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

Question : 11

Which of the following is not involved in the formation of photochemical smog?

a) NO

b) SO₂

c) Hydrocarbon

d) O₃

Question : 12

Identify the wrong statement in the following.

a) Greenhouse effect is responsible for global warming.

b) Ozone layer does not permit infrared radiation from the sun to reach the earth.

c) Chlorofluorocarbons are responsible for ozone layer depletion.

d) Acid rain is mostly because of oxides of nitrogen and sulphur.

Question : 13

BOD is connected with

a) organic matter

b) microbes and organic matter

c) microbes

d) None

Question : 14

CO₂ absorbs some of the ............. that radiates from the surface of Earth to space –

a) ultraviolet light

b) heat

c) ozone

d) smog

Question : 15

The layer which reflects radio signals back to earth is –

a) Ionosphere

b) Troposphere

c) Ozone layer

d) Stratosphere