CBSE Class 10 Metals & Non-metals Unsolved MCQ

CBSE Class 10 Metals & Non-metals Unsolved MCQ

1. Which of the following can be beaten into thin sheets?
   (a) Zinc
   (b) Phosphorus
   (c) Sulphur
   (d) Oxygen
2. Which of the following statements is correct?
   (a) All metals are ductile.
   (b) All non-metals are ductile.
   (c) Generally, metals are ductile.
   (d) Some non-metals are ductile.
3. Which of the following is not a metal?
   (a) copper
   (b) sulphur
   (c) aluminium
   (d) iron
4. The substance that will be flattened on beating with a hammer is
   (a) crystal of iodine
   (b) lump of sulphur
   (c) piece of coal
   (d) zinc granule
5. Arun has learnt that non-metals on beating with a hammer are generally broken into pieces.
   Which of the following is a nonmetal?
   (a) iron nail
   (b) aluminium wire
   (c) copper plate
   (d) piece of coal
6. Materials which can be drawn into wires are called ductile. Which of the following is not a ductile
   material?
   (a) silver
   (b) copper
   (c) sulphur
   (d) aluminium
7. Metals are generally hard. Which of the following metals is an exception and can be cut with a
   knife?
   (a) iron
   (b) sodium
   (c) gold
   (d) magnesium
8. Metals are generally solid. Which of the following metals is in the liquid state at room
   temperature?
   (a) mercury
   (b) silver
   (c) aluminium
   (d) sodium
9. Metals generally react with dilute acids to produce hydrogen gas. Which one of the following
   metals does not react with dilute hydrochloric acid?
   (a) magnesium
   (b) aluminium
   (c) iron
   (d) copper
10. Which of the following reacts with cold water vigorously?
    (a) carbon
    (b) sodium
    (c) magnesium
    (d) sulphur
11. The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as
    sodium hydroxide solution is
    (a) copper
    (b) iron
    (c) aluminium
    (d) sodium
    
12. Which of the following non-metals reacts and catches fire on exposure to air?
    (a) phosphorus
    (b) nitrogen
    (c) sulphur
    (d) hydrogen
13. Generally metallic oxides are basic and non-metallic oxides are acidic in nature. Solution of
    which of the following oxides in water will change the colour of blue litmus to red?
    (a) sulphur dioxide
    (b) magnesium oxide
    (c) iron oxide
    (d) copper oxide
14. Which of the following property is not responsible for copper to be used as electrical conduction
    wires?
    (a) ductility
    (b) colour
    (c) good conductor of electricity
    (d) it is solid
15. The ability of metals to be drawn into thin wire is known as
    (a) ductility
    (b) malleability
    (c) sonorousity
    (d) conductivity
16. Aluminium is used for making cooking utensils. Which of the following properties of
    aluminium are responsible for the same?
    (i) Good thermal conductivity
    (ii) Good electrical conductivity
    (iii) Ductility
    (iv) High melting point
    (a) (i) and (ii)
    (b) (i) and (iii)
    (c) (ii) and (iii)
    (d) (i) and (iv)
17. Which of the following property is generally not shown by metals?
    (a) Electrical conduction
    (b) Sonorous in nature
    (c) Dullness
    (d) Ductility
18. Which one of the following metals do not react with cold as well as hot water?
    (a) Na
    (b) Ca
    (c) Mg
    (d) Fe
19. Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with
    steam?
    (a) FeO
    (b) Fe₂O₃
    (c) Fe₃O₄
    (d) Fe₂O₃ and Fe₃O₄
20. What happens when calcium is treated with water?
    (i) It does not react with water
    (ii) It reacts violently with water
    (iii) It reacts less violently with water
    (iv) Bubbles of hydrogen gas formed stick to the surface of calcium
    (a) (i) and (iv)
    (b) (ii) and (iii)
    (c) (i) and (ii)
    (d) (iii) and (iv)
21. Generally metals react with acids to give salt and hydrogen gas. Which of the following acids
    does not give hydrogen gas on reacting with metals (except Mn and Mg)?
    (a) H₂SO₄
    (b) HCl
    (c) HNO₃
    (d) All of these
22. Which of the following are not ionic compounds?
    (i) KCl (ii) HCl (iii) CCl₄ (iv) NaCl
    (a) (i) and (ii)
    (b) (ii) and (iii)
    (c) (iii) and (iv)
    (d) (i) and (iii)
23. Which one of the following properties is not generally exhibited by ionic compounds?
    (a) Solubility in water
    (b) Electrical conductivity in solid state
    (c) High melting and boiling points
    (d) Electrical conductivity in molten state
    
