set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Out of the following which is not an alloy?

a) Copper

b) Bronze

c) Steel

d) Brass

Question : 2

For the ceiling of diamonds, the unit of weight is carat. One carat is equal to

a) 400 mg

b) 100 mg

c) 200 mg

d) 300 mg

Question : 3

Match List-I with List-II:

a) 2 1 4 3

b) 1 2 3 4

c) 1 2 4 3

d) 2 1 3 4

Question : 4

Water is a good solvent of ionic salts because

a) It has no colour

b) It has a high specific heat

c) It has a high boiling point

d) It has a high dipole moment

Question : 5

Large quantities of drinking water is prepared from impure water by

a) Decantation

b) Ion-exchange

c) Desalination

d) Distillation

Question : 6

Consider the following statements and select the correct answer from given codes below.

1. Water becomes harder due to the presence of Calcium Sulphate and it is not usable.
2. Diamond is harder than copper and iron.
3. Oxygen is the main component of air.
4. Nitrogen is used in the manufacture of vegetable ghee.

a) 2 and 4

b) 1 and 2

c) 3 and 4

d) 1 and 3