Question

Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.

• A. $S{O}_2$
• B. $O_3$
• C. $N{O}_2$
• D. Unsaturated hydrocarbon

Answer 1

The correct option is A $S{O}_2$

Photochimical smog occurs in warm, dry and sunny climate. The common components are ozone, nitric oxide, acrolein, formaldehyde and PAN. The main components of the photochemical smog result from the action of sunlight on unsaturated hydrocarbons and nitrogen oxides produced by automobiles and factories. Photochemical smog has high concentration of oxidizing agents and is, therefore, called as oxidising smog. $S{O}_2$ is the component of classical smog
(i.e.; reducing smog).

Hence, option (C) is the correct option.