Air Composition
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Questions and Answers

What is air primarily composed of?

  • Nitrogen and oxygen (correct)
  • Oxygen and helium
  • Carbon dioxide and nitrogen
  • Oxygen and carbon dioxide

    • Which gas is the most abundant in air?

  • Oxygen
  • Nitrogen (correct)
  • Argon
  • Carbon dioxide

    • What is the approximate percentage of oxygen in the air?

  • 78%
  • 42%
  • 1%
  • 21% (correct)

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