NCERT Class 10 Science Metals and Non metals Questions

Metals and Non-metals

Multiple Choice Questions

1. Which of the following property is generally not shown by metals?

(a) Electrical conduction

(b) Sonorous in nature

(c) Dullness

(d) Ductility

2. The ability of metals to be drawn into thin wire is known as

(a) ductility

(b) malleability

(c) sonorousity

(d) conductivity

3. 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)

4. Which one of the following metals do not react with cold as well as hot water?

(a) Na

(b) Ca

(c) Mg

(d) Fe

5. 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

6. 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)

7. 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

8. The composition of aqua-regia is

(a) Dil.HCl : Conc. HNO3

3 : 1

(b) Conc.HCl : Dil. HNO3

3 : 1

(c) Conc.HCl : Conc.HNO3

3 : 1

(d) Dil.HCl : Dil.HNO3

3 : 1

9. 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)

10. 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

11. 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)

12. 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)

13. 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

14. Galvanisation is a method of protecting iron from rusting by coating with a thin layer of

(a) Gallium

(b) Aluminium

(c) Zinc

(d) Silver

15. 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

Please refer to attached file for NCERT Class 10 Science Metals and Non-metals Questions