MCQ Questions for Class 8 Science with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Materials: Metals and Non-Metals Class 8 MCQs Questions with Answers and assess their preparation level.<\/p>\nMaterials: Metals and Non-Metals Class 8 MCQs Questions with Answers<\/h2>\n
Solving the Materials: Metals and Non-Metals Multiple Choice Questions of Class 8 Science Chapter 4 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Materials: Metals and Non-Metals Class 8 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 4 Science Class 8 and cross-check your answers during preparation.<\/p>\n
Question 1.
\nThe metal having fastest rate of formation of bubbles of hydrogen with dil. HCl is
\n(a) zinc
\n(b) copper
\n(c) magnesium
\n(d) silver<\/p>\n\nAnswer<\/span><\/summary>\n(c) magnesium
\nMagnesium is higher in reactivity series therefore the rate of formation of bubbles of hydrogen with dil HC1 is fastest.<\/p>\n<\/details>\n
\nQuestion 2.
\nThe non-metal which has very high melting point is:
\n(a) sulphur
\n(b) iodine
\n(c) phosphorus
\n(d) graphite<\/p>\n\nAnswer<\/span><\/summary>\n(d) graphite
\nGraphite is a non-metal having very high melting point.<\/p>\n<\/details>\n
\nQuestion 3.
\nThe non-metal which is good conductor of electricity is:
\n(a) sulphur
\n(b) iodine
\n(c) phosphorus
\n(d) graphite<\/p>\n\nAnswer<\/span><\/summary>\n(d) graphite
\nGraphite is the only non-metal which is a good conductor of electricity.<\/p>\n<\/details>\n
\nQuestion 4.
\nThe non-metal which is liquid at room temperature is:
\n(a) chlorine
\n(b) bromine
\n(c) iodine
\n(d) carbon<\/p>\n\nAnswer<\/span><\/summary>\n(b) bromine
\nBromine is the non-metal which is liquid at room temperature.<\/p>\n<\/details>\n
\nQuestion 5.
\nThe colour of chlorine is:
\n(a) yellow
\n(b) white
\n(c) green
\n(d) yellowish green<\/p>\n\nAnswer<\/span><\/summary>\n(d) yellowish green
\nThe colour of chlorine is yellowish green.<\/p>\n<\/details>\n
\nQuestion 6.
\nThe metal which cannot be stored in packets is:
\n(a) sodium
\n(b) calcium
\n(c) magnesium
\n(d) zinc<\/p>\n\nAnswer<\/span><\/summary>\n(a) sodium
\nSodium cannot be stored in packets because it will catch fire.<\/p>\n<\/details>\n
\nQuestion 7.
\nThe metal which is poorest conductor of heat is:
\n(a) mercury
\n(b) zinc
\n(c) lead
\n(d) copper<\/p>\n\nAnswer<\/span><\/summary>\n(c) lead
\nLead is the metal which is poorest conductor of heat.<\/p>\n<\/details>\n
\nQuestion 8.
\nProperty of producing sound by metals is called:
\n(a) malleability
\n(b) sonority
\n(c) ductility
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(b) sonority
\nSonority is the property of producing sound by metals.<\/p>\n<\/details>\n
\nQuestion 9.
\nThe metal which develops a protective layer over its surface by reaction with air is:
\n(a) zinc
\n(b) aluminium
\n(c) iron
\n(d) silver<\/p>\n\nAnswer<\/span><\/summary>\n(b) aluminium
\nAluminium metal develops a protective layer of aluminium oxide over its surface by reaction with air.<\/p>\n<\/details>\n
\nQuestion 10.
\nThe metal not corroded by air, water and acid is :
\n(a) copper
\n(c) gold
\n(b) zinc
\n(d) aluminium<\/p>\n\nAnswer<\/span><\/summary>\n(c) gold
\nGold metal is not corroded by air, water and acid because one of the least reative metals reactivity series.<\/p>\n<\/details>\n
\nQuestion 11.
