AIIMS2019Biology-Environmental Chemistry

AIIMS 2019 Biology Greenhouse Gases MCQ Question

Type: MCQ-conceptual-Medium

Which gases are responsible for increasing the temperature of atmosphere?

A

CO, NO₂, H₂S

B

CO₂, CO, NO

C

CH₄, CO₂, N₂O

D

NO₂, H₂S, CO₂

Correct Answer

Option C

Detailed Explanation

Option C is correct because methane (CH₄), carbon dioxide (CO₂), and nitrous oxide (N₂O) are all greenhouse gases that trap heat in the atmosphere, contributing to the greenhouse effect and global warming. In contrast, while carbon monoxide (CO) and nitrogen dioxide (NO₂) can have environmental impacts, they are not significant greenhouse gases compared to those listed in option C. Additionally, hydrogen sulfide (H₂S) is not a major contributor to atmospheric warming, making options A and D incorrect.

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