video clips, sound clips, presentations and other applications directly in the web page.
(D) All of these
Answer:
(D) All of these

Explanation:
With HTML, you can develop and publish documents and data with headings, text, tables, lists, hyperlinks, photos, etc., in static form, you can create forms for managing transactions, for use in searching the information, making reservations, ordering products, etc.

I. INSERTING IMAGES in HTML
Images can enhance the appearance and the design of a web page. In HTML, the <IMG> tag is used to define images. The <IMG> tag at a minimum, takes two attributes, ALT and SRC. <IMG> tag is empty tag. The attribute which specifies the URL (web address) of the image is SRC. The ALT attribute furnishes an alternate text for an image, if the user for some reason cannot view it (because of slow connection, or if the user uses a screen reader, an error in the SRC attribute). It supports various formats of the images, like GIF, JPEG, etc. GIF is limited to an 8-bit palette or 256 colors.
This makes the GIF format suitable for storing graphics with relatively few colors such as simple diagrams, shapes, logos and cartoon style images whereas JPEG is the best format for photographers. It contains 1 million colors.

Question 1.

What is the full form of JPEG?

(A) Joint Photographic Experts Group
(B) Zone Photographic Experts Group
(C) Joint Photography Experts Group
(D) Joint Photographic Excel Group
Answer:
(A) Joint Photographic Experts Group

Explanation:
The attribute which is used to enumerate the location where the linked text, phrase or image is going to open is called the target attribute.

Question 2.

The full form of GIF is……..

(A) Graphics Interchange Formation
(B) Graphical Interchange Format
(C) Graphics Interchange Format
(D) Graphics Interconnected Format
Answer:
(C) Graphics Interchange Format

Explanation:
The Graphics Interchange Format i is a bitmap image formal that was developed bv a team at the online services provider CompuServe led by American computer scientist Stove Wilhite and released on 15 June 1987.

Question 3.

The attributes of <IMG> tag is/are

(A) ALT
(B) SRC
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
Both SRC and ALT are the attributes of <IMG> tag.The SRC attribute is used to specify the URL of the image. The SRC attributeis mandatory to insert an image.The Alt attribute contains the alternate text for an image.

Question 4.

< IMG > is an empty tag which means

(A) It does not have opening tag
(B) It does not have closing tag
(C) It does not support any attribute
(D) None of these
Answer:
(B) It does not have closing tag

Explanation:
An empty tag is a tag which does not hold an end tag which means only starting tag is there in <IMG>. The </IMG> is not required.

Question 5.

In HTML, the < IMG > tag is used to define

(A) Website
(B) Webpages
(C) Images
(D) None of these
Answer:
(C) Images

Explanation:
In HTML, <IMG> tag is used to insert an image on the webpage. It used the SRC attribute.

Question 6.

Which of the following statements is/are FALSE?

(A) JPEG contains 256 colors.
(B) GIF is limited to an 8-bit palette or 1 millioncolors.
(C) GIF format is best suited for photographers.
(D) All of these
Answer:
(D) All of these

Question 7.

The ALT attribute is used to………..

(A) Specifies the URL.
(B) Furnish an alternate text for an image.
(C) Form diagrams, shapes, logos and cartoon style images.
(D) None of these
Answer:
(B) Furnish an alternate text for an image.

Explanation:
The <ALT> attribute is used to display text when the iipage is riot loaded by the browser.

MCQ Questions for Class 10 Computer Applications with Answers

MCQ Questions for Class 10 Computer Applications Chapter 5 HTML Basics Read More »

MCQ Questions for Class 10 Computer Applications Chapter 4 Mobile Technologies

MCQ Questions / Prasanna

Mobile Technologies Class 10 MCQ Questions with Answers

Question 1.

Which is the world’s most widely used cellphone technology?

(A) GPS
(B) GPRS
(C) GSM
(D) CDMA
Answer:
(C) GSM

Explanation:
The Global System for Mobile Communications is a standard developed by the European Telecommunications Standards Institute to describe the protocols for second- generation digital cellular networks used by mobile devices such as mobile phones and tablets. It was first deployed in Finland in December 1991.

Question 2.

