The primary pollutant that leads to photochemical; smog is:
acrolein
nitrogen oxides
ozone
sulphur dioxide
Nitrogen Oxide
factual Based
is the main constituent to prepare PAN(peroxy actual Nitrate ) that is main component of photochemical smog.
acrolein
Option 2)nitrogen oxides
Option 3)ozone
Option 4)sulphur dioxide
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