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Q.

Which of the following are common components of photochemical smog?

1) chlorofluorocarbons                        2) acrolein

3) ozone                                               4) peroxyacetyl nitrate

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a

2, 3 

b

2, 3, 4

c

3, 4 

d

1, 2

answer is D.

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Detailed Solution

The common components of photochemical smog are ozone , nitric oxide , acrolein, formaldehyde and peroxy acetyl nitrate(PAN) . hence chlorofluorocarbons is not common component of photochemical smog. 
 

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