CDMA uses ……….waves.

(A) Radio
(B) Micro
(C) Infrared
(D) Electromagnetic
Answer:
(D) Electromagnetic

Explanation:
Code-division multiple access is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.

Question 3.

Which technology is used to connect subscriber to nearest telephone exchange through using radio link?

(A) CDMA
(B) WLL
(C) GSM
(D) Wi-Fi
Answer:
(B) WLL

Explanation:
Wireless local loop, is the use of a wireless communications link as the “last mile / first mile” connection for delivering plain old telephone service or Internet access to telecommunications customers.

Question 4.

In TDMA, T stands for :

(A) Time
(B) Third
(C) Technology
(D) Triple
Answer:
(A) Time
Explanation:
Time-division multiple access is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots.

Question 5.

…………… is a mode of sending and receiving short messages from one phone to another.

(A) SMS
(B) MMS
(C) CDMA
(D) GSM
Answer:
(A) SMS

Explanation:
SMS text messaging supports languages internationally. It works fine with all languages supported by Unicode, including Arabic, Chinese, Japanese and Korean.

Question 6.

Multimedia messaging is also known as………

(A) Color messaging
(B) Picture messaging
(C) Text messaging
(D) None of these
Answer:
(B) Picture messaging

Explanation:
MMS permits mobile subscribers to send multimedia files su ch as images, videos, audios, etc., as a message.

Question 7.

………. refers to the third generation of mobile telephony technology.

(A) 2G
(B) 3G
(C) 4G
(D) 5G
Answer:
(B) 3G

Explanation:
3G is generally used in phones i and handsets as a means to connect the phone ! to the internet in order to make voice and video calls, to download and upload data, and I to surf the Web.

Question 8.

SMS appeared on the wireless scene in 1991 in

(A) USA
(B) London
(C) Turkey
(D) Europe
Ans.
(D) Europe

Explanation:
An SMS message is sent from a device to a Short Message Service Center (SMSC), which, in turn, communicates with mobile networks to determine the subscriber’s location. Then, the message is forwarded as a small data packet to the destination device. Subsequent messages sent by the original source device undergo the same process, also known as store and forward.

Assertion and Reason Based MCQs

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is Not the correct explanation of A
(C) A is true and R is false
(D) A is false and R is true

Question 1.

Assertion(A): SMS messages are also sent via web-based browser applications, instant message (IM) applications and Voice over Internet Protocol (VoIP) applications, such as Skype.
Reason(R): SMS works fine with only English language.

Answer:
(C) A is true and R is false

Explanation:
SMS text messaging supports languages internationally. It works fine with all languages supported by Unicode, including Arabic, Chinese, Japanese and Korean.
Question 2.

Assertion(A): MMS supports attachments just as e-mail does.
Reason(R): MMS is a store-and-forward method of transmitting graphics, video clips, sound files and short text messages over wireless networks via WAP protocol.

Answer:
(D) A is false and R is true

Explanation:
MMS is based on the concept of multimedia messaging. MMS does not support attachments as e-mail does. The important use of MMS is for communication between mobile phones.

Question 3.

Assertion(A): 3G offers higher data speed.
Reason(R): 3G does not support videoconferencing.

Answer:
(C) A is true and R is false
Explanation:
The International Telecommuni-cations Union (ITU) defined the third genera-tion (3G) of mobile telephony standards IMT- 2000 to facilitate growth, increase bandwidth, and support more diverse applications.

Question 4.

Assertion(A): 4G is a mobile multimedia, available anytime anywhere.
Reason(R): 4G is easier to standardize and it offers affordability.

Answer:
(B) Both A and R are true but R is Not the correct explanation of A

Explanation:
4G wireless technology is also referred to by “MAGIC” which stands for Mobile multimedia, Any-where, Global mobility solutions over, Integrated wireless and Customized services.

Question 5.

Assertion(A): The cost of upgrading to 3G device is expensive.
Reason(R): It requires closer base stations that is very expensive.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
3G refers to the third generation of cellular technology that enables mobile telephony. The third-generation standard follows two earlier generations that were deployed on mobile networks and across mobile phones.

Question 6.

