Question

From the options given below, identify the correct statement(s) regarding the laboratory preparation of ammonia.

Reaction between ${\mathrm{NH}}_4\mathrm{Cl}$ and $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$ gives metal salt.
Ammonia is collected by upward displacement of air.
$\mathrm{CaO}$ is used to add moisture in ammonia.
Ammonia is obtained in gaseous state.

Answer 1

Reaction between ${\mathrm{NH}}_4\mathrm{Cl}$ and $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$ gives metal salt.	True
Ammonia is collected by upward displacement of air.	False
$\mathrm{CaO}$ is used to add moisture in ammonia.	False
Ammonia is obtained in gaseous state.	True