Question

Assertion (A) Ozone is destroyed by solar radiation in upper stratosphere.
Reason (R) Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth.

• A. Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct and $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $A$ is incorrect; $R$ is correct.

Answer 1

Answer: (D)

Ozone layer is found in the stratosphere. The depletion of ozone layer (creation of ozone hole) takes place due to its reaction with $NO$ or by reaction with chlorofluorocarbons (CFCs) called freons.
The ozone hole allows the UV radiations to pass through and reach us, increasing chances of skin cancer. Thus, $A$ is incorrect and $R$ is correct.