Q.

Ozone depletion in the atmosphere is mainly caused by -

A. sulphur dioxide
B. nitrogen dioxide
C. hydrogen sulphide
D. chlorofluorocarbon
Answer» D. chlorofluorocarbon
Explanation: A chlorofluorocarbon (CFC) is an organic compound that contains only carbon, chlorine, hydrogen and fluorine, produced as a volatile derivative of methane and ethane. They contribute to ozone depletion in the upper atmosphere.
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