100+ Physical Chemistry MCQ Questions with Answers - 1

Question: 1

Give the uses of baking soda?

It is used in the preparation of baking powder.

It is used in fire extinguisher.

It is used as an ingredient of antacids.

It is used in textile, paper and ceramic industries.

Question: 2

What is called setting of cement?

When cement is mixed with water, it becomes hard over a period of time. This is called setting of cement.

Question: 3

Distinguish between mild steel and hard steel?

Mild steel

It contains 0.1 to 0.4 % carbon

Malleable

Used for building construction, car parts, ships etc.

Hard steel

Contains 0.5 to 1.5% of carbon

Ductile and very tough

Used for making razor blades cutting tools etc.

Question: 4

What is mortar?

A mixture of cement and sand in the ratio of 3:1 with required amount of water is called mortar. It sets to a hard mass after some time and binds the building materials like bricks and stones.

Question: 5

What is baking power?

Baking powder is a mixture of sodium bicarbonate and tartaric acid.

It is used as an additive in food stuff to make it soft.