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

1623Medium DSSSB TGT Computer Science 0 replies 1 views
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Which gas is the most abundant in the Earth's atmosphere?

  • ANitrogen
  • BOxygen
  • CCarbon dioxide
  • DArgon
Correct answer: A

Explanation

Nitrogen makes up about 78% of dry air by volume, while oxygen is about 21%.
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