General Knowledge
Solved MCQs
Medium
Question
Which gas is most abundant in Earth's atmosphere?
A
Oxygen
B
Carbon dioxide
C
Nitrogen
✓ Official correct answer
D
Hydrogen
Community credibility
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A
Oxygen
No member explanations yet for this option.
B
Carbon dioxide
No member explanations yet for this option.
C
Nitrogen
No member explanations yet for this option.
D
Hydrogen
No member explanations yet for this option.
Explanation
Nitrogen makes up about 78% of the atmosphere.