Author name: Prasanna

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 9 Coordination Compounds with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Coordination Compounds Class 12 MCQs Questions with Answers and assess their preparation level.

Coordination Compounds Class 12 MCQs Questions with Answers

Solving the Coordination Compounds Multiple Choice Questions of Class 12 Chemistry Chapter 9 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Coordination Compounds Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 9 Chemistry Class 12 and cross-check your answers during preparation.

Question 1.
The coordination number of cobalt in [Co(en)₃]³⁺ is
(a) 3
(b) 4
(c) 6
(d) 2

Answer

Answer: (c) 6

---

Question 2.
The IUPAC name of K₃[Fe(CN)₅NO] is
(a) potassium pentacyanonitrosylferrate(II)
(b) potassium pentacyanonitroferrate(II)
(c) potassium pentacyanonitrosylferrate(III)
(d) tripotassium pentacyanonitrosy If errate(II)

Answer

Answer: (a) potassium pentacyanonitrosylferrate(II)

---

Question 3.
Which of the following is hexadentate ligand?
(a) diene
(b) CN^–
(c) en
(d) EDTA

Answer

Answer: (d) EDTA

---

Question 4.
On adding AgNO₃ solution to 1 mole of PdCl₂. 4NH₃ two moles of AgCl are formed. The secondary valency of Pd in the complex will be
(a) 0
(b) 2
(c) 4
(d) 1

Answer

Answer: (c) 4

---

Question 5.
What kind of isomerism exists between [Cr(H₂O)6]Cl₃ and [Cr(H₃O)₅Cl]Cl₂. H₂O?
(a) Linkage isomerism
(b) Solvate isomerism
(c) Ionisation isomerism
(d) Coordination isomerism

Answer

Answer: (b) Solvate isomerism

---

Question 6.
The IUPAC name of [PtCI(NO₂) (NH₃)₄]SO₄ is
(a) Tetraamminechloridonitrito-N- platinate (III) sulphate
(b) Tetraamminechloridonitrito-N- platinum (IV) sulphate
(c) Chloridonitrito-N- ammineplatinum(IV) sulphate
(d) Tetraamminechloridonitrito-N- platinate (IV) sulphate

Answer

Answer: (b) Tetraamminechloridonitrito-N- platinum (IV) sulphate

---

Question 7.
Which metal is present in vitamin B₁₂ cyanocobalamin?
(a) Fe
(b) Co
(c) Mg
(d) Pt

Answer

Answer: (b) Co

---

Question 8.
Which is present in metal carbonyls?
(a) M-C σ bond
(b) M – C π bond
(c) M-C σ and M – C π bond
(d) None of these

Answer

Answer: (c) M-C σ and M – C π bond

---

Question 9.
How many ions are given by [Co(NH₃)₅ Br] Cl₂ complex in water?
(a) 4
(b) 2
(c) 6
(d) 3

Answer

Answer: (d) 3

---

Question 10.
Which complex exhibits geometrical isomerism?
(a) [MnBr₄]²⁺
(b) [Pt(NH₃)₃Cl]+
(c) [PtCl₂(P(C₂H₂)₃)₂]
(d) [Fe(H₂O)₅NO]²⁺

Answer

Answer: (c) [PtCl₂(P(C₂H₂)₃)₂]

---

Question 11.
The IUPAC name of K[Ag(CN)₂] is
(a) dicyanidosilver(l)
(b) dicyanidoargentate(l)
(c) potassium dicyanidoargentate(l)
(d) potassium dicyanidoargentate(ll)

Answer

Answer: (c) potassium dicyanidoargentate(l)

---

Question 12.
The IUPAC name of the compound K₂[Ni(CN)₄] is
(a) Potassium tetracyanidonickelate(lll)
(b) Potassium tetracyanidonickelate(ll)
(c) Potassium tetracyanidonickel(lll)
(d) Potassium tetracyanidonickel(ll)

Answer

Answer: (b) Potassium tetracyanidonickelate(ll)

---

Question 13.
Which metal carbonyl has the strongest C-O bond?
(a) Mn(CO)₆⁺
(b) Cr(CO)₆
(c) V(CO)₆
(d) Fe(CO)₅

Answer

Answer: (a) Mn(CO)₆⁺

---

Question 14.
In the following which metal complex ion has zero oxidation number?
(a) [Cr(H₂O)₆]³⁺
(b) [CuCl₄]^2-
(c) [Fe(CO)₅]
(d) [Fe(CN)₆]^3-

Answer

Answer: (c) [Fe(CO)₅]

---

Question 15.
In the following chelating ligand is
(a) OH^–
(b) H₂NCH₂CH₂NH₂
(c) Cl^–
(d) CN^–

Answer

Answer: (b) H₂NCH₂CH₂NH₂

---

Question 16.
What is the coordination number in the K₃[Cr(C₂O₄)₃] coordinate compound
(a) 3
(b) 6
(c) 4
(d) 2

Answer

Answer: (b) 6

---

Question 17.
What is the oxidation state of Fe in K₃[Fe(CN)₆]
(a) +2
(b) +3
(c) +4
(d) +1

Answer

Answer: (b) +3

---

Question 18.
K₃[Al(C₂O₄)₃] is named as
(a) potassium trioxalatoaluminate (III)
(b) potassium aluminooxalate
(c) potassium aluminium(lll) oxalate
(d) potassium trioxalatoaluminate (II)

Answer

Answer: (a) potassium trioxalatoaluminate (III)

---

Question 19.
Predict the number of ions produced per formula unit in an aqueous solution of [Co(en)₃]Cl₃.
(a) 4
(b) 3
(c) 6
(d) 2

Answer

Answer: (a) 4

---

Question 20.
When one mole of CoCl₃.5NH₃ was treated with excess of silver nitrate solution, 2 mol of AgCl was precipitated. The formula of the compound is:
(a) [Co(NH₃)₅Cl₂]Cl
(b) [Co(NH₃)₅Cl]Cl₂
(c) [Co(NH₃)₄Cl₂] (NH₃)Cl
(d) [Co(NH₃)₃Cl₃] (NH₃)₂

Answer

Answer: (b) [Co(NH₃)₅Cl]Cl₂

---

Question 21.
The absorption maxima of several octahedral complex ions are as follows:

The crystal field splitting is maximum for:
(a) [CO(H₂O)₆]³⁺
(b) [CO(CN)₆]^3-
(c) (CO(NH₃)₆]³⁺
(d) All the complex ions have the same splitting, Δ₀.

