Q. Which is the second most abundant gas in Earth's atmosphere ?

  • (A) Oxygen
  • (B) Nitrogen
  • (C) Hydrogen
  • (D) Carbon dioxide
✅ Correct Answer: (A) Oxygen
Explanation: The most abundant naturally occurring gas is Nitrogen which makes up about 78% of air. Oxygen is the second most abundant gas at about 21%.

Published by Bhagwan Das ⭐ 4.44K Points at 09-Mar-2025 09:54 pm in Geography

Explanation by: Bhagwan Das
The most abundant naturally occurring gas is Nitrogen which makes up about 78% of air. Oxygen is the second most abundant gas at about 21%.

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