set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

DDT is a –

a) antibiotics

b) biodegradable pollutant

c) non-biodegradable pollutant

d) none of the above

Question : 2

The greenhouse effect is because of the

a) presence of CO₂ only in the atmosphere

b) pressure of O₃ and CH₄ in the atmosphere

c) presence of gases, which in general are strong infrared absorbers, in the atmosphere

d) N₂O and chlorofluorohydrocarbons in the atmosphere

Question : 3

Eutrophication causes reduction in

a) nutrients

b) dissolved oxygen

c) dissolved salts

d) All the above

Question : 4

Which of the following chemicals is used in foam fire extinguishers? [NDA]

a) Cobalt sulphate

b) Copper sulphate

c) Aluminium sulphate

d) Nickel sulphate

Question : 5

Which of the following is not a synthetic fibre:

a) Nylon

b) Rayon

c) Angora

d) Polyester

Question : 6

Minimata disease is a pollution-related disease, which results from –

a) accumulation of arsenic into atmosphere

b) release of industrial waste mercury into fishing water

c) release of human organic waste into drinking water

d) oil spills into sea