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Question

What method is adopted for the industrial preparation of nitrogen?


  1. Heating mixture of ammonium chloride and sodium nitrate

  2. Breakdown of nitric oxide

  3. Breakdown of nitrogen dioxide

  4. Fractional distillation 


Solution

The correct option is D

Fractional distillation 


Fractional distillation is used to obtain nitrogen from the atmosphere. Due to the characteristic boiling point of gases, nitrogen can be separated by gradually cooling the sample it liquifies.

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