Assertion(A): Class 0 SMS is displayed on the mobile screen without being saved in the message store or on the SIM card.
Reason(R): As Class SMS disappears after reading it.

Answer:
(A) Both A and R are true and R is the correct explanation of A

Explanation:
Class 0 SMS (Short Message Service) text messages aren’t stored in the memory of the message recipient’s cell phone. Unless saved upon review by the message ? recipient, Class 0 SMS text messages disappear after being read. Class 0 messages can also be used to “ping” another cell phone. They can receive confirmation of a recipient’s messaging capabilities without the recipient even knowing they were pinged. While Class 0 messages can be abused, they can also be an effective troubleshooting tool for SMS communication

Case- Based MCQs

Attempt any four sub-parts from each question. Each sub-part carries 1 mark.
I. Mobile Technology
Mobile technology is a technology where the user uses mobile phone to do the operations related to communication system, for example to establish communication with friends, relatives and others. It uses to transmit the data from one system to others. Mobile Technology consists of portable two-way communications systems, computing devices, and the related networking equipment. Mobile technology is a technology which is used primarily in cellular communication system and other related aspects. It uses a network type in which several transmitters are able to send data on a single channel at the same time. This model is known as Code-Divisions Multiple Accesses (CDMA). This platform allows many users to use single frequencies, as it limits the possibility of frequency interference from two or more sources.

Over the years, the channel has grown. Mobile technology is evolving rapidly; its applications are becoming increasingly diverse over the years and are gradually replacing some similar sources on the market that are also used for communication, e.g. post office and land lines. Mobile technology has improved from a basic phone call and texting device into a multi-tasking system used for GPS navigation, internet browsing, gaming, instant messaging, etc. With the rise, professionals argue that computer technology’s future depends on wireless networking and mobile computing. Mobile technology is becoming more and more popular through tablets and portable computers. Mobile Technology is characterized as any device with internet capabilities that can be accessed from wherever the user is. Current devices in this class contain devices like smartphones, tablets, some iPods and laptops, although this list will certainly increase in the coming years.

Following are the key mobile technologies,
1. SMS: “SMS” means Short Message Service. It is now a days the oldest and most commonly used text messaging service. SMS was initially designed for phones using GSM (Global System for Mobile Communications) communication, but it is now supported by all major cellular phone systems.

2. MMS: MMS messaging known as Multimedia Messaging Service is a standard way to deliver multimedia content-including messages. In comparison to SMS, MMS can offer a variety of media including up to 40 seconds of video, one picture, a multi-image slideshow, or audio.

3. 3G: Number three in 3G’s name means third generation access technology which allows mobile phones to be connected to the internet. Every new technology has new frequency bands and higher rates of data transmission.

4. 4G: 4G is the fourth generation of mobile networking technology. It carries on from mobile technology of 3G and 2G. Compared with 3G, the 4G networks are very good. Premium 4G provides download speeds of about 14 Mbps, which is almost five times faster than that provided by its predecessor, the 3G network. Currently, 4G networks can reach speeds as high as 150 Mbps, enabling users to download gigabytes of data in minutes or even seconds, rather than hours like with 3G networks.

Question 1.

In which one of the following codes with specific characteristics can be applied to the transmission?

(A) CDMA
(B) GPRS
(C) GSM
(D) All of the above
Answer:
(A) CDMA

Explanation:
Code Division Multiple Access (CDMA) is a sort of multiplexing that facilitates various signals to occupy a single transmission channel. It optimizes the use of available S bandwidth. The technology is commonly used in ultra-high-frequency (UHF) cellular telephone systems, bands ranging between the 800-MHz and 1.9-GHz.

Question 2.

Write the full form of CDMA.

(A) Character-Divide Multiple Accesses
(B) Code-Divide Multiple Accesses
(C) Character-Divisions Media Accesses
(D) Code-Divisions Multiple Accesses
Answer:
(D) Code-Divisions Multiple Accesses

Explanation:
Code Divisions Multiple Access system is very different from time and frequency multiplexing. In this system, a user has access to the whole bandwidth for the entire duration. The basic principle is that different CDMA codes are used to distinguish among the different users.

