Metal and Non-metal important questions

 Metal and Non-metal important Questions (Mcq) 

1.The most abundant metal in the earth’s crust is

(a) Iron

(b) Aluminium

(c) Calcium

(d) Sodium

Answer: b

2. The poorest conductor of heat among metals is

(a) Lead

(b) Mercury

(c) Calcium

(d) Sodium

Answer: a

3. Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?

(a) Sonorousness

(b) Malleability

(c) Ductility

(d) Conductivity

Answer:- (a) Sonorousness

4. Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity?

Zinc, Iron, Magnesium, Sodium

(a) Zinc > Iron > Magnesium > Sodium

(b) Sodium > Magnesium > Iron > Zinc

(c) Sodium > Zinc > Magnesium > Iron

(d) Sodium > Magnesium > Zinc > Iron

Answer:- d

5. Which of the following non-metal is lustrous?

(a) Sulphur

(b) Oxygen

(c) Nitrogen

(d) Iodine

Answer :- d

6. The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?

(a) He

(b) Ar

(c) Ne

(d) Kr

Answer :- (c)

7. Amalgam is an alloy of

(a) Copper and Tin

(b) Mercury

(c) Lead and Tin

(d) Copper and Zinc

Answer :- b

8. The ability of metals to be drawn into thin wires is known as

(a) ductility

(b) malleability

(c) sonority

(d) conductivity

Answer

Answer: (a) ductility

Question 9.

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)

Question 10.

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

Question 11.

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

Answer:- (b) Graphite

Question 12.

The atomic number of an element X is 19. The number of electrons in its ion X+ will be:

(a) 18

(b) 19

(c) 20

(d) 21

Answer:- (a) 18

Question 13.

The atomic number of an element Y is 17. The number of electrons in its ion Y– will be:

(a) 17

(b) 18

(c) 19

(d) 20

Answer:- (b) 18

Question 14.

Which of the following is an iron ore?

(a) Cinnabar

(b) Calamine

(c) Haematite

(d) Rock salt

Answer:- (c) Haematite

Question 15.

The metal which can be extracted from the bauxite ore is:

(a) Na

(b) Mn

(c) Al

(d) Hg

Answer:- (c) Al