The secondary precursors of photochemical smo | vedclass

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Question

(D) Photochemical smog is formed in warm and dry climates due to the action of sunlight on nitrogen oxides and hydrocarbons. $NO_2$ and $O_3$ are stro

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$O_3$ and $PAN$

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(D) Photochemical smog is formed in warm and dry climates due to the action of sunlight on nitrogen oxides and hydrocarbons. $NO_2$ and $O_3$ are strong oxidizing agents. They react with unburnt hydrocarbons in the atmosphere to produce secondary pollutants such as formaldehyde,acrolein,and $PAN$ (peroxyacetyl nitrate). Therefore,$O_3$ and $PAN$ are considered the secondary pollutants or secondary precursors formed during the process.

The secondary precursors of photochemical smog are

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Observe the following statements:
Statement-$I$: The carbon-containing components of photochemical smog are acrolein,methanal,and $PAN$.
Statement-$II$: The number of greenhouse gases in the list given below is $5$: $CH_4, CO_2, NO, H_2O_{(l)}, H_2O_{(g)}, O_2, O_3$.
The correct answer is:

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