24. Which of the following metals exist in their native state in nature?
    (i) Cu (ii) Au (iii) Zn (iv) Ag
    (a) (i) and (ii)
    (b) (ii) and (iii)
    (c) (ii) and (iv)
    (d) (iii) and (iv)
25. Metals are refined by using different methods. Which of the following metals are refined by
    electrolytic refining?
    (i) Au (ii) Cu (iii) Na (iv) K
    (a) (i) and (ii)
    (b) (i) and (iii)
    (c) (ii) and (iii)
    (d) (iii) and (iv)
26. Silver articles become black on prolonged exposure to air. This is due to the formation of
    (a) Ag₃N
    (b) Ag₂O
    (c) Ag₂S
    (d) Ag₂S and Ag₃N
27. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
    (a) Gallium
    (b) Aluminium
    (c) Zinc
    (d) Silver
28. Stainless steel is very useful material for our life. In stainless steel, iron is mixed with
    (a) Ni and Cr
    (b) Cu and Cr
    (c) Ni and Cu
    (d) Cu and Au
29. If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating.
    It is due to the formation of
    (a) CuSO₄
    (b) CuCO₃
    (c) Cu(NO₃)₂
    (d) CuO
30. Generally, metals are solid in nature. Which one of the following metals is found in liquid state
    at room temperature?
    (a) Na
    (b) Fe
    (c) Cr
    (d) Hg
31. Which of the following metals are obtained by electrolysis of their chlorides in molten state ?
    (i) Na (ii) Ca (iii) Fe (iv) Cu
    (a) (i) and (iv)
    (b) (iii) and (iv)
    (c) (i) and (iii)
    (d) (i) and (ii)
32. Generally, non-metals are not lustrous. Which of the following nonmetal is lustrous?
    (a) Sulphur
    (b) Oxygen
    (c) Nitrogen
    (d) Iodine
33. Which one of the following four metals would be displaced from the solution of its salts by
    other three metals?
    (a) Mg
    (b) Ag
    (c) Zn
    (d) Cu
34. 2 mL each of concentrated HCl, HNO₃ and a mixture of concentrated HCl and concentrated
    HNO₃ in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of
    metal was put in each test tube. No change occurred in test tubes A and B but the metal got
    dissolved in test tube C respectively. The metal could be
    (a) Al
    (b) Au
    (c) Cu
    (d) Pt
35. An alloy is
    (a) an element
    (b) a compound
    (c) a homogeneous mixture
    (d) a heterogeneous mixture
36. During electrolytic refining of zinc, it gets
    (a) deposited on cathode
    (b) deposited on anode
    (c) deposited on cathode as well as anode
    (d) remains in the solution
    
37. An electrolytic cell consists of
    (i) positively charged cathode (ii) negatively charged anode
    (iii) positively charged anode (iv) negatively charged cathode
    (a) (i) and (ii)
    (b) (iii) and (iv)
    (c) (i) and (iii)
    (d) (ii) ad (iv)
38. An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept
    open in air. It reacts vigorously with water. Identify the element from the following
    (a) Mg
    (b) Na
    (c) P
    (d) Ca
39. Alloys are homogeneous mixtures of a metal with a metal or nonmetal. Which among the
    following alloys contain non-metal as one of its constituents?
    (a) Brass
    (b) Bronze
    (c) Amalgam
    (d) Steel
40. Which among the following statements is incorrect for magnesium metal?
    (a) It burns in oxygen with a dazzling white flame
    (b) It reacts with cold water to form magnesium oxide and evolves hydrogen gas
    (c) It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas
    (d) It reacts with steam to form magnesium hydroxide and evolves hydrogen gas
41. Which among the following alloys contain mercury as one of its constituents?
    (a) Stainless steel
    (b) Alnico
    (c) Solder
    (d) Zinc amalgam
42. Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which
    of the following properties is not shown by Z?
    (a) Has high melting point
    (b) Has low melting point
    (c) Conducts electricity in molten state
    (d) Occurs as solid
43. The electronic configurations of three elements X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z —
    2, 8, 2. Which of the following is correct?
    (a) X is a metal
    (b) Y is a metal
    (c) Z is a non-metal
    (d) Y is a non-metal and Z is a metal
44. Although metals form basic oxides, which of the following metals form an amphoteric oxide?
    (a) Na
    (b) Ca
    (c) Al
    (d) Cu
45. Generally, non-metals are not conductors of electricity. Which of the following is a good
    conductor of electricity?
    (a) Diamond
    (b) Graphite
    (c) Sulphur
    (d) Fullerene
46. Electrical wires have a coating of an insulting material. The material, generally used is
    (a) Sulphur
    (b) Graphite
    (c) PVC
    (d) All can be used
47. Which of the following non-metals is a liquid?
    (a) Carbon
    (b) Bromine
    (c) Phosphorus
    (d) Sulphur
48. Which of the following can undergo a chemical reaction?
    (a) MgSO₄ + Fe
    (b) ZnSO₄ + Fe
    (c) MgSO₄ + Pb
    (d) CuSO₄ + Fe

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