set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following fossil fuels is the cleanest fuel?

a) Natural gas

b) Coal

c) Petrol

d) Diesel

Question : 2

Which one of the following is used in food preservation?

a) Acetylene

b) Benzoic Acid

c) Sodium Carbonate

d) Sodium Chloride

Question : 3

Assertion (A):
Chemical fertilizers are necessary for the phosphorus need of plants.
Reason (R):
One metric tonne of organic manure can barely supply 2 or 3 kg of phosphorus.
From the above statement, which is correct?

a) (A) is true, but (R) is false

b) Both (A) and (R) are true and (R) is the correct explanation of (A)

c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

d) (A) is false, but (R) is true

Question : 4

The main component of biogas is

a) Butane

b) Hydrogen

c) Methane

d) Acetylene

Question : 5

Consider the following statements.

1. Liquefied Natural Gas (LNG) is liquefied under extremely cold temperatures and high pressure to facilitate storage or transportation in specially designed vessels.
2. First LNG terminal in India was built in Hassan.
3. Natural Gas Matters (NGM) are separated from LPG and these include ethane, propane, butane and natural gasoline.

a) 2 and 3

b) Only 1

c) 1 and 3

d) 1, 2 and 3

Question : 6

Milk is an example of

a) A foam

b) An emulsion

c) A gel

d) A suspension