Multiple choice

Air is a mixture of various gases of different densities. Which among the following is the lightest gas in air, in terms of density?

  1. Nitrogen

  2. Water vapour

  3. Oxygen

  4. Carbon dioxide

  5. Argon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Water vapour is the lightest gas in air, in terms of density.

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