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Which is a major urban air pollutant?
APure oxygen
BParticulate Matter (PM2.5)
CWater vapor
DAtomic nitrogen
Answer & Solution
Correct answer: B. Particulate Matter (PM2.5)
1. PM2.5 = fine particulate matter ≤2.5 μm.
2. Penetrates lungs causing respiratory disease.
3. Hence PM2.5.
_Source: UGC NET Paper 1 Study Book (ugc-net.com class notes) — Air Pollution_