{"id":10583,"date":"2023-02-21T14:11:01","date_gmt":"2023-02-21T08:41:01","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=10583"},"modified":"2023-02-21T16:11:59","modified_gmt":"2023-02-21T10:41:59","slug":"mcq-questions-for-class-8-science-chapter-4","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/mcq-questions-for-class-8-science-chapter-4\/","title":{"rendered":"MCQ Questions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals"},"content":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals with Answers Pdf free download is available here. 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>\n

Materials: 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Question 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

\n

Match the Column-A with Column-B:<\/span><\/p>\n

Question 1.<\/p>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Metal which is liquid at room temperature<\/td>\n(i) Iodine<\/td>\n<\/tr>\n
(b) Non-metal which is liquid at room temperature<\/td>\n(ii) Sodium<\/td>\n<\/tr>\n
(c) Non-metal which is solid at room temperature<\/td>\n(iii) Mercury<\/td>\n<\/tr>\n
(d) Metal which is poor conductor of heat<\/td>\n(iv) Bromine<\/td>\n<\/tr>\n
(e) A soft metal<\/td>\n(v) Lead<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Metal which is liquid at room temperature<\/td>\n(iii) Mercury<\/td>\n<\/tr>\n
(b) Non-metal which is liquid at room temperature<\/td>\n(iv) Bromine<\/td>\n<\/tr>\n
(c) Non-metal which is solid at room temperature<\/td>\n(i) Iodine<\/td>\n<\/tr>\n
(d) Metal which is poor conductor of heat<\/td>\n(v) Lead<\/td>\n<\/tr>\n
(e) A soft metal<\/td>\n(ii) Sodium<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

Question 2.<\/p>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Gallium<\/td>\n(i) Gas at room temperature<\/td>\n<\/tr>\n
(b) Potassium<\/td>\n(ii) Best condutor of heat<\/td>\n<\/tr>\n
(c) Silver<\/td>\n(iii) Solid non-metal at room temperature<\/td>\n<\/tr>\n
(d) Iodine<\/td>\n(iv) Soft metal<\/td>\n<\/tr>\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\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Gallium<\/td>\n(v) Melts on our palm<\/td>\n<\/tr>\n
(b) Potassium<\/td>\n(iv) Soft metal<\/td>\n<\/tr>\n
(c) Silver<\/td>\n(ii) Best condutor of heat<\/td>\n<\/tr>\n
(d) Iodine<\/td>\n(iii) Solid non-metal at room temperature<\/td>\n<\/tr>\n
(e) Helium<\/td>\n(i) Gas at room temperature<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

Question 3.<\/p>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Gold<\/td>\n(i) Thermometers<\/td>\n<\/tr>\n
(b) Iron<\/td>\n(ii) Electric wire<\/td>\n<\/tr>\n
(c) Aluminium<\/td>\n(iii) Wrapping food<\/td>\n<\/tr>\n
(d) Copper<\/td>\n(iv) Jewellery<\/td>\n<\/tr>\n
\u00a0(e) Mercury<\/td>\n(v) Machinery<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Gold<\/td>\n(iv) Jewellery<\/td>\n<\/tr>\n
(b) Iron<\/td>\n(v) Machinery<\/td>\n<\/tr>\n
(c) Aluminium<\/td>\n(iii) Wrapping food<\/td>\n<\/tr>\n
(d) Copper<\/td>\n(ii) Electric wire<\/td>\n<\/tr>\n
\u00a0(e) Mercury<\/td>\n(i) Thermometers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

State whether the following statements are True or False:<\/span><\/p>\n

Question 1.
\nAluminium foils are used to wrap food items.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 2.
\nImmersion rods for heating liquids are made up of non-metallic substances.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 3.
\nCopper can displace zinc from its salt solution.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 4.
\nSodium and potassium are stored in kerosene.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 5.
\nThe surface of most metals have shiny appearance.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 6.
\nLemon pickle can be stored in an aluminium utensil.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 7.
\nCopper is used for electrical wiring.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 8.
\nGold is not found hi the free state.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 9.
\nSodium does not occur in the free state.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 10.
\nIron is used to construct bridges and houses.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 11.
\nSodium reacts violently with cold water forming sodium hydroxide.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 12.
\nLess reactive metals displace more reactive metals from their compounds in aqueous solutions.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 13.
\nNon-metals react with oxygen to produce non-metallic oxides which are acidic in nature.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 14.
\n\u2018Pop\u2019 sound indicates the presence of hydrogen gas.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 15.
\nThe sulphurous acid turns red litmus blue.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Fill in the blanks:<\/span><\/p>\n

