set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following compounds is used as a sedative?

a) Calcium Chloride

b) Ethyl Alcohol

c) Potassium Bromide

d) Phosphorus Trichloride

Question : 2

‘Humus’ is an example of

a) Organic colloids

b) Soil structure

c) Crystalloids

d) None of the above

Question : 3

The fuel used in a diesel engine

a) Mixture of diesel and petrol

b) Vapour of diesel and air

c) Diesel only

d) Mixture of diesel, air and petrol

Question : 4

Which one of the following is used in the manufacture of soaps?

a) Mobil oil

b) Kerosene oil

c) Vegetable oil

d) Cutting oil

Question : 5

Tetraethyl Lead (TEL) is added to petrol

a) To increase its anti-knocking rating

b) To prevent it from freezing

c) To increase its flash points

d) To increase its boiling point

Question : 6

Consider the following statements. Sodium silicate and sodium sulphate are mixed as detergents in washing powders so that

1. To maintain dryness of the powder.
2. To maintain the basicity of powder.

a) Only 2

b) Both 1 and 2

c) Only 1

d) None of these