Ozone layer of upper atmosphere is being destroyed by

Options

A. chlorofluorocarbons
B. `SO_(2)`
C. `O_(2) " and " CO_(2)`
D. smog.

Answer

A

Explanation

CFCs are widely used as refrigerants. CFCs discharged in the lower part of atmosphere move upward and reach stratosphere. In stratosphere, UV rays act on them releasing Cl atoms. Cl degrades ozone releasing molecular oxygen, with these atoms acting merely as catalysts, Cl atoms are not consumed in the reaction. CFCs added to the stratosphere have permanent and continuing affects on ozone levels.