Paper 1 · People, Development and Environment
UGC NET December 2021 June 2022 (12.07.2022) Shift-I
Which of the following air pollutants is known to be a human carcinogen?
ACarbon monoxide
BAsbestos fibre ✓ Correct
CNitrogen dioxide
DSulphur dioxide
Correct answer: (B) Asbestos fibre — The answer is asbestos fibre.
Explanation
★The answer is asbestos fibre.
★Asbestos fibres are naturally occurring silicates used in construction and textiles.
★Breathing in these fibres is known to cause cancer.
★So among these air pollutants, asbestos fibre is the human carcinogen.
★The other gases harm health but are not classed the same way.
★So asbestos fibre is the carcinogenic pollutant here.
★So the answer is asbestos fibre.
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