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Q:

Which of the following is the correct descending order of volume percentage of gases in atmospheric composition?

  • 1
    Oxygen - Hydrogen - Argon - Carbon Dioxide
  • 2
    Hydrogen - Argon - Carbon Dioxide - Oxygen
  • 3
    Hydrogen - Carbon Dioxide - Argon - Oxygen
  • 4
    None of these
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Answer : 3. "Hydrogen - Carbon Dioxide - Argon - Oxygen"

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