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Which of the following is not a greenhouse gas?
Question

Which of the following is not a greenhouse gas?   

A.

CO₂   

B.

CH₄   

C.

O₂   

D.

N₂O

Correct option is C


Answer: (c) O₂
· Explanation: Oxygen is not a greenhouse gas.
· (a) CO₂, (b) CH₄, (d) N₂O – All trap heat in the atmosphere.

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