Question:

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

Updated On: Jul 6, 2022

$NO_2$
$O_3$
$SO_2$
Unsaturated hydrocarbon

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The Correct Option is C

Solution and Explanation

The smog which is formed in presence of sunlight is called photochemical smog. This occurs in the months of summer when $NO _{2}$ and hydrocarbons are present in large amounts in atmosphere. $SO _{2}$ is not responsible for photochemical smog because concentration of $O _{3}$. PAN, aldehyde and ketones builds up in the atmosphere.

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Notes on Atmospheric pollution

Atmospheric Pollutants Chemistry

Concepts Used:

Atmospheric Pollution

The pollution that directly harms living organisms is the atmospheric pollution, air is more essential than food when it comes to the survival of life on earth. Atmospheric pollution is, consequently, a major concern for life on the planet. The most common type of air pollution that affects much of the world is Smog (smoke + fog).
Pollution is the outcome of undesired changes in the environment with harmful effects on plants, animals, and humans. The element that causes pollution is commonly known as pollutants.
Pollutants may be solids, liquids, or gases that are present in large quantities in nature and produced due to human activities or natural circumstances.
For instance, materials such as dichlorodiphenyltrichloroethane (DDT), heavy metals, chemicals, plastic materials, nuclear waste, etc., once disclosed to the environment it is difficult to remove.

Causes of Atmospheric Pollution:

There is a number of factors that contribute to the pollution of the environment. Some of the major causes of atmospheric pollution are given below -

Industrial waste
Usage of pesticides
Deforestation
Combustion of fuels
Nuclear Explosions
Use of Toxic Solvents