Answer

Answer: (b) [CO(CN)₆]^3-

---

Assertion and Reason Type Questions

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.

Question 22.
Assertion: The complex [Co(NH₃)₃Cl₃] does not give precipitate with silver nitrate solution.
Reason: The given complex is non-ionizable.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 23.
Assertion: The complex ion trans [Co(en)₂Cl₂]⁺ is optically active.
Reason: It is an octahedral complex.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 24.
Assertion: NF₃ is weaker ligand than N(CH₃)₃.
Reason: NF₃ ionises to give F^– ions in aqueous solution.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 25.
Assertion: The [Ni(en)₃]Cl₂ (en = ethylenediamine) has lower stability than [Ni(NH₃)₆]Cl₂.
Reason: In [Ni(en)₃]Cl₂, the geometry of Ni is trigonal bipyramidal.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Question 26.
Assertion: [Ni(CO)₄] is diamagnetic and tetrahedral in shape.
Reason: [Ni(CO)₄] contains no unpaired electron and involves dsp² hybridisation.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 27.
Assertion: The ligands -NO₂^– and ONO^– are ambident in nature.
Reason: They form linkage isomers.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 28.
Assertion: The complex [Fe(CN)₆]^4- is diamagnetic though iron (II) has 3d₆ configuration.
Reason: CN^– is a strong ligand and has the configuration: t_2g⁶. Therefore, it has no unpaired electrons.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 29.
Assertion: The oxidation state of Pt in Zeise salt is 0.
Reason: Zeise salt is non-ionic complex.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 30.
Assertion: Optical isomerism is not shown by square planar complexes.
Reason: Square planar complexes do not have chiral structures.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 31.
Assertion: Tetrahedral complexes do not show geometrical isomerism.
Reason: Bond angle in tetrahedral geometry is 109.5°.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 32.
Assertion: [Ni(CO)₄] is diamagnetic complex.
Reason: It involves sp³ hybridisation and there is no unpaired electron.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 33.
Assertion: The complex [Co(NH₃)₄Cl₂]Cl gives precipitates corresponding to 2 mol of AgCl with AgNO₃ solutions.
Reason: It ionises as [Co(NH₃)₄Cl₂]⁺ + Cl^–.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Hope the information shared regarding the NCERT MCQ Questions for Class 12 Chemistry Chapter 9 Coordination Compounds with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 12 Chemistry Coordination Compounds MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Haloalkanes and Haloarenes Class 12 MCQs Questions with Answers and assess their preparation level.

Haloalkanes and Haloarenes Class 12 MCQs Questions with Answers

Solving the Haloalkanes and Haloarenes Multiple Choice Questions of Class 12 Chemistry Chapter 10 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Haloalkanes and Haloarenes Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 10 Chemistry Class 12 and cross-check your answers during preparation.

Question 1.
The order of reactivity of the following alcohols with halogen acids is
(a) CH₃CH₂-CH₂-OH

(a) (a) > (b) > (c)
(b) (c) > (b) > (a)
(c) (b) > (a) > (c)
(d) (a) > (c) > (b)

Answer

Answer: (b) (c) > (b) > (a)

---

Question 2.
Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCI at room temperature?
(a) CH₃CH₂-CH₂-OH

Answer

Answer:

---

Question 3.
Identify the compound Y in the following reaction.

Answer

Answer:

---

Question 4.
Toluene reacts with a halogen in the presence of iron (iii) chloride giving ortho and para halo compounds. The reaction is
(a) Electrophilic elimination reaction
(b) Electrophilic substitution reaction
(c) Free radical addition reaction
(d) Nucleophilic substitution reaction

Answer

Answer: (b) Electrophilic substitution reaction

---

Question 5.
Which of the following is halogen exchange reaction?
(a) RX + Nal → Rl + NaX

Answer

Answer: (a) RX + Nal → Rl + NaX

---

Question 6.
Which reagent will you use for the following reaction?
CH₃CH₂CH₂CH₃ →CH₃CH₂CH₂CH₂Cl + CH₃CH₂CHClCH₃
(a) Cl₂/UV light
(b) NaCl + H₂SO₄
(c) Cl₂ gas in dark
(d) Cl₂ gas in the presence of iron in dark

Answer

Answer: (a) Cl₂/UV light

---

Question 7.
Arrange the following compounds in the increasing order of their densities.

(a) (i) < (ii) < (iii) < (iv)
(b) (i) < (iii) < (iv) < (ii)
(c) (iv) < (iii) < (ii) < (i)
(d) (ii) < (iv) < (iii) < (i)

Answer

Answer: (a) (i) < (ii) < (iii) < (iv)

---

Question 8.
Arrange the following compounds in increasing order of their boiling points.

