The molecule that has minimum/ no role in the formation of photochemical smog, is :

  • Option 1)

    N_{2}

  • Option 2)

    CH_{2}=O

  • Option 3)

    O_{3}

  • Option 4)

    NO

Answers (1)
A admin

 

Photochemical smog formation -

Emission of nitrogen oxides and hydrocarbons from automobiles exhausts and solar energy by chain of reactions. NO3 and O3 react with unburnt hydrocarbons to produce formaldehyde, aerolein and proxy-acyl nitrates (PAN)

- wherein

NO_{2}(g)\rightarrow NO\left ( g \right )+O\left ( g \right )

O\left ( g \right )+O_{2}\rightleftharpoons O_{3}(g)

NO(g)+O_{3}\left ( g \right )\rightarrow NO_{2}\left ( g \right )+O_{2}\left ( g \right )

3CH_{4}+2O_{3}\rightarrow 3CH_{2}= O\,(formaldehyde)+3H_{2}O

CH_{2}= CHCH= O\, (Acrolein)

CH_{3}COONO_{2}

            \parallel

            O  (PAN)

As we haveleared is photo chemical smog mainly we know that NO2 ,O3 and hydrocarbons are responcible for bulding up smog

 


Option 1)

N_{2}

Option 2)

CH_{2}=O

Option 3)

O_{3}

Option 4)

NO

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