Question 3.

Which of the following offers packet mode data transfer service over the cellular network?

(A) TCP
(B) GPRS
(C) GSM
(D)None of the above
Answer:
(B) GPRS

Explanation:
General Packet Radio System is also known as GPRS is a third-generation step toward internet access. GPRS is also known as GSM-IP that is a Global-System Mobile Communications Internet Protocol as it keeps the users of this system online, allows to make voice calls, and access internet on-the-go. Even Time-Division Multiple Access (TDMA) users benefit from this system as it provides packet radio access.

Question 4.

Which one of the following enables us to use the entire bandwidth simultaneously?

(A) TDMA
(B) CDMA
(C) FDMA
(D) All of the above
Answer:
(B) CDMA

Explanation:
CDMA allows up to 61 concurrent users in a 1.2288 MHz channel by processing each voice packet with two PN codes.

Question 5.

Mobile Computing allows transmission of data from one wireless-enabled device to another

(A) Any device
(B) Wired device
(C) Wireless-enabled device
(D) One of the above
Answer:
(C) Wireless-enabled device

Explanation:
Mobile technology is a form of technology and it is mostly used in cellular communication and other related aspects. It includes SMS, MMS, 3G and 4G. It is a portable electronic device and allows you to share the data from one phone to another.

Question 6.

Which of the following is supported data rates of 4G Networks?

(A) 1024 kbps
(B) 150 mbps
(C) 200 mbps
(D) None of the above
Answer:
(B) 150 mbps

Explanation;
4G is a mobile multimedia, available anytime anywhere, Global mobility support, integrated wireless solution, and customized personal service network system.

Question 7.

Write the full form of GSM.

(A) Globe System for Mobile Communications
(B) Global System for Media Communications
(C) Global System for Mobile Communications
(D) Global System for Mobile Characteristics Answer:Option (C) is correct.

Explanation:
GSM stands for Global System for Mobile Communications. It is a digital cellular technology used for transmitting mobile voice and data services.

II. First Generation
1G (First Generation) was introduced in 1980 and was based on narrow band analog cellular technology. It used circuit switching and only voice calls were available. It used radio waves for transmission. 1G used CDMA (Code Division Multiple Access). Each user was allocated a unique code sequence. The sender encoded the signal using the given code. The receiver also had the unique code and used it to decode the data. 2G (Second Generation) was introduced in 1990s and was based on GSM technology. It is used circuit switching but provided paging, SMS, voicemail and fax services. GSM (Global System for Mobile communications) is a combination of FDMA and TDMA. SIM (Subscriber Identification Module) cards are interchangeable modules which store subscriber and wireless provider information.

Question 1.

1G was introduced in………

(A) 1979
(B) 1980
(C) 1981
(D) 1982
Answer:
(B) 1980

Explanation:
Launched by Nippon Telegraph and Telephone in 1980,1G was first introduced to the citizens of Tokyo. By 1984, the first generational network covered all of Japan, making it the first country to have 1G service nationwide.

Question 2.

First Generation technology was based on narrow band technology.

(A) Cellular
(B) Digital
(C) Global
(D) None
Answer:
(A) Cellular

Explanation:
Wireless networks based on analog frequency division multiple access technologies. Many systems were individually tailored, country-specific solutions, including technologies such as AMPS, Nordic Mobile Telephone (NMT) and total access communications system (TACS).

Question 3.

1G technology uses for transmission.

(A) Wires
(B) Plugs
(C) Radio waves
(D) Optical fiber
Answer:
(C) Radio waves

Explanation:
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz).

Question 4.

In CDMA, C stands for………

(A) Cost
(B) Count
(C) Code
(D) Coast
Answer:
(C) Code

Explanation:
Code Division Multiple Access (CDMA) is an alternative cell phone technology to GSM. CDMA uses a “broad -spectrum” electromagnetic waves for signaling with wider bandwidth. This allows multiple people on multiple cell phones to be “communicated” over the same channel to share a bandwidth of frequencies.

Question 5.

Second Generation was based on……….

