Answers

2015-08-10T10:24:53+05:30
Photo chemical smog is a resultant of reaction among
1) No2 , 02 and proxyacetyl nitrate in the presence of sunlight
2) Co , 02 and proxyacetyl nitrate in the presence of sunlight
3) Co , co2 and No2 at low temperature
4) high concentration of N02 03 and C0 in the evening
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