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Which is NOT a greenhouse gas?
AMethane
BCarbon dioxide
COxygen
DNitrous oxide
Answer & Solution
Correct answer: C. Oxygen
1. Greenhouse gases trap infrared.
2. O₂ is not a greenhouse gas.
3. CO₂, CH₄, N₂O are greenhouse gases.
_Source: UGC NET Paper 1 Study Book (ugc-net.com class notes) — Greenhouse Gases_