\nThe metal which is soft is:
\n(a) sodium
\n(c) silver
\n(b) gold
\n(d) copper<\/p>\n\nAnswer<\/span><\/summary>\n(a) sodium
\nSodium metal is soft whereas gold, silver and copper are solids.<\/p>\n<\/details>\n
\nQuestion 12.
\nThe correct statement is:
\n(a) all metals are ductile
\n(c) generally, metals are ductile
\n(b) all non-metals are ductile
\n(d) some non-metals are ductile<\/p>\n\nAnswer<\/span><\/summary>\n(c) generally, metals are ductile
\nGenerally, metals are ductile. Sodium, potassium, calcium etc. are not ductile.<\/p>\n<\/details>\n
\nQuestion 13.
\nWhen copper is added to iron sulphate solution:
\n(a) iron is displaced
\n(b) S04<\/sub> is displaced
\n(c) no reaction takes place
\n(d) non of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) no reaction takes place
\nWhen copper is added to iron sulphate solution then no reaction takes place because copper is below iron in reactivity series.<\/p>\n<\/details>\n
\nQuestion 14.
\nArrange the following in the order of their decreasing chemical activity: magnesium, potassium, iron and gold.
\n(a) magnesium, potassium, iron, gold
\n(b) magnesium, iron, potassium, gold
\n(c) potassium, magnesium, iron, gold
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) potassium, magnesium, iron, gold
\nPotassium, magnesium, iron, gold.<\/p>\n<\/details>\n
\nQuestion 15.
\nWhich of the following is true about metals:
\n(a) metals generally have low melting point
\n(b) metal generally have a shiny appearance
\n(c) metals are poor conductors of heat and electricity
\n(d) metals are non-malleable and non-ductiles<\/p>\n\nAnswer<\/span><\/summary>\n(b) metal generally have a shiny appearance
\nMetals generally have a shiny appearance. They have high melting point, are good conductors of heat and electricity. They are malleable and ductile.<\/p>\n<\/details>\n
\nQuestion 16.
\nWhich one of the following is most ductile:
\n(a) Aluminium
\n(b) Copper
\n(c) Silver
\n(d) Gold<\/p>\n\nAnswer<\/span><\/summary>\n(d) Gold
\nGold is most ductile.<\/p>\n<\/details>\n
\nQuestion 17.
\nWhich one of the following metals is most reactiVe and stored in kerosene oil:
\n(a) Iron
\n(b) Gold
\n(c) Copper
\n(d) Sodium<\/p>\n\nAnswer<\/span><\/summary>\n(d) Sodium
\nSodium is most reactive and stored in kerosene oil. Sodium reacts with air and water at room temperature.<\/p>\n<\/details>\n
\nQuestion 18.
\nWhich one of the following metals will not liberate hydrogen gas when attacked by dilute hydrochloric acid:
\n(a) magnesium
\n(b) zinc
\n(c) copper
\n(d) aluminium<\/p>\n\nAnswer<\/span><\/summary>\n(c) copper
\nCopper will not liberate hydrogen gas when attacked by dilute hydrochloric acid because it is very low in reactivity series.<\/p>\n<\/details>\n
\nQuestion 19.
\nFor rusting of iron:
\n(a) only moisture is required
\n(b) only air is required
\n(c) both moisture and air is required
\n(d) neither moisture nor air is required<\/p>\n\nAnswer<\/span><\/summary>\n(c) both moisture and air is required
\nBoth moisture and air is required for rusting of iron.<\/p>\n<\/details>\n
\nQuestion 20.
\nThe property of metals by virtue of which metal can be hammered into very thin sheets is called:
\n(a) ductility
\n(b) malleability
\n(c) lustre
\n(d) sonorus<\/p>\n\nAnswer<\/span><\/summary>\n(b) malleability
\nMalleability is the property of metals by virtue of which metals can be hammered into very thin sheets.<\/p>\n<\/details>\n
\nQuestion 21.
