A) acid rain is mostly because of oxides of nitrogen and sulphur
B) green house effect is responsible for global warming
C) ozone layer does not permit infrared infrared radiation from the sun to reach earth
D) chlorofluorocarbons are responsible for ozone layer depletion
Correct Answer: C
Solution :
Ozone is formed in the upper atmosphere from oxygen by the action of ultraviolet rays. Ozone can absorb UV light to reform oxygen. Thus, ozone layer acts as a screen and prevent the harmful UV radiations from reaching the surface of earth. Ozone layer permits IR, visible arid X-rays or gamma rays from Sun to reach Earth.
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