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Smog, Classical Smog

Photochemical...

Question

Photochemical smog is the chemical reaction of sunlight, nitrogen oxides and volatile ________ compounds in the atmosphere, which leaves airborne particles and ground-level ozone.

A

hydrocarbons

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B

inorganic compounds

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C

sulphates

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D

carbonates

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Solution

The correct option is B hydrocarbons
Photochemical smog is the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere, which leaves airborne particles and ground-level ozone.
Hence option A is the correct answer.

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Q. Assertion :Photochemical smog is mainly composed of nitrogen oxides, volatile organic compounds, ozone and peroxyacyl nitrates. Reason: Photochemical smog develops in cold weather conditions by the interaction of secondary pollutants.

Q. 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?

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(i) It is a secondary pollutant present in photochemical smog.
(ii) It is produced by photochemical reactions between hydrocarbons and nitrogen oxides in the presence of sunlight of UV radiations.
(iii) It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas.
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Q. Nitrogen oxides and volatile compounds react in the presence of heat and sunlight to form

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