(A) GSM technology
(B) SIM technology
(C) Both (A) and (B)
(D) None of these
Answer:
(A) GSM technology

Explanation:
Global System for Mobile communications (GSM) is world’s most widely used cell phone technology having 80% mobile phone users. It is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second generation (2G) digital cellular networks for mobile phones.

Question 6.

…………..is a combination of FDMA and TDMA.

(A) 1G
(B) 2G
(C) GSM
(D) SIM
Answer:
(C) GSM

Explanation:
The Global System for Mobile Communications is a standard developed by the European Telecommunications Standards Institute to describe the protocols for second generation digital cellular networks used by mobile devices such as mobile phones and tablets. It was first deployed in Finland in December 1991.

Question 7.

……………. are interchangeable m odules which store subscriber……..and wireless provider information.

(A) 1G
(B) 2G
(C) GSM
(D) SIM
Answer:
(D) SIM

Explanation:
SIM (Subscriber Identification Module) are inter- changeable modules which store subscriber and wireless provider information.

III. 3G and 4G
3G is the third generation of Wireless & Mobile technologies. The “G” in 3G stands for generation. 3G networks reach 2mbps. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the internet. 3G allows connection with other IP networks in order to make voice and video calls, to download and upload data and to surf the net. 4G is fourth-generation of wireless service, which refers to the next wave of high-speed mobile technologies that will be used to replace current 3G networks. 4G wireless network is next step of 3G, which is currently the most widespread, high-speed wireless service.

Question 1.

………….. is the Wireless & Mobile technologies.

(A) 1G
(B) 2G
(C) 3G
(D) 4G
Answer:
(C) 3G

Explanation:
3G is the third generation of Wireless & Mobile technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.

Question 2.

………. refers to the next wave of high speed mobile technologies of 3G.

(A) 3G
(B) 4G
(C) Both (A) arid (B)
(D) None of these
Answer:
(B) 4G

Explanation:
4G is the fourth generation of mobile networking technology. It carries on from mobile technology of 3G and 2G. Compared with 3G, the 4G networks are very good. Premium 4G provides download speeds of about 14 Mbps, which is almost five times faster than that provided by its predecessor, the 3G network.

Question 3.

3G is mostly used with mobile phones and handsets as a means to connect the phone to the

(A) Wireless
(B) Internet
(C) Other Mobiles
(D) Network
Answer:
(B) Internet

Explanation:
Number three in 3 G’s name means third generation access technology which allows mobile phones to be connected to the internet. Every new technology has new frequency bands and higher rates of data transmission.

Question 4.

The “G” in 3G stands for ………

(A) Generation
(B) Genres
(C) Genetic
(D) Generator
Answer:
(A) Generation

Explanation:
It allows mobile operators to offer more service options to their users, including mobile broadband. 3G broadband offers greater flexibility and services by making more efficient use of mobile bandwidth. It is also known as IMT-2000.

Question 5.

3G allows connection with other IP networks in order to make .

(A) Voice
(B) Video calls
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Explanation:
3G networks succeed 2G ones, offering faster data transfer rates and are ? the first to enable video calls. This makes , them especially suitable for use in modern ; smart phones, which require constant high- % speed internet connection for many of their if applications.

Question 6.

3G allows connection with other networks.

(A) IP
(B) MAC
(C) TCP
(D) HTTP
Answer:
(A) IP

Explanation:
The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries.

Question 7.

3G networks reach ……….

(A) 2Mbps
(B) 4Mbps
(C) 6Mbps
(D) 8Mbps
Answer:
(A) 2Mbps

Explanation:
3G is the third generation of wireless mobile telecommunications ‘ technology. It is the upgrade for 2.5G GPRS ’ and 2.75G EDGE networks, for faster data transfer.

