Question : How much percentage of oxygen is present in the atmosphere?
Option 1: 39%
Option 2: 79%
Option 3: 10%
Option 4: 21%
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Answer (1)
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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