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NEETChemistryp Block Elements (Group 15, 16, 17 & 18)

Which of the following is a laboratory method for the preparation of dinitrogen?

Options

  1. AThe liquefaction and fractional distillation of air
  2. BThe treatment of an aqueous solution of ammonium chloride with sodium nitrite
  3. CThe thermal decomposition of ammonium dichromate
  4. DThe thermal decomposition of sodium or barium azide

Correct answer

A. The liquefaction and fractional distillation of air

Step-by-step solution

The paragraph states that dinitrogen can be prepared in the laboratory by treating an aqueous solution of ammonium chloride with sodium nitrite.

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