MCQ Questions for Class 10 Computer Applications with Answers

MCQ Questions for Class 10 Computer Applications Chapter 4 Mobile Technologies Read More »

MCQ Questions

MCQ Questions for Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables

Pair of Linear Equations in Two Variables Class 10 MCQ Questions with Answers

Graphically, the pair of equations 6x – 3y + 10 = 0 2x-y + 9 = 0 represents two lines which are

The pair of equations x + 2y + 5 = 0 and -3x -6y + 1 = 0 have:

If a pair of linear equations is consistent, then the lines will be: ‘

The pair of equations x = a and y = b graphically represents lines which are :

The pair of equations y = 0 and y = – 7 has :

One equation of a pair of dependent linear equations is -5x + 7y = 2. The second equation can be:

For what value of k, do the equations 3x – y + 8 =0 and 6x – ky = – 16 represent coincident lines

If the lines given by 3x + 2ky = 2 and 2x + 5y + 1 = 0 are parallel, then the value of k is

A pair of linear equations which has a unique solution x = 2, y = -3 is:

Aruna has only ₹ 1 and ₹ 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is ₹ 75, then the number of ₹ 1 and ₹ 2 coins are, respectively

The father’s age is six times his son’s age. Four years hence, the age of the father will be four times his son’s age. The present ages, in years, of the son and the father are, respectively:

If x = a, y = fa is the solution of the equations x – y = 2 and x + y = 4, then the values of a and fa are, respectively

The larger of two supplementary angles exceed the smaller by 18°, then the angles are:

If 2x + 4 y = 23 and 4x – y = 19, then the values of ( 5y = 2x) \(\left(\frac{y}{x}-2\right)\) and are:

Assertion (A): If the pair of linear equations 3x 4 y = 3 and 6x 4 ky = 8 does not have a solution, then the value of k = 2. Reason (R): If the pair of linear equations x 4 y – 4 = 0 and 2x 4 ky = 3 does not have a solution, then the value of k = 2.

Assertion (A): For all real values of c, the pair of equations x – 2y = 8 and 5x – 10y = c have a unique solution. Reason (R): Two lines are given to be parallel. The equation of one of the lines is 4x + 3y = 14,12x + 9y = 5.

Assertion (A): If the equation 3x – y + 8 = 0 and 6x – ky = -16 represent coincident lines, then the value of k = 2. Reason (R): If the lines given by 3x + 2Ay = 2 and 2x + 5y + 1 = 0 are parallel, then the value of k is 15.

Assertion (A): If 4 chairs and 3 tables cost ₹ 2100 and 5 chairs and 2 tables cost ₹ 1750, then the cost of 1 chair is ₹ 150. Reason (R): Sum of the ages of a father and the son is 40 years. If father’s age is 3 times that of his son, then the son’s age is 12 years.

Assertion (A): The solution of the pair of linear 19 equations x + y = 5 and 2x – 3y = 4 is x = \(\vec{a}\) and \(\vec{a}\) Reason (R): The solution of the pair of linear equations 3x + 4y = 10 and 2x – 2y = 2 is x = 2 and y = 1.

Assertion (A): In a AABC, ∠C = 3∠B = 2(∠A + ∠B), then ∠A = 20°. Reason (R): The angles of a triangle are x, y and 40°. The difference between the two angles x and y is 30°, then A = 85° and y = 55°.

If the fixed charges of auto rickshaw be ₹ x and the running charges be ₹ y km/hr, the pair of linear equations representing the situation is

A person travels a distance of 50 km. The amount he has to pay is

What will a person have to pay for travelling a distance of 30 km ?

The graph of lines representing the conditions are: (situation 2)

Assuming that the speed of first car and second car be u km/h and v km/h respectively. What is the relative speed of both cars while they are travelling in the same direction ?

What is the relative speed of both cars while they are travelling towards each other ?

What is the actual speed of one car?

What is the actual speed of pther car?

The given problem is based on which mathematical concept

The number of marbles Jivanti had:

The number of marbles John had:

If 45 is replaced by 55 in the above case discussed in the question, then the number of marbles Jivanti have:

According to the question 3, the number of marbles John have:

The given problem is based on which mathematical concept ?

