Which of the following is not a common component of photochemical smog?

Peroxyacetyl nitrate

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Acrolein

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Fomaldehyde

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Carbon dioxide

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Solution

The correct option is D Carbon dioxide
When chemical reaction between the pollutants like hydrocarbons and nitrogen oxides along with sunlight occurs,it causes photochemical smog. Photochemical smog only occurs in presence of sunlight. Carbon dioxide is a greenhouse gas and hence it's concentration in atmosphere does not increase the smog.

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Which of the following are common components of a photochemical smog?

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