Smog is a kind of air pollution. It is the blend of smoke and fog. There are two kinds of smog:
a) Classical smog
b) Photochemical smog
The two smogs can be differentiated as follows:
|
Classical smog |
Photochemical smog |
| Occurrence |
It occurs in a cool, humid climate. |
It occurs in a dry, sunny climate. |
| Components |
Smoke, fog and ulphurdioxide. |
PAN, acrolein, ozone, formaldehyde, nitric oxide. |
| Nature |
It is reducing in nature |
It is oxidizing in nature. |
