RRB Paramedical Staff Nurse Model Paper 5

Question : 90 of 100

Marks: +1, -0

In laboratory ammonia is prepared by heating

Ammonium chloride with calcium hydroxide
Ammonium chloride with sodium hydroxide
Nitrogen and hydrogen
Calcium cyanamide with water

Solution:

On a small scale ammonia can be prepared by treating ammonium chloride or ammonium sulphate with sodium hydroxide or calcium hydroxide. It is also prepared by hydrolysis of magnesium nitride.

{NH}_{4} {Cl}+ {NaOH} → {NH}_{3}+ {NaCl}+ {H}_{2} {O}

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