Environmentalhard · Past Paper
Which pollutant is the primary cause of 'Photochemical Smog'?
ASO2
BNitrogen oxides and Hydrocarbons
CCO2
DDust particles
✓ Correct Answer: B — Nitrogen oxides and Hydrocarbons
Photochemical smog is formed when sunlight reacts with nitrogen oxides and volatile organic compounds (hydrocarbons).
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