Question

Depletion of ozone layer is mainly due to

• A. Methane
• B. Carbon dioxide
• C. Chloroflorocarbons
• D. Nitrogen

Answer 1

Answer: (C)

Chloroflorocarbons

Depletion of ozone layer is mainly due to Chloroflorocarbons.
Note:
The following describes the destruction of the ozone by chlorofluorocarbons.
Chlorofluorocarbons contains the chlorine molecule which reacts with ozone (O${}_3$) molecule and splits into O${}_2$ and O molecules.
Chlorofluorocarbons are used in refrigerators, air conditioners and aerosol sprays. They damage the ozone layer of the atmosphere.