Paper 1 · People, Development & Environment
UGC NET 31st Dec 2025 Shift 1
Which of the following is a criteria air pollutant as well as a greenhouse gas?
AN2O
BCO2
CO3 ✓ Correct
DNO2
Correct answer: (C) O3 — Ground level ozone is listed as a criteria air pollutant and it also traps heat, so it acts as a greenhouse gas. Carbon dioxide and nitrous oxide are greenhouse gases…
Explanation
★Ground level ozone is listed as a criteria air pollutant and it also traps heat, so it acts as a greenhouse gas. Carbon dioxide and nitrous oxide are greenhouse gases but not criteria pollutants, and nitrogen dioxide is a criteria pollutant but not counted as a greenhouse gas, so ozone is the one that is both.
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