\nNon-metals react with oxygen and form:
\n(a) natural oxides
\n(b) acidic oxides
\n(c) basic oxides
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(b) acidic oxides
\nNon-metals react with oxygen and forms non-metallic oxides which are acidic in nature.<\/p>\n<\/details>\n
\nQuestion 22.
\nMetals react with oxygen to form:
\n(a) basic oxides
\n(c) acidic oxides
\n(b) neutral oxides
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) acidic oxides
\nMetals react with oxygen and form metallic oxides which are Basic in nature.<\/p>\n<\/details>\n
\nQuestion 23.
\nMetals can form long wires. This property of metals is known as:
\n(a) sonorous
\n(c) malleability
\n(b) ductility
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(b) ductility
\nDuctility is the property of metal to form long wires.<\/p>\n<\/details>\n
\nQuestion 24.
\nThe best electrical conductor is:
\n(a) gold
\n(b) silver
\n(c) copper
\n(d) aluminium<\/p>\n\nAnswer<\/span><\/summary>\n(b) silver
\nSilver is the best conductor of electricity.<\/p>\n<\/details>\n
\nQuestion 25.
\nWhich of the following can be beaten into thin sheets ?
\n(a) oxygen
\n(b) carbon
\n(c) aluminium
\n(d) phosphorus<\/p>\n\nAnswer<\/span><\/summary>\n(c) aluminium
\nAluminium can be beaten into thin sheets because it is a metal whereas oxygen, carbon and phosphorus are non-metals.<\/p>\n<\/details>\n
\nQuestion 26.
\nThe metal which reacts violently with cold water is:
\n(a) zinc
\n(b) aluminium
\n(c) sodium
\n(d) copper<\/p>\n\nAnswer<\/span><\/summary>\n(c) sodium
\nSodium reacts violently with cold water because it is high in the reactivity series.<\/p>\n<\/details>\n
\nQuestion 27.
\nA liquid metal is:
\n(a) bromine
\n(c) iodine
\n(b) nitrogen
\n(d) mercury<\/p>\n\nAnswer<\/span><\/summary>\n(d) mercury
\nMercury is liquid metal. Bromine, nitrogen and iodine are non-metals.<\/p>\n<\/details>\n
\nQuestion 28.
\nThe gas produced when metals react with sodium hydroxide is:
\n(a) nitrogen
\n(c) oxygen
\n(b) hydrogen
\n(d) water vapour<\/p>\n\nAnswer<\/span><\/summary>\n(b) hydrogen
\nHydrogen gas is produced when metals react with sodium hydroxide.<\/p>\n<\/details>\n
\nQuestion 29.
\nThe gas produced when metals reacts with dilute acids is:
\n(a) nitrogen
\n(b) carbon dioxide
\n(c) oxygen
\n(d) hydrogen<\/p>\n\nAnswer<\/span><\/summary>\n(d) hydrogen
\nHydrogen gas is produced when metals react with dilute acids.<\/p>\n<\/details>\n
\nQuestion 30.
