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Question : How much percentage of oxygen is present in the atmosphere?

Option 1: 39%

Option 2: 79%

Option 3: 10%

Option 4: 21%


Team Careers360 8th Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: 21%


Solution : The correct option is 21% .

Earth's atmosphere is composed of several gases, with the two most abundant being nitrogen and oxygen.

The approximate composition is:

  • Nitrogen: ~78%
  • Oxygen: ~21%
  • Argon: ~0.93%
  • Carbon dioxide: ~0.04%
  • Neon, Helium, Methane, Krypton, Hydrogen, Xenon, and others: trace amounts.
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