Question

Choose the incorrect option with respect to the ozone depletion.

• A. Chlorine degrades ozone, releasing molecular oxygen
• B. CFC moves upward and reaches troposphere
• C. It is particularly thin over the Antarctic region.
• D. Leads to aging of skin

Answer 1

The correct option is B CFC moves upward and reaches troposphere

Chlorofluorocarbons or CFCs released by humans rise through the atmosphere and reach the stratosphere, where the ozone layer is present. Hence, the statement is incorrect.
The UV rays break down the CFCs to release the chlorine atoms. These chlorine atoms then react with the ozone and degrade it by releasing oxygen molecules.
There is a large area of thinned ozone layer over the Antarctic region. This is called the ozone hole.
Ozone depletion leads to more exposure to UV rays. UV damages the DNA and also causes ageing of the skin.