MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryEnvironmental ChemistryO3, NO2 acrolein, formaldehyde and PAN
Photochemical smog does not contain:
A.O3
B.Hydrocarbon
C.NO2
D.O2✓ Correct
Explanation
Photochemical smog contain unsaturated hydrocarbons NO2 and O3
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