Question

Depletion of ozone is mainly due to

• A. chlorofluorocarbon compounds
• B. carbon monoxide
• C. methane
• D. pesticides

Answer 1

The correct option is A

chlorofluorocarbon compounds

The correct option is A.

Explanation of the correct option :

1. Chlorofluorocarbons (CFC) are gases used for various purposes including solvents, refrigerants, and aerosol sprays.
2. They are organic chemicals and contain carbon, (sometimes hydrogen,) chlorine, and fluorine.

Explanation of the incorrect options:

Option B:

Depletion of ozone is not caused by carbon monoxide.

Option C:

Methane is a greenhouse gas but does not cause in ozone depletion.

Option D:

Pesticides are chemicals that kill the pests.

Final answer: Depletion of ozone is mainly due to chlorofluorocarbon compounds.