set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following substances is used in the preservation of food stuff?

a) Potassium Chloride

b) Sodium Benzoate

c) Citric Acid

d) Sodium Chloride

Question : 2

What is detergent?

a) Medicine

b) Catalyst

c) Soap

d) Refining agent

Question : 3

Consider the following features of newer models of motor cars.

1. Radial tyres
2. Streamlined body
3. Multipoint fuel injection
4. Catalytic converter with exhaust

a) 2, 3 and 4

b) 1 and 2

c) 2 and 3

d) 1, 3 and 4

Question : 4

What can be the impact of the excessive/inappropriate use of nitrogenous fertilizers in agriculture?

1. The proliferation of nitrogenfixing microorganisms in soil can occur.
2. The increase in the acidity of soil can take place.
3. Leaching of nitrate to the ground water can occur.

a) Only 2 and 3

b) Only 1 and 3

c) Only 2

d) 1, 2 and 3

Question : 5

Octane number is a measure of the quality of

a) Kerosene oil

b) Edible oils

c) Petrol

d) Perfumed oil

Question : 6

Aspirin is obtained from

a) Earth

b) A tree

c) Petroleum

d) Chemical reaction of acids