(a) (ii) < (i) < (iii)
(b) (i) < (ii) < (iii)
(c) (iii) < (i) < (ii)
(d) (iii) < (ii) < (i)

Answer

Answer: (c) (iii) < (i) < (ii)

---

Question 9.
In which of the following molecules carbon atom marked with asterisk (*) is asymmetric?

(a) (i), (ii), (iii), (iv)
(b) (i), (iii), (iii)
(c) (ii), (iii), (iv)
(d) (i), (iii), (iv)

Answer

Answer: (b) (i), (iii), (iii)

---

Question 10.
Which of the following structures is enantiomeric with the molecule (A) given below?

Answer

Answer:

---

Question 11.
Which of the following is an example of vic-dihalide?
(a) Dichloromethane
(b) 1,2-dichloroethane
(c) Ethylidene chloride
(d) Ally l chloride

Answer

Answer: (b) 1,2-dichloroethane

---

Question 12.
The position of -Br in the compound in CH₃CH=CHC(Br)(CH₃)₂ can be classified as
(a) Allyl
(b) Aryl
(c) Vinyl
(d) Secondary

Answer

Answer: (a) Allyl

---

Question 13.
Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl₃. Which of the following species attacks the benzene ring in this reaction?
(a) cl^–
(b) cl⁺
(c) AlCl₃
(d) [AlCl₄]^–

Answer

Answer: (b) cl⁺

---

Question 14.
Ethylidene chloride is a/an
(a) vic-dihalide
(b) gem-dihalide
(c) allylic halide
(d) vinylic halide

Answer

Answer: (b) gem-dihalide

---

Question 15.
What is ‘A’ in the following reaction?

Answer

Answer:

---

Question 16.
A primary alkyl halide would prefer to undergo
(a) S_N1 reaction
(b) S_N2 reaction
(c) α-Elimination
(d) Racemisation

Answer

Answer: (b) S_N2 reaction

---

Question 17.
Which of the following alkyl halides will undergo S_N1 reaction most readily?
(a) (CH₃)₃C-F
(b) (CH₃)₃C-Cl
(c) (CH₃)₃C-Br
(d) (CH₃)₃C-I

Answer

Answer: (d) (CH₃)₃C-I

---

Question 18.
Which is the correct IUPAC name for

(a) 1-Bromo-2-ethylpropane
(b) 1 -Bromo-2-ethyl-2-methylethane
(c) 1-Bromo-2-methylbutane
(d) 2-Methyl-1-bromobutane

Answer

Answer: (c) 1-Bromo-2-methylbutane

---

Question 19.
What should be the correct IUPAC name for diethylbromomethane?
(a) 1-Bromo-1,1-diethylmethane
(b) 3-Bromopentane
(c) 1-Bromo-1-ethylpropane
(d) 1-Bromopentane

Answer

Answer: (b) 3-Bromopentane

---

Question 20.
The reaction of toluene with chlorine in the presence of iron and in the absence of light yields

(d) Mixture of (b) and (c)

Answer

Answer: (d) Mixture of (b) and (c)

---

Question 21.
Chloromethane on treatment with excess of ammonia yields mainly
(a) N, N-Dimethylmethanamine

(b) N-methylmethanamine (CH₃-NH-CH₃)
(c) Methanamine (CH₃NH₂)
(d) Mixture containing all these in equal proportion

Answer

Answer: (c) Methanamine (CH₃NH₂)

---

Question 22.
Molecules whose mirror image is non- superimposable over them are known as chiral. Which of the following molecules is chiral in nature?
(a) 2-Bromobutane
(b) 1 -Bromobutane
(c) 2-Bromopropane
(d) 2-Bromopropan-2-ol

Answer

Answer: (a) 2-Bromobutane

---

Question 23.
Reaction of C₆H₅CH₂Br with aqueous sodium hydroxide follows
(a) S_N1 mechanism
(b) S_N2 mechanism
(c) Any of the above two depending upon the temperature of reaction
(d) Saytzeff rule

Answer

Answer: (a) S_N1 mechanism

---

Question 24.
Which of the carbon atoms present in the molecule given below are asymmetric?

(a) a, b, c, d
(b) b, c
(c) a, d
(d) a, b, c

Answer

Answer: (b) b, c

---

Question 25.
The IUPAC name of the compound shown below is:

(a) 2-bromo-6-chlorocyclohex-1 -ene
(b) 6-bromo-2-chlorocyclohexene
(c) 3-bromo-1-chlorocyclohexene
(d) 1 -bromo-3-chlorocyclohexene

Answer

Answer: (c) 3-bromo-1-chlorocyclohexene

---

Assertion and Reason Type Questions

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.

Question 26.
Assertion: Addition of Br₂ to but-1-ene gives two optical isomers.
Reason: The product contains one asymmetric carbon atom.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 27.
Assertion: S_N2 reaction proceeds with inversion of configuration.
Reason: S_N2 reactions occur in one step.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 28.
Assertion: Addition of Br₂ to trans-2- butene yields meso-2, 3-dibromobutane.
Reason: Bromine addition to an alkene is an electrophilic addition reaction.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 29.
Assertion: Benzyl bromide when kept in acetone-water, it produces benzyl alcohol.
Reason: The reaction follows S_N2 mechanism.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 30.
Assertion: The nucleophilic substitution of vinyl chloride is difficult than ethyl chloride.
Reason: Vinyl group is electron donating group.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 31.
Assertion: tert-butyl bromide undergoes S_N1 nucleophilic substitution readily than n-butyl bromide.
Reason: It proceeds by the formation of stable carbocation.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 32.
Assertion: Ethanol gives iodoform test while methanol does not.
Reason: Ethanol is less reactive than methanol towards nucleophilic addition reactions.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 33.
Assertion: Treatment of chloroethane with a saturated solution of AgCN gives ethyl isocyanide as the major product.
Reason: Cyanide ion (:CN ) is an ambident nucleophile.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 34.
Assertion: 2-Bromobutane on reaction with sodium ethoxide in ethanol gives 1-butene as the major product.
Reason: 1-Butene is less stable than 2-butene.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Question 35.
Assertion: Alkyl iodide can be prepared by treating alkyl chloride/bromide with Nal in acetone.
Reason: NaCl and NaBr are soluble in acetone but Nal is not.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 36.
Assertion: Aryl halides undergo nucleophilic substitution reactions with ease.
Reason: The carbon halogen bond in aryl halides has partial double bond character.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Hope the information shared regarding the NCERT MCQ Questions for Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 12 Chemistry Haloalkanes and Haloarenes MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Alcohols, Phenols and Ethers Class 12 MCQs Questions with Answers and assess their preparation level.

