Catalytic converters present in automobiles prevent the release of nitrogen oxide to the atmosphere.

Photochemical smog is a mixture of smoke, fog and $\mathrm{SO}_2$.

Chlorofluorocarbons damage ozone layer.

Acid rain corrodes water pipes resulting in the leaching of heavy metals into the drinking water.

classical smog is also called reducing smog.

common components of classical smog are $\mathrm{O}_3, \mathrm{NO}, \mathrm{HCHO}$.

photochemical smog leads to cracking of rubber and corrosion of metals.

photochemical smog occurs in warm, dry and sunny climate.

It is controlled by the use of catalytic converters in automobiles.

It causes corrosion of metals.

It is a mixture of $\mathrm{SO}_2$, smoke and fog.

It causes extensive damage to plant life.

$\mathrm{SO}_4^{2-}$

$\mathrm{NO}_3^{-}$

$\mathrm{F}^{-}$

Pb