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Photochemical smog formed in congested m...

Photochemical smog formed in congested metropolitan cities mainly consists of :

A

ozone, peroxyacetyl nitrate and `NO_(x)`

B

smoke, peroxyacetyl nitrate and `SO_(2)`

C

hydrocarbons, `SO_(2)` and `CO_(2)`

D

hydrocarbons, `O_(3)` and `SO_(x)`

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The correct Answer is:
A
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