Alcohols, Phenols and Ethers Class 12 MCQs Questions with Answers

Solving the Alcohols, Phenols and Ethers Multiple Choice Questions of Class 12 Chemistry Chapter 11 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Alcohols, Phenols and Ethers Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 11 Chemistry Class 12 and cross-check your answers during preparation.

Question 1.
Dehydration of tertiary alcohols with Cu at 573 gives
(a) Aldehydes
(b) Ketones
(c) Alkenes
(d) None of these

Answer

Answer: (c) Alkenes

---

Question 2.
Molecular formula of ethers is:
(a) C_nH_2n+2O
(b) C_nH_2nO
(c) C_nH_2n+1O
(d) None of these

Answer

Answer: (a) C_nH_2n+2O

---

Question 3.
Williamson’s synthesis is an example of:
(a) Nucleophilic substitution reaction
(b) Nucleophilic addition
(c) Electrophilic substitution
(d) None of the above

Answer

Answer: (a) Nucleophilic substitution reaction

---

Question 4.
Reaction used for the preparation of ethers is
(a) Reimer-Tiemann reaction
(b) Williamson’s synthesis
(c) Wurtz reaction
(d) Cannizzaro reaction

Answer

Answer: (b) Williamson’s synthesis

---

Question 5.
The test used to distinguish alcohols from one another is known as
(a) Hinsberg’s test
(b) 2, 4-DNP test
(c) Iodoform test
(d) Lucas Lest

Answer

Answer: (d) Lucas Lest

---

Question 6.
The IUPAC name of

(a) Propane-1, 3-diol
(b) Propane-1, 2-diol
(c) Propane -1, 2, 3-triol
(d) Glycerol

Answer

Answer: (c) Propane -1, 2, 3-triol

---

Question 7.
Ethers on hydrolysis give
(a) carboxylic acid
(b) alcohol
(c) ester
(d) ketone

Answer

Answer: (b) alcohol

---

Question 8.
Which of the following has highest boiling point?
(a) Methanol
(b) Ethanol
(c) Propan-1 -ol
(d) Butan-1-ol

Answer

Answer: (d) Butan-1-ol

---

Question 9.
Which has highest value of pK_a?
(a) Phenol
(b) Ethanol
(c) o-Nitrophenol
(d) o-Cresol

Answer

Answer: (b) Ethanol

---

Question 10.
Which of the following is most acidic?
(a) Benzyl alcohol
(b) Cyclohexanol
(c) Phenol
(d) m-Chlorophenol.

Answer

Answer: (d) m-Chlorophenol.

---

Question 11.
Phenols on reaction with cone. HNO₃ in the presence of cone. H₂SO₄ give
(a) o-nitrophenol
(b) m-nitrophenol
(c) p-nitrophenol
(d) 2,4,6-trinitrophenol.

Answer

Answer: (d) 2,4,6-trinitrophenol.

---

Question 12.
Methanol and ethanol can be distinguished by using
(a) Fehling’s test
(b) Iodoform test
(c) Tollen’s test
(d) Carbylamine test.

Answer

Answer: (b) Iodoform test

---

Question 13.
The IUPAC name of the compound

(a) 2-Chloro-3,4-dimethyl-n-pentyl alcohol
(b) 2-Chloro-3,4-dimethylpentan-5-ol
(c) 4-Chloro-2,3-dimethylpentan-1 -ol
(d) 2,3-Dimethyl-4-chloropentan-1 -ol.

Answer

Answer: (c) 4-Chloro-2,3-dimethylpentan-1 -ol

---

Question 14.

A will be
(a) CH₂=CH₂
(b) C₂H₅OCH₃
(c) (C₂H₅)₂O
(d) CH₃CH₂CH₂CH₃

Answer

Answer: (c) (C₂H₅)₂O

---

Question 15.
Which is weakest acid in the following?
(a) CH₃OH
(b) (CH₃)₂CHOH
(c) CH₃CH₂OH
(d) (CH₃)₃COH

Answer

Answer: (a) CH₃OH

---

Question 16.
Williamson synthesis is used to prepare:
(a) Alcohol
(b) Amine
(c) Ketone
(d) Ether

Answer

Answer: (d) Ether

---

Question 17.
In the reaction

A and B are:
(a) C₆H₅l, CH₃OH
(b) C₆H₅OH, CH₃l
(c) C₆H₅CH₂OH, CH₃l
(d) CH₃CH₂l, C₆H₅OH

Answer

Answer: (b) C₆H₅OH, CH₃l

---

Question 18.
The IUPAC name of

(a) 2-Cyclopropoxybutane
(b) 2-Propoxybutane
(c) 2-Propoxypropane
(d) 2-Methyl-2-propoxypropane