MCQ Questions for Class 10 Maths with Answers

MCQ Questions for Class 10 Maths Chapter 1 Real Numbers

Real Numbers Class 10 MCQ Questions with Answers

n2– 1 is divisible by 8, if n is:

The largest number which divides 70 and 125, leaving remainders 5 and 8, respectively, is:

If two positive integers a and b are written as a = x3y2 and b = xy2; x, y are prime numbers, then HCF (a, b) is:

If the HCF of 65 and 117 is expressible in the form 65m – 117, then the value of m is

If two positive integers p and q can be expressed as p = ab2 and q = a3b; a, b being prime numbers, then LCM (p, q) is

The least number that is divisible by all the numbers from 1 to 10 (both inclusive) is

The product of a non-zero rational and an irrational number is :

The decimal expansion of the rational number 14587 wyj terminal after : 1250

\(\frac{1}{\sqrt{2}}\)= is a/an

(3 + √5) is:

The number 1.732 is:

2.1311 3111 311113…………is

Which of the following rational numbers is expressible as a terminating decimal?

The decimal expansion of the sum of rational numbers\(\frac{15}{4}\) and\(\frac{5}{40}\) will terminate after.

Assertion (A): (7 × 13 × 11) + 11 and (7 × 6 × 5 × 4 × 3 × 2 × 1) + 3 have exactly composite numbers. Reason (R): (3 × 12 × 101) + 4 is not a composite number.

Assertion (A): If HCF (336,54) = 6, then LCM (336,54) = 3000. Reason (R): The sum of exponents of prime factors in the prime factorisation of 196 is 4.

Assertion (A): HCF of two or more numbers = Product of the smallest power of each common prime factor, involved in the numbers. Reason (R): The HCF of 12,21 and 15 is 3.

Assertion (A): The product of two consecutive positive integers is divisible by 2. Reason (R): 13233343563715 is a composite number.

Assertion (A): The decimal expansion of assertion: \(\frac{15}{16000}\) is 0.09375 Reason (R): The decimal expansion of \(\frac{23}{2^{3} 5^{2}}\)

Assertion (A): The decimal expansion of the rational number \(\frac{57}{2^{2} \times 5}\) will terminate after 2 decimal places. 2 x 5 Reason (R): The decimal expansion of the rational number \(\frac{13}{3125}\)will terminate after 3 decimal places.

What is the minimum number of books you will acquire for the class library, so that they can be distributed equally among students of Section A or Section B?

If the product of two positive integers is equal to the product of their HCF and LCM is true then, the HCF (32,36) is

7 ×11× 13× 15 + 15 is a

If p and q are positive integers such that p = ab2 and q = a2b, where a, b are prime numbers, then the LCM (p, q) is

In each room the same number of participants are to be seated and all of them being in the same subject, hence maximum number participants that can accommodated in each room are

What is the minimum number of rooms required during the event?

The LCM of 60, 84 and 108 is

The product of HCF and LCM of 60,84 and 108 is

108 can be expressed as a product of its primes as

What is the maximum number of columns in which they can be planted?

Find the total number of plants

Find the sum of exponents of the prime factors of the maximum number of columns in which they can be planted.

What is total numbers of row in which they can be planted

Find the sum of exponents of the prime factors of total number of plants

What will be the value of x?

What will be the value of y?

What will be the value of z?

What will be the value of x?

What will be the value of y?

What will be the value of z?

Graphically, the pair of equations
6x – 3y + 10 = 0
2x-y + 9 = 0
represents two lines which are

Assertion (A): If the pair of linear equations 3x 4 y = 3 and 6x 4 ky = 8 does not have a solution, then the value of k = 2.
Reason (R): If the pair of linear equations x 4 y – 4 = 0 and 2x 4 ky = 3 does not have a solution, then the value of k = 2.

Assertion (A): For all real values of c, the pair of equations x – 2y = 8 and 5x – 10y = c have a unique solution.
Reason (R): Two lines are given to be parallel. The equation of one of the lines is 4x + 3y = 14,12x + 9y = 5.

Assertion (A): If the equation 3x – y + 8 = 0 and 6x – ky = -16 represent coincident lines, then the value of k = 2.
Reason (R): If the lines given by 3x + 2Ay = 2 and 2x + 5y + 1 = 0 are parallel, then the value of k is 15.

Assertion (A): If 4 chairs and 3 tables cost ₹ 2100 and 5 chairs and 2 tables cost ₹ 1750, then the cost of 1 chair is ₹ 150.
Reason (R): Sum of the ages of a father and the son is 40 years. If father’s age is 3 times that of his son, then the son’s age is 12 years.

