MCQ Questions for class 10 science Metals and Non-metals will help you with getting prepare with the different strategies for these chapters and besides what kind of Questions can be asked in the exam. Answer to all Questions is moreover given point-by-point explanation which makes clear the idea.
Practice Class 10 Science MCQ Questions of Metals and Non-Metals
1. Galvanisation is a method of protecting iron from grudging by coating with a thin layer of
(a) Galium
(b) Aluminium
(c) Zinc
(d) Silver
Answer:
(c) Zinc
2. The ability of metals to be drawn into thin wire is known as
(a) Ductility
(b) Malleability
(c)Sonorousity
(d) Conductivity
Answer:
(b) Malleability
3. Copper objects lose their shine and form green coating of
(a) Copper oxide
(b) Copper hydroxide and Copper oxide
(c) Basic Copper carbonate
(d) Copper carbonate
Answer:
(c) Basic Copper carbonate
4. Chemically rust is
(a) Hydrated ferrous oxide
(b) Hydrated ferric oxide
(c) only ferric oxide
(d) none of these
Answer:
(b) Hydrated ferric oxide
5. 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)
Answer:
(d) (i) and (iv)
6. 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
Answer:
(b) Ag
7. Which of the given properties is generally not shown by metals?
(a) Electrical conduction
(b) Sonorous in nature
(c) Dullness
(d) Ductility
Answer:
(c) Dullness
8. Which of the given can undergo a chemical reaction?
(a) \(MgSO_4 + Fe\)
(b) \(ZnSO_4 + Fe\)
(c) \(MgSO_4 + Pb\)
(d) \(CuSO_4 + Fe\)
Answer:
(d) \(CuSO_4 + Fe\)
9. Metals are extracted from:
(a) compounds
(b) minerals
(c) ores
(d) both minerals and ores.
Answer:
(c) ores
10. Calcination is :
(a) heating the ore in a limited supply of air
(b) heating the ore in excess of air
(c) cooling the ore
(d) none of these.
Answer:
(a) heating the ore in a limited supply of air
11. Setting of Plaster of Paris takes place due to
(a) Solder
(b) Bronze
(c) Brass
(d) Bell metal
Answer:
(a) Solder
12. Heating pyrites to remove sulphur is called
(a) Smelting
(b) Calcination
(c) Liquation
(d) Roasting
Answer:
(d) Roasting
13. The second most abundant metal in the earth’s crust is
(a) oxygen
(b) silicon
(c) aluminium
(d) iron
Answer:
(d) iron
14. A student placed an iron nail in copper sulphate solution. He observed the reddish brown coating on the iron nail which is
(a) soft and dull
(b) hard and flading
(c) smooth and shining
(d) rough and granular
Answer:
(d) rough and granular
15. An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept in open. It reacts vigorously with water. Identify the element from the following:
(a) Mg
(b) Na
(c) P
(d) Ca
Answer:
(b) Na
16. Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
(a) Brass
(b) Bronze
(c) Amalgam
(d) Steel
Answer:
(d) Steel
17. During smelting, an additional substance is added which combines with impurities to form a fusible product. It is known as
(a) Slag
(b) Mud
(c) Gangue
(d) Flux
Answer:
(d) Flux
18. In extraction of copper, the flux used is
(a) \(CaO\)
(b) \(SiO_2\)
(c) \(FeO\)
(d) \(FeSiO_3\)
Answer:
(b) \(SiO_2\)
19. Metal always found in free state is:
(a) Gold
(b) Silver
(c) Copper
(d) Sodium
Answer:
(a) Gold
20. 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
Answer:
(b) Has low melting point
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