Ozone layer of upper atmosphere is being destroyed by:
Correct answer: C. Chloro-fluoro-carbon
- A. Sulphur di-oxide
- B. Carbon di-oxide
- C. Chloro-fluoro-carbon
- D. Smog
Explanation
Chlorofluorocarbons release chlorine radicals in the stratosphere, and these radicals catalytically destroy ozone. Sulphur dioxide contributes to acid rain, whereas carbon dioxide contributes mainly to the greenhouse effect.
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