Which of the following is not a common compon | vedclass

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(D) Photochemical smog is formed by the action of sunlight on nitrogen oxides $(NO_x)$ and hydrocarbons. Common components of photochemical smog inclu

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Sulphur dioxide

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(D) Photochemical smog is formed by the action of sunlight on nitrogen oxides $(NO_x)$ and hydrocarbons. Common components of photochemical smog include ozone $(O_3)$,nitric oxide $(NO)$,formaldehyde $(HCHO)$,acrolein $(CH_2=CH-CHO)$,and peroxyacetyl nitrate $(PAN)$. Sulphur dioxide $(SO_2)$ is a primary component of classical smog (reducing smog),not photochemical smog (oxidizing smog). Therefore,$SO_2$ is not a common component of photochemical smog.

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

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