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Question

The most abundant constituent of air is


  1. Oxygen

  2. Nitrogen

  3. Water vapour

  4. Impurities


Solution

The correct option is B

Nitrogen


The most abundant constituents of air is Nitrogen. The constituents of air are:

Pure Gas NameSymbolMole FractionNitrogenN20.78084OxygenO20.209476ArgonAr0.00934CarbondioxideCO20.000314

Water vapor is also an important constituent which varies from region to region.

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