Among the following compounds,which one is not responsible for the depletion of ozone layer?

When plants and animals decay,the organic nitrogen is converted into inorganic nitrogen. The inorganic nitrogen is in the form of

State whether the following statements are true or false:
$(1)$ Mist is produced by particles of spread liquid and by condensation of vapour in air.
$(2)$ Particulate matter of size up to $5 \ \mu m$ reaches directly into the lungs.
$(3)$ Ozone and nitric oxide cause irritation in the nose and throat.

$pH$ value for acid rain will be

State the harmful effects of excessive production of sulfur oxide.

Which of the following is a gaseous pollutant?