Question

Assertion (A): Chlorofluorocarbons (CFCs) are responsible for ozone depletion.

Reason (R): Ozone level or thickness is decreasing every year.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

Explanation:

CFCs cause ozone depletion by releasing chlorine radicals that destroy ozone. The decreasing ozone thickness describes the trend, but does not explain the chemical cause.