Answer

Answer: (a) 2-Cyclopropoxybutane

---

Question 19.
Neutral ferric chloride test can be used to distinguish between
(a) Alcohols and ethers
(b) Aldehydes and ketones
(c) Amines and aldehyde
(d) Phenols and alcohols

Answer

Answer: (d) Phenols and alcohols

---

Question 20.
On reaction with aqueous bromine at room temperature, phenol forms which of the following?
(a) meta-Bromophenol
(b) 2, 6-Dibromophenol
(c) 2, 4, 6-Tribromophenol
(d) 3, 5-Dibromophenol

Answer

Answer: (c) 2, 4, 6-Tribromophenol

---

Question 21.
How many alcohols with molecular formula C₄H₁₀O are chiral in nature?
(a) 1
(b) 2
(c) 3
(d) 4

Answer

Answer: (a) 1

---

Question 22.
What is the correct order of reactivity of alcohols in the following reaction?

(a) 1° > 2° > 3°
(b) 1° < 2° > 3°
(c) 3° > 2° > 1°
(d) 3° > 1° > 2°

Answer

Answer: (c) 3° > 2° > 1°

---

Question 23.
CH₃CH₂OH can be converted into CH₃CHO by
(а) catalytic hydrogenation
(b) treatment with LiAlH₄
(c) treatment with pyridinium chlorochromate
(d) treatment with KMnO₄

Answer

Answer: (c) treatment with pyridinium chlorochromate

---

Question 24.
The process of converting alkyl halides into alcohols involves
(a) addition reaction
(b) substitution reaction
(c) dehydrohalogenation reaction
(d) rearrangement reaction

Answer

Answer: (b) substitution reaction

---

Question 25.
Which of the following compounds is aromatic alcohol?

(a) A, B, C, D
(b) A, D
(c) B, C
(d) A

Answer

Answer: (c) B, C

---

Question 26.
Give IUPAC name of the compound given below.

(a) 2-Chloro-5-hydroxyhexane
(b) 2-Hydroxy-5-chlorohexane
(c) 5-Chlorohexan-2-ol
(d) 2-Chlorohexan-5-ol

Answer

Answer: (c) 5-Chlorohexan-2-ol

---

Question 27.
IUPAC name of m-cresol is
(a) 3-methylphenol
(b) 3-chlorophenol
(c) 3-methoxyphenol
(d) benzene-1,3-diol

Answer

Answer: (a) 3-methylphenol

---

Question 28.
IUPAC name of the compound

(a) 1-methoxy-1-methylethane
(b) 2-methoxy-2-methylethane
(c) 2-methoxypropane
(d) isopropylmethyl ether

Answer

Answer: (c) 2-methoxypropane

---

Question 29.
Which of the following species can act as the strongest base?
(a) ^ΘOH
(b) ^ΘOR
(c) ^ΘOC₆H₅

Answer

Answer: (b) ^ΘOR

---

Question 30.
Which of the following compounds will react with sodium hydroxide solution in water?
(a) C₆H₅OH
(b) C₆H₅CH₂OH
(c) (CH₃)₃COH
(d) C₂H₅OH

Answer

Answer: (a) C₆H₅OH

---

Question 31.
Phenol is less acidic than
(a) ethanol
(b) o-nitrophenol
(c) o-methylphenol
(d) o-methoxyphenol

Answer

Answer: (d) o-methoxyphenol

---

Question 32.
Which of the following is most acidic?
(a) Benzyl alcohol
(b) Cyclohexanol
(c) Phenol
(d) m-Chlorophenol

Answer

Answer: (d) m-Chlorophenol

---

Question 33.
Mark the correct order of decreasing acid strength of the following compounds.

(a) E>D>B>A>C
(b) B>D>A>C>E
(c) D>E>C>B>A
(d) E>D>C>B>A

Answer

Answer: (b) B>D>A>C>E

---

Question 34.
Mark the correct increasing order of reactivity of the following compounds with

(a) (i) < (ii) < (iii)
(b) (ii) < (i) < (iii)
(c) (ii) < (iii) < (i)
(d) (iii) < (ii) < (i)

Answer

Answer: (c) (ii) < (iii) < (i)

---

Question 35.
Arrange the following compounds in increasing order of boiling point.
Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol
(a) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol
(b) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol
(c) Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1 -ol
(d) Pentan-1-ol, butan-1-ol, butan-2-ol, propan-1 -ol

Answer

Answer: (a) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol

---

Assertion and Reason Type Questions

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.

Question 36.
Assertion: C₂H₅OH is a weaker base than phenol but is a stronger nucleophile than phenol.
Reason: In phenol the lone pair of electrons on oxygen is withdrawn towards the ring due to resonance.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Question 37.
Assertion: The boiling points of alcohols are higher than those of hydrocarbons of comparable molecular mass.
Reason: Alcohols show intramolecular hydrogen bonding.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 38.
Assertion: Phenol undergoes Kolbe’s reaction but ethanol does not.
Reason: Phenol is more acidic than ethanol.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 39.
Assertion: The C-O-C bond angle in ethers is higher than H-O-H bond angle in water.
Reason: Oxygen in both ethers and water is sp³ hybridised.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 40.
Assertion: The boiling point of diethyl ether is much less than that of ethanol.
Reason: In ethanol, the molecules are associated by the formation of intermolecular hydrogen bonding, whereas in diethyl ether, it is not possible.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 41.
Assertion: Alcohols have higher boiling points than ethers of comparable molecular masses.
Reason: Alcohols and ethers are isomeric compounds.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 42.
Assertion: o- and p-nitrophenols can be separated by steam distillation.
Reason: o-isomer is steam volatile due to chelation, while p-isomer is not steam volatile due to association of molecules by intermolecular H-bonding.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Hope the information shared regarding the NCERT MCQ Questions for Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 12 Chemistry Alcohols, Phenols and Ethers MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 12 Aldehydes, Ketones and Carboxylic Acids with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Aldehydes, Ketones and Carboxylic Acids Class 12 MCQs Questions with Answers and assess their preparation level.

