Which of the following is NOT a greenhouse gas?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Nitric oxide.
Nitric oxide (NO) contributes to air pollution and smog, it does not trap heat like greenhouse gases.
Explanation of Other Options:
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Methane (CH₄): A potent greenhouse gas emitted from agriculture and fossil fuels.
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Carbon dioxide (CO₂): The primary greenhouse gas driving climate change, mainly from burning fossil fuels.
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Nitrous oxide (N₂O): A strong greenhouse gas released from fertilisers and industrial processes.