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  • Which of the following is false.Option: 1 Photochemical smog has high concentration of reducing agents and is, therefore, called as reducing smog.</p

Which of the following is false.

Option: 1

Photochemical smog has high concentration of reducing agents and is, therefore, called as reducing smog.


Option: 2

Non-viable particulates consist of smoke, dust, mist, fumes etc.


Option: 3

Classical smog occurs in cool humid climate and it is mixture of smoke, fog and sulphurdioxide.


Option: 4

Ozone reacts with unburnt hydrocarbons in polluted air to produce peroxyacetyl nitrate (PAN).


Answers (1)

best_answer

 

Photochemical smog / oxidising smog -

Occurs in warm, dry and Sunny climate

- wherein

Mixture of formaldehyde, acrolein, nitric oxide, ozone, and proxy-acyl nitrates (PAN)

 

 

 

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)

 

 

 

Posted by

Deependra Verma

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