Aldehydes, Ketones and Carboxylic Acids Class 12 MCQs Questions with Answers

Solving the Aldehydes, Ketones and Carboxylic Acids Multiple Choice Questions of Class 12 Chemistry Chapter 12 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Aldehydes, Ketones and Carboxylic Acids Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 12 Chemistry Class 12 and cross-check your answers during preparation.

Question 1.
Addition of water to alkynes occurs in acidic medium and in the presence of Hg²⁺ ions as a catalyst. Which of the following products will be formed on addition of water to but-1 -yne under these conditions?

Answer

Answer:

---

Question 2.
Which of the following compounds is most reactive towards nucleophilic addition reactions?

Answer

Answer:

---

Question 3.
The correct order of increasing acidic strength is
(a) Phenol < Ethanol < Chloroacetic acid < Acetic acid
(b) Ethanol < Phenol < Chloroacetic acid < Acetic acid
(c) Ethanol < Phenol < Acetic acid < Chloroacetic acid
(d) Chloroacetic acid < Acetic acid < Phenol < Ethanol

Answer

Answer: (c) Ethanol < Phenol < Acetic acid < Chloroacetic acid

---

Question 4.
Compound can be prepared by the reaction of
(a) Phenol and benzoic acid in the presence of NaOH
(b) Phenol and benzoyl chloride in the presence of pyridine
(c) Phenol and benzoyl chloride in the presence of ZnCl₂
(d) Phenol and benzaldehyde in the presence of palladium

Answer

Answer: (b) Phenol and benzoyl chloride in the presence of pyridine

---

Question 5.
The reagent which does not react with both, acetone and benzaldehyde.
(a) Sodium hydrogensulphite
(b) Phenyl hydrazine
(c) Fehling’s solution
(d) Grignard reagent

Answer

Answer: (c) Fehling’s solution

---

Question 6.
Cannizzaro’s reaction is not given by

(c) HCHO
(d) CH₃CHO

Answer

Answer: (d) CH₃CHO

---

Question 7.
Which product is formed when the compound is treated with concentrated aqueous KOH solution?

Answer

Answer:

---

Question 8.

Structure of ‘A’ and type of isomerism in the above reaction are respectively.
(a) Prop-1-en-2-ol, metamerism
(b) Prop-1 -en-1 -ol, tautomerism
(c) Prop-2-en-2-ol, geometrical isomerism
(d) Prop-1-en-2-ol, tautomerism

Answer

Answer: (d) Prop-1-en-2-ol, tautomerism

---

Question 9.
Compounds A and C in the following reaction are

(a) identical
(b) positional isomers
(c) functional isomers
(d) optical isomers

Answer

Answer: (b) positional isomers

---

Question 10.
Which is the most suitable reagent for the following conversion?

(a) Tollen’s reagent
(b) Benzoyl peroxide
(c) l₂ and NaOH solution
(d) Sn and NaOH solution

Answer

Answer: (c) l₂ and NaOH solution

---

Question 11.
Which of the following compounds wilt give butanone on oxidation with alkaline KMnO₄ solution?
(a) Butan-1-ol
(b) Butan-2-ol
(c) Both of these
(d) None of these

Answer

Answer: (b) Butan-2-ol

---

Question 12.
In Clemmensen Reduction carbonyl compound is treated with
(a) Zinc amalgam + HCl
(b) Sodium amalgam + HCl
(c) Zinc amalgam + nitric add
(d) Sodium amalgam + HNO₃

Answer

Answer: (a) Zinc amalgam + HCl

---

Assertion and Reason Type Questions

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.

Question 13.
Assertion: Formaldehyde is a planar molecule.
Reason: It contains sp² hybridised carbon atom.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 14.
Assertion: Compounds containing -CHO group are easily oxidised to corresponding carboxylic acids.
Reason: Carboxylic acids can be reduced to alcohols by treatment with LiAlH₄.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 15.
Assertion: The a-hydrogen atom in carbonyl compounds is less acidic.
Reason: The anion formed after the loss of α-hydrogen atom is resonance stabilised.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Question 16.
Assertion: Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction.
Reason: Aromatic aldehydes are almost as reactive as formaldehyde.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 17.
Assertion: Aldehydes and ketones, both react with Tollen’s reagent to form silver mirror.
Reason: Both, aldehydes and ketones contain a carbonyl group.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

---

Hope the information shared regarding the NCERT MCQ Questions for Class 12 Chemistry Chapter 12 Aldehydes, Ketones and Carboxylic Acids with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 12 Chemistry Aldehydes, Ketones and Carboxylic Acids MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 13 Amines with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Amines Class 12 MCQs Questions with Answers and assess their preparation level.

Amines Class 12 MCQs Questions with Answers

Solving the Amines Multiple Choice Questions of Class 12 Chemistry Chapter 13 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Amines Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 13 Chemistry Class 12 and cross-check your answers during preparation.

