Advertisements
Advertisements
Question
Assertion (A): Ozone is both beneficial and damaging.
Reason (R): We must stop the release of chlorofluorocarbons to protect the ozone.
Options
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Advertisements
Solution
Both A and R are true but R is not the correct explanation of A.
Explanation:
Ozone can be both beneficial and harmful. In the stratosphere, ozone protects living organisms by absorbing harmful ultraviolet (UV) rays from the Sun. However, near the Earth’s surface, ozone acts as an air pollutant and can harm humans, plants, and other living organisms. Therefore, the Assertion (A) is true.
Chlorofluorocarbons (CFCs) damage the protective ozone layer. Therefore, their release should be controlled or stopped to protect stratospheric ozone. Therefore, the Reason (R) is also true.
However, the Reason only explains how to protect the ozone layer; it does not explain why ozone is both beneficial and damaging.
Hence, both A and R are true, but R is not the correct explanation of A.