Question 1.
\nAll metals except ………………….. are solids at room temperature.<\/p>\n

\nAnswer<\/span><\/summary>\n

mercury<\/p>\n<\/details>\n

\n

Question 2.
\nMelting point of most of the metals is ………………….. than non-metals.<\/p>\n

\nAnswer<\/span><\/summary>\n

more<\/p>\n<\/details>\n

\n

Question 3.
\nGold is at the ………………….. of the reactivity scries of metals.<\/p>\n

\nAnswer<\/span><\/summary>\n

bottom<\/p>\n<\/details>\n

\n

Question 4.
\nIron needs ………………….. and ………………….. to rust.<\/p>\n

\nAnswer<\/span><\/summary>\n

water and air<\/p>\n<\/details>\n

\n

Question 5.
\nThe property which allows metals to be hammered into thin sheets is ……………………<\/p>\n

\nAnswer<\/span><\/summary>\n

malleable<\/p>\n<\/details>\n

\n

Question 6.
\nNon-metals are ………………….. conductors of heat and electricity.<\/p>\n

\nAnswer<\/span><\/summary>\n

poor<\/p>\n<\/details>\n

\n

Question 7.
\nMetals react with oxygen to produce ………………….. oxides.<\/p>\n

\nAnswer<\/span><\/summary>\n

basic<\/p>\n<\/details>\n

\n

Question 8.
\nZinc is ………………….. reactive than copper.<\/p>\n

\nAnswer<\/span><\/summary>\n

more<\/p>\n<\/details>\n

\n

Question 9.
\nIron displaces ………………….. from copper sulphate solution.<\/p>\n

\nAnswer<\/span><\/summary>\n

copper<\/p>\n<\/details>\n

\n

Question 10.
\nPhosphorus is a very ………………….. non-metal.<\/p>\n

\nAnswer<\/span><\/summary>\n

reactive<\/p>\n<\/details>\n

\n

Question 11.
\nCopper sulphate + Zinc \u2192 ………………….. + …………………..<\/p>\n

\nAnswer<\/span><\/summary>\n

Zinc sulphate + Copper<\/p>\n<\/details>\n

\n

Question 12.
\n………………….. is the property of metals by which it can be drawn into wires.<\/p>\n

\nAnswer<\/span><\/summary>\n

Ductility<\/p>\n<\/details>\n

\n

Question 13.
\n………………….. substances when hammered break into small pieces.<\/p>\n

\nAnswer<\/span><\/summary>\n

Brittle<\/p>\n<\/details>\n

\n

Question 14.
\nAcid oxides are oxides which turn ………………….. litmus paper to ……………………<\/p>\n

\nAnswer<\/span><\/summary>\n

blue, red<\/p>\n<\/details>\n

\n

Question 15.
\nBasic oxides are oxides which turn ………………….. litmus paper to ……………………<\/p>\n

\nAnswer<\/span><\/summary>\n

red, blue<\/p>\n<\/details>\n

\n

Question 16.
\nThe shiny appearance on the cut surface of metals is called …………………..<\/p>\n

\nAnswer<\/span><\/summary>\n

metallic lustre<\/p>\n<\/details>\n

\n

Question 17.
\nCoal is ………………….. conductor of electricity.<\/p>\n

\nAnswer<\/span><\/summary>\n

poor<\/p>\n<\/details>\n

\n

Question 18.
\nMetals react with acid to produce ………………….. gas.<\/p>\n

\nAnswer<\/span><\/summary>\n

hydrogen<\/p>\n<\/details>\n

\n

Question 19.
\n………………….. reactive metals displace ………………….. reactive metals from their compounds in aqueous solutions.<\/p>\n

\nAnswer<\/span><\/summary>\n

More, less<\/p>\n<\/details>\n

\n

Question 20.
\nPhosphorus is stored in …………………..<\/p>\n

\nAnswer<\/span><\/summary>\n

water<\/p>\n<\/details>\n

\n

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Students are advised to practice the NCERT MCQ Questions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals with Answers Pdf free download is available here. MCQ Questions for Class 8 Science with Answers are prepared as per the Latest Exam Pattern. Students can solve these Materials: Metals and Non-Metals Class 8 MCQs Questions …<\/p>\n

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