Question 1.
When a primary amine reacts with chloroform in ethanolic KOH, then the product is
(a) isocyanide
(b) aldehyde
(c) cyanide
(d) alcohol

Answer

Answer: (a) isocyanide

---

Question 2.
Which of the following does not react with Hinsberg reagent?
(a) C₂H₅NH₂
(b) (C₂H₅)₂NH
(c) (C₂H₅)₃N
(d) CH₃NH₂

Answer

Answer: (c) (C₂H₅)₃N

---

Question 3.
C₆H₅N₂Cl + CuCN → C₆H₅CN + N₂ + CuCl is
(a) Balz-Schiemann
(b) Gattermann reaction
(c) Simonini reaction
(d) Sandmeyer reaction

Answer

Answer: (d) Sandmeyer reaction

---

Question 4.
Which of the following is most basic?
(a) Benzylamine
(b) Aniline
(c) Acetanilide
(d) p-nitroaniline

Answer

Answer: (a) Benzylamine

---

Question 5.
Among the following which one is strongest base?
(a) Ammonia
(b) Methylamine
(c) Ethylamine
(d) None of these

Answer

Answer: (c) Ethylamine

---

Question 6.
Which of the following compound is the most basic?

Answer

Answer:

---

Question 7.
The IUPAC name of is
(a) N-Ethyl- N-methylbenzenamine
(b) N-Methyl- N-ethylbenzenamine
(c) N, N-Ethyl methyl benzenamine
(d) N, N-Methyl ethyl benzenamine

Answer

Answer: (a) N-Ethyl- N-methylbenzenamine

---

Question 8.
Gabriel phthalimide reaction is used for the preparation of
(a) 1° amine
(b) 2° amine
(c) 3° amine
(d) all of these

Answer

Answer: (a) 1° amine

---

Question 9.
Which of the following compound will be formed when aniline reacts with H₂SO₄?

Answer

Answer:

---

Question 10.
Which one of the following is most basic?
(a) C₆H₅NH₂
(b) NH₃
(c) CH₃CH₂NH₂
(d) CH₃NH₂

Answer

Answer: (c) CH₃CH₂NH₂

---

Question 11.
C₂H₅NH₂ + HNO₂ → A, A is:
(a) C₆H₅OH
(b) C₂H₅NHOH
(c) C₂H₆
(d) C₂H₅NO₂

Answer

Answer: (a) C₆H₅OH

---

Question 12.

(a) Benzoic acid
(b) Aniline
(c) Benzonitrile
(d) Benzylamine

Answer

Answer: (a) Benzoic acid

---

Question 13.
CH₃C ≡ p will be?
(a) CH₃CH₂NC
(b) CH₃CH₂NH₂
(c) CH₃NHCH₃
(d) CH₃NH₂

Answer

Answer: (b) CH₃CH₂NH₂

---

Question 14.
Which of the following compound gives dye test?
(a) Aniline
(b) Methylamine
(c) Diphenylamine
(d) Ethylamine

Answer

Answer: (a) Aniline

---

Question 15.
Gabriel phthalimide reaction is used for the preparation of
(a) primary aromatic amines
(b) secondary amines
(c) aliphatic primary amines
(d) tertiary amines

Answer

Answer: (c) aliphatic primary amines

---

Question 16.
The IUPAC name of the compound

(a) 2-Amino-4-ethyl-2-hydroxypent-4-ene
(b) 2-Amino – 4 – ethylpent – 4 – en – 2 – ol
(c) 4-Ethyl – 2 – hydroxypent -4-en – 2 – amine
(d) 2-Amino – 4 – methylhexan – 2 -ol

Answer

Answer: (b) 2-Amino – 4 – ethylpent – 4 – en – 2 – ol

---

Assertion and Reason Type Questions

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.

Question 17.
Assertion: Acylation of amines gives a monosubstituted product whereas alkylation of amines gives polysubstituted product.
Reason: Acyl group sterically hinders the approach of further acyl groups.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 18.
Assertion: Hoffmann’s bromamide reaction is given by primary amines.
Reason: Primary amines are more basic than secondary amines.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 19.
Assertion: N-Ethylbenzene sulphonamide is soluble in alkali.
Reason: Hydrogen attached to nitrogen in sulphonamide is strongly acidic.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 20.
Assertion: N, N-Diethylbenzene sulphonamide is insoluble in alkali.
Reason: Sulphonyl group attached to nitrogen atom is strong electron withdrawing group.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

---

Question 21.
Assertion: Only a small amount of HCl is required in the reduction of nitro compounds with iron scrap and HCl in the presence of steam.
Reason: FeCl₂ formed gets hydrolysed to release HCl during the reaction.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Question 22.
Assertion: Aliphatic 1° amines can be prepared by Gabriel phthalimide synthesis.
Reason: Aryl halides undergo nucleophilic substitution with anion formed by phthalimide.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

---

Question 23.
Assertion: Acetanilide is less basic than aniline.
Reason: Acetylation of aniline results in decrease of electron density on nitrogen.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

---

Hope the information shared regarding the NCERT MCQ Questions for Class 12 Chemistry Chapter 13 Amines with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 12 Chemistry Amines MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.

Students are advised to practice the NCERT MCQ Questions for Class 12 Chemistry Chapter 14 Biomolecules with Answers Pdf free download is available here. MCQ Questions for Class 12 Chemistry with Answers are prepared as per the Latest Exam Pattern. Students can solve these Biomolecules Class 12 MCQs Questions with Answers and assess their preparation level.

Biomolecules Class 12 MCQs Questions with Answers

Solving the Biomolecules Multiple Choice Questions of Class 12 Chemistry Chapter 14 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Biomolecules Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 14 Chemistry Class 12 and cross-check your answers during preparation.

