Question

Photochemical smog has been causing health hazard in different parts of the world. With reference to Photochemical smog, consider the following statement.
$1$. Volatile organic compounds (VOCs) and nitrogen oxide causes the formation of Photochemical smog.
$2$. The topography of the area surrounding a city can vastly influence the formation of Photochemical smog.
Which of the statements given is/are correct?

• A. $1$ only
• B. $2$ only
• C. Both $1$ and $2$
• D. Neither $1$ nor $2$

Answer 1

The correct option is C Both $1$ and $2$

Photochemical smog occurs in warm, dry and sunny climate. The main components of the photochemical smog result from the action of sunlight on unsaturated hydrocarbons, volatile organic compounds and nitrogen oxides produced by automobiles and factories. Photochemical smog has high concentration of oxidising agents and is, therefore, called as oxidising smog.