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Multiple Choice Question

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

  • A
    Oxygen
  • B
    Carbon Dioxide
  • C
    Nitrogen
  • D
    Hydrogen
Explanation:
Nitrogen makes up about 78% of the Earth's atmosphere.
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This question belongs to the set "SSC/DSSSB Practice test set 2 (previous year Questions – SSC CGL 2018)". Click below to read detailed notes and attempt the full quiz.

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