Environmentalhard · Past Paper
Photochemical smog is primarily composed of ozone and:
ASulfur dioxide
BPAN (Peroxyacetyl nitrate)
CAmmonia
DCarbon monoxide
✓ Correct Answer: B — PAN (Peroxyacetyl nitrate)
Photochemical smog (Los Angeles smog) is formed by sunlight reacting with nitrogen oxides and volatile organic compounds, creating PAN.
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