Multiple choice

Nitrogen can be obtained by heating

  1. ammonium chloride & sodium nitrite

  2. ammonium chloride & sodium nitrarte

  3. ammonium suplhate & caustic soda solution

  4. ammonium carbonate

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitrogen is produced in the laboratory by heating ammonium chloride (NH4Cl) with sodium nitrite (NaNO2), producing NaCl, N2, and H2O. This is a standard nitrogen preparation method. Option B has a typo (nitrarte), and options C and D don't produce nitrogen gas.