Question

what is photochemical smog?
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Answer 1

Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. It is visible as a brown haze, and is most prominent during the morning and afternoon, especially in densely populated, warm cities.[2] Cities that experience this smog daily include Los Angeles, Sydney, Mexico City, Beijing, and many more.

Answer 2

Explanation:

Photochemical Smogs:- Smogs which are produced during the day time or in warm, dry and sunny climate. Hydrocarbons and nitrogen oxides which are produced by the industries and automobiles when these are reacted with sunlight then the produced smog is known as photochemical smog.

Some related points about photochemical Smogs:-

1. It is a oxidising smog.
2. This type of Smogs have concentration of oxidising agents very high.
3. This type of smog is mostly found in the cities which have very high population or have high vehicular density.
4. NO or nitric oxide plays main role in formation of the photochemical smog.
5. Another type of smog which is classical smog is generally reducing smog and have high concentration of sulphur dioxide.

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