The chlorine free radical reacts with ozone to form a ..... free radical.

On the surface of polar stratospheric clouds,hydrolysis of chlorine nitrate $(ClONO_2)$ gives $A$ and $B$,while its reaction with $HCl$ produces $B$ and $C$. $A, B$ and $C$ are,respectively:

Ozone is formed in the upper atmosphere by a photochemical reaction with $O_2$ in the presence of

Which of the following is one of the products of the ozonolysis of CFCs in the ozone layer in the atmosphere?

Which components are present in the stratosphere?

What are pesticides and herbicides? Explain giving examples.