Which is the most abundant gas in the Earth’s atmosphere by volume?

Practice MCQ for SSC, UPSC, RRB Exams

A. Oxygen A.
B. Carbon dioxide B.
C. Argon C.
D. Nitrogen D.

Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

The most abundant gas in Earth's atmosphere by volume is Nitrogen, accounting for about 78% of the atmosphere. Oxygen is the second most abundant gas, making up approximately 21%.

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