environmental chemistry - Category wise Question and Answer Practice Test with Solutions

Question : 16 [IAS Prelim]

Which one of the following is another name of RDX?

a) Cyclohexane

b) Dextran

c) Cyanohydrin

d) Cyclonite

Question : 17

DDT is a –

a) antibiotics

b) biodegradable pollutant

c) non-biodegradable pollutant

d) none of the above

Question : 18

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 : 19

Eutrophication causes reduction in

a) nutrients

b) dissolved oxygen

c) dissolved salts

d) All the above

Question : 20 [IAS Prelim]

Statement I :
Coal-based thermal power stations contribute to acid-rain.
Statement II :
Oxides of carbon are emitted when coal burns.

a) Statement I is true but Statement II is false

b) Both Statement I and Statement II are individually true but Statement II is not the correct explanation of Statement I

c) Both Statement I and Statement II are individually true and Statement II is the correct explanation of Statement I

d) Statement I is false but Statement II is true