Assertion (A): The solution of the pair of linear 19 equations x + y = 5 and 2x – 3y = 4 is x = \(\vec{a}\) and \(\vec{a}\)
Reason (R): The solution of the pair of linear equations 3x + 4y = 10 and 2x – 2y = 2 is x = 2 and y = 1.

Assertion (A): In a AABC, ∠C = 3∠B = 2(∠A + ∠B), then ∠A = 20°.
Reason (R): The angles of a triangle are x, y and 40°. The difference between the two angles x and y is 30°, then A = 85° and y = 55°.

The graph of lines representing the conditions are:
(situation 2)

Assuming that the speed of first car and second car be u km/h and v km/h respectively.
What is the relative speed of both cars while they are travelling in the same direction ?

n²– 1 is divisible by 8, if n is:

If two positive integers a and b are written as a = x³y² and b = xy²; x, y are prime numbers, then HCF (a, b) is:

If two positive integers p and q can be expressed as p = ab² and q = a³b; a, b being prime numbers, then LCM (p, q) is

Assertion (A): (7 × 13 × 11) + 11 and (7 × 6 × 5 × 4 × 3 × 2 × 1) + 3 have exactly composite numbers.
Reason (R): (3 × 12 × 101) + 4 is not a composite number.

Assertion (A): If HCF (336,54) = 6, then LCM (336,54) = 3000.
Reason (R): The sum of exponents of prime factors in the prime factorisation of 196 is 4.

Assertion (A): HCF of two or more numbers = Product of the smallest power of each common prime factor, involved in the numbers.
Reason (R): The HCF of 12,21 and 15 is 3.

Assertion (A): The product of two consecutive positive integers is divisible by 2.
Reason (R): 13233343563715 is a composite number.

Assertion (A): The decimal expansion of assertion: \(\frac{15}{16000}\) is 0.09375
Reason (R): The decimal expansion of \(\frac{23}{2^{3} 5^{2}}\)

Assertion (A): The decimal expansion of the rational number \(\frac{57}{2^{2} \times 5}\) will terminate after 2 decimal places. 2 x 5
Reason (R): The decimal expansion of the rational number \(\frac{13}{3125}\)will terminate after 3 decimal places.

If p and q are positive integers such that p = ab² and q = a²b, where a, b are prime numbers, then the LCM (p, q) is

Assertion (A): Freedom of information is used to access information of a citizen’s right that is held by the state.
Reason (R): In some countries, this freedom is supported as a constitutional right.

Assertion (A): E-commerce security is defined as a set of protocols that safely guide ecommerce transactions.
Reason (R): Security is an important part of any transaction that takes place over the internet.

Assertion (A): Digital signature is an e-signature that is valid through encryption.
Reason (R): Digital signatures does not meet the need for authentication and integrity.

Assertion (A): Credit card details can be safely sent with SSL(Secure Socket Layer), but then also it is not save.
Reason (R): Once the details are stored on the server they are vulnerable to outsiders hacking into the server and accompanying network.

Assertion (A): An unordered list is a list in which there is no definite order to the items.
Reason (R): As, an unordered list of items are marked with bullets.

Assertion (A): A definition list is not a list of items.
Reason (R): A definition list is a list of terms and explanation of the terms.

Assertion (A): The SUBMIT or RESET buttons that sends all the collected information to the server or clears the form information respectively.
Reason (R): The information is then processed and give the output

Assertion (A): It is not possible to have a form inside a form.
Reason (R): A form cannot be nested.

Assertion (A): The <FORM NAME=”Form Name”> specifies the name of the Form.
Reason (R): The form name is always displayed on the Form.

Assertion (A): Data cannot be encrypted in the form.
Reason (R): The ENCTYPE attribute specifies how the data is sent to the destination.

Assertion (A): Data cannot be encrypted in the form.
Reason (R): The ENCTYPE attribute specifies how the data is sent to the destination.

Assertion (A): The <INPUT> tag is required when the user has to give some input/data.
Reason (R): The <INPUT> tag is not a compulsory tag used within the FORM tag.