Greenhouse gases trap infrared radiation emitted from the Earth's surface, causing gradual warming of the atmosphere. Which of the following gases does not contribute to the greenhouse effect?

Chemical Environmental Engineering MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Chemical Environmental Engineeringchemical-engineering › chemical-environmental-engineering-chemical-engineering
Published
11 Mar 2019
Last updated
28 May 2026

Browse all Chemical Environmental Engineering MCQs

Choose the correct answer

Explanation

Carbon dioxide (CO2), hydrogen (H2), and nitrogen (N2) are common atmospheric gases, but only CO2 acts as a greenhouse gas. Sulfur trioxide (SO3) does not have greenhouse properties and does not contribute to trapping infrared radiation, thus it does not cause the greenhouse effect.

PakQuizHub — free MCQs and past papers for Pakistan government job tests. Content is for educational practice only.