'Bad' ozone is formed in

The main source of $BOD$ in the Ganga river is .....

What does '$Z$' represent in the given figure?

According to the Euro-$III$ norms,what was the controlled limit for sulfur content in diesel (in $ppm$)?

Nitrogen oxides produced from the emission of automobiles and power plants are the source of fine airborne particles which lead to:

Which of the following radiations is non-ionizing?