\nSulphur reacts with hot concentrated nitric acid and produces:
\n(a) sulphur dioxide
\n(b) sulphur trioxide
\n(c) nitrogen dioxide
\n(d) sulphur dioxide and Nitrogen dioxide<\/p>\n\nAnswer<\/span><\/summary>\n(d) sulphur dioxide and Nitrogen dioxide
\nSulphur reacts with hot concentrated nitric acid and produces sulphur dioxide, nitrogen dioxide and water<\/p>\n<\/details>\n
\nMatch the Column-A with Column-B:<\/span><\/p>\nQuestion 1.<\/p>\n
\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Metal which is liquid at room temperature<\/td>\n | (i) Iodine<\/td>\n<\/tr>\n | \n(b) Non-metal which is liquid at room temperature<\/td>\n | (ii) Sodium<\/td>\n<\/tr>\n | \n(c) Non-metal which is solid at room temperature<\/td>\n | (iii) Mercury<\/td>\n<\/tr>\n | \n(d) Metal which is poor conductor of heat<\/td>\n | (iv) Bromine<\/td>\n<\/tr>\n | \n(e) A soft metal<\/td>\n | (v) Lead<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\nAnswer<\/span><\/summary>\n\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Metal which is liquid at room temperature<\/td>\n | (iii) Mercury<\/td>\n<\/tr>\n | \n(b) Non-metal which is liquid at room temperature<\/td>\n | (iv) Bromine<\/td>\n<\/tr>\n | \n(c) Non-metal which is solid at room temperature<\/td>\n | (i) Iodine<\/td>\n<\/tr>\n | \n(d) Metal which is poor conductor of heat<\/td>\n | (v) Lead<\/td>\n<\/tr>\n | \n(e) A soft metal<\/td>\n | (ii) Sodium<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n \nQuestion 2.<\/p>\n \n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Gallium<\/td>\n | (i) Gas at room temperature<\/td>\n<\/tr>\n | \n(b) Potassium<\/td>\n | (ii) Best condutor of heat<\/td>\n<\/tr>\n | \n(c) Silver<\/td>\n | (iii) Solid non-metal at room temperature<\/td>\n<\/tr>\n | \n(d) Iodine<\/td>\n | (iv) Soft metal<\/td>\n<\/tr>\n | \n(e) Helium<\/td>\n | (v)\u00a0 Melts on our palm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\nAnswer<\/span><\/summary>\n\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Gallium<\/td>\n | (v) Melts on our palm<\/td>\n<\/tr>\n | \n(b) Potassium<\/td>\n | (iv) Soft metal<\/td>\n<\/tr>\n | \n(c) Silver<\/td>\n | (ii) Best condutor of heat<\/td>\n<\/tr>\n | \n(d) Iodine<\/td>\n | (iii) Solid non-metal at room temperature<\/td>\n<\/tr>\n | \n(e) Helium<\/td>\n | (i) Gas at room temperature<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n \nQuestion 3.<\/p>\n \n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Gold<\/td>\n | (i) Thermometers<\/td>\n<\/tr>\n | \n(b) Iron<\/td>\n | (ii) Electric wire<\/td>\n<\/tr>\n | \n(c) Aluminium<\/td>\n | (iii) Wrapping food<\/td>\n<\/tr>\n | \n(d) Copper<\/td>\n | (iv) Jewellery<\/td>\n<\/tr>\n | \n\u00a0(e) Mercury<\/td>\n | (v) Machinery<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\nAnswer<\/span><\/summary>\n\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Gold<\/td>\n | (iv) Jewellery<\/td>\n<\/tr>\n | \n(b) Iron<\/td>\n | (v) Machinery<\/td>\n<\/tr>\n | \n(c) Aluminium<\/td>\n | (iii) Wrapping food<\/td>\n<\/tr>\n | \n(d) Copper<\/td>\n | (ii) Electric wire<\/td>\n<\/tr>\n | \n\u00a0(e) Mercury<\/td>\n | (i) Thermometers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n \nState whether the following statements are True or False:<\/span><\/p>\nQuestion 1. \nAluminium foils are used to wrap food items.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 2. \nImmersion rods for heating liquids are made up of non-metallic substances.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 3. \nCopper can displace zinc from its salt solution.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 4. \nSodium and potassium are stored in kerosene.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 5. \nThe surface of most metals have shiny appearance.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 6. \nLemon pickle can be stored in an aluminium utensil.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 7. \nCopper is used for electrical wiring.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 8. \nGold is not found hi the free state.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 9. \nSodium does not occur in the free state.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 10. \nIron is used to construct bridges and houses.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 11. \nSodium reacts violently with cold water forming sodium hydroxide.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 12. \nLess reactive metals displace more reactive metals from their compounds in aqueous solutions.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 13. \nNon-metals react with oxygen to produce non-metallic oxides which are acidic in nature.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 14. \n\u2018Pop\u2019 sound indicates the presence of hydrogen gas.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 15. \nThe sulphurous acid turns red litmus blue.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nFill in the blanks:<\/span><\/p>\nQuestion 1. \nAll metals except ………………….. are solids at room temperature.<\/p>\n\n
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