Question 1.
The linkage which holds various amino acid units in primary structure of proteins is
(a) glycosidic linkage
(b) hydrogen bond
(c) peptide linkage
(d) ionic bond

Answer

Answer: (c) peptide linkage

---

Question 2.
Vitamin A is called
(a) Ascorbic acid
(b) Retinol
(c) Calciferol
(d) Tocoferol

Answer

Answer: (b) Retinol

---

Question 3.
The deficiency of vitamin B₁ causes which disease?
(a) Beriberi
(b) Rickets
(c) Anaemia
(d) Xerosis

Answer

Answer: (a) Beriberi

---

Question 4.
Deficiency of vitamin C causes
(a) Scurvy
(b) Rickets
(c) Anaemia
(d) None of these

Answer

Answer: (a) Scurvy

---

Question 5.
An example of non-reducing sugar is
(a) Sucrose
(b) Lactose
(c) Maltose
(d) None

Answer

Answer: (a) Sucrose

---

Question 6.
Which of the following is not an essential amino acid?
(a) Glycine
(b) Lysine
(c) Phenyl alanine
(d) Valine

Answer

Answer: (a) Glycine

---

Question 7.
Which of the following is a water-soluble vitamin?
(a) Vitamin E
(b) Vitamin K
(c) Vitamin B
(d) Vitamin A

Answer

Answer: (c) Vitamin B

---

Question 8.
Vitamin B₁ is
(a) Riboflavin
(b) Cobalamin
(c) Thiamine
(d) Pyridoxine

Answer

Answer: (c) Thiamine

---

Question 9.
Which is sweetest of the following:
(a) Sucrose
(b) Glucose
(c) Fructose
(d) Maltose

Answer

Answer: (c) Fructose

---

Question 10.
Rickets may be caused by the deficiency of which vitamin?
(a) Vitamin D
(b) Vitamin C
(c) Vitamin A
(d) Vitamin B

Answer

Answer: (a) Vitamin D

---

Question 11.
The function of enzymes in the living system is to
(a) Maintain pH
(b) Catalyse biochemical process
(c) provide immunity
(d) transport oxygen

Answer

Answer: (b) Catalyse biochemical process

---

Question 12.
The disaccharide present in milk is
(a) sucrose
(b) maltose
(c) lactose
(d) cellulose

Answer

Answer: (c) lactose

---

Question 13.
Which base is present in RNA but not in DNA?
(a) Uracil
(b) Cytosine
(c) Guanine
(d) Thymine

Answer

Answer: (a) Uracil

---

Question 14.
In aqueous solution, an amino acid exists as
(a) cation
(b) anion
(c) dianion
(d) zwitterion

Answer

Answer: (d) zwitterion

---

Question 15.
Which of the following is stored in liver of animals?
(a) Amylose
(b) Cellulose
(c) Amylopectin
(d) Glycogen

Answer

Answer: (d) Glycogen

---

Question 16.
Which of the following is a polysaccharide?
(a) Maltose
(b) Sucrose
(c) Fructose
(d) Cellulose

Answer

Answer: (d) Cellulose

---

Question 17.
The Vitamin responsible for the coagulation of blood is:
(a) Vitamin B₁
(b) Vitamin D
(c) Vitamin K
(d) Vitamin C

Answer

Answer: (c) Vitamin K

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Question 18.
Which one is the complimentary base of adenine in one strand to that in the other strand of DNA?
(a) Cytosine
(b) Guanine
(c) Uracil
(d) Thymine

Answer

Answer: (d) Thymine

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Question 19.
Ribose is a
(a) monosaccharide
(b) polysaccharide
(c) polypeptide
(d) disaccharide

Answer

Answer: (a) monosaccharide

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Question 20.
In which of the following order base, phosphate and sugar are arranged in the nucleotide of DNA?
(a) Base-phosphate-sugar
(b) Base-sugar-phosphate
(c) Phosphate-base-sugar
(d) Sugar-base-phosphate

Answer

Answer: (b) Base-sugar-phosphate

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Assertion and Reason Type Questions

The questions given below consist of an assertion and a reason. Use the following key to choose the appropriate answer.
(a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
(c) Assertion (A) is correct, Reason (R) is wrong statement.
(d) Assertion (A) is wrong, but Reason (R) is correct statement.

Question 21.
Assertion: D (+) – Glucose is dextrorotatory in nature.
Reason: ‘D’ represents its dextrorotatory nature.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

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Question 22.
Assertion: Vitamin D can be stored in our body.
Reason: Vitamin D is fat-soluble vitamin.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

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Question 23.
Assertion: ß-glycosidic linkage is present in maltose,

Reason: Maltose is composed of two glucose units in which C-1 of one glucose unit is linked to C-4 of another glucose unit.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

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Question 24.
Assertion: All naturally occurring α-aminoacids except glycine are optically active.
Reason: Most naturally occurring amino acids have L-configuration.

Answer

Answer: (b) Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

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Question 25.
Assertion: Deoxyribose, C₅H₁₀O₄ is a carbohydrate.
Reason: Carbohydrates are hydrates of carbon so compounds which follow C_x(H₂O)_y formula are carbohydrates.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

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Question 26.
Assertion: Glycine must be taken through diet.
Reason: It is a non-essential amino acid.

Answer

Answer: (d) Assertion (A) is wrong, but Reason (R) is correct statement.

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Question 27.
Assertion: In the presence of enzyme, substrate molecule can be attacked by the reagent effectively.
Reason: Active sites of enzymes hold the substrate molecule in a suitable position.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

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Question 28.
Assertion: The two strands in double strand helix structure of DNA are complementary to each other.
Reason: Disulphide bonds are formed between specific pairs of bases.

Answer

Answer: (c) Assertion (A) is correct, Reason (R) is wrong statement.

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Question 29.
Assertion: Glucose reacts with hydroxylamine to form an oxime and also adds a molecule of hydrogen cyanide to give cyanohydrin.
Reason: The carbonyl group is present in the open chain structure of glucose.

Answer

Answer: (a) Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

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