Question

Depletion of ozone layer is mainly due to

• A. (a) Chlorofluorocarbon compounds
• B. (b) Pollution
• C. (c) Methane
• D. (d) Pesticides

Answer 1

The correct option is A

(a) Chlorofluorocarbon compounds

The correct option is a.

Explanation for correct answer:

1. The depletion of the ozone layer is due to the use of ozone-depleting substances (ODS) like chlorofluorocarbons (CFC) and other halogens.
2. These chemicals are used in refrigeration, fire extinguishers and aerosols.
3. When released into the air, chlorofluorocarbons destroy the ozone layer gradually and make it thinner.
4. This allows more ultraviolet radiation to reach the earth.

Final answer: Depletion of ozone layer is mainly due to Chlorofluorocarbon compounds