State your observation in the following case:

When calcium hydroxide is heated with ammonium chloride crystal.

 State one relevant observation for the following:
 when ammonia gas is burnt in an atmosphere of excess oxygen.

Fill in the blank with the choice given within bracket:

Ammonia gas is collected by.............................(an upward displacement of air, a downward displacement of water, a downward displacement of air).

Write balanced equation for the following:

The action of warm water on magnesium nitride.

State your observation in the following case:

When calcium hydroxide is heated with ammonium chloride crystal.

Name the other ion formed when ammonia dissolves in water.

State one appropriate to observation for each of the following:

Excess of chlorine gas is reacted with ammonia gas.

Choose the most appropriate answer to form the following options:

Nitrogen gas can be obtained by heating:

Give balanced equations for each of the following:

Reducing of hot Copper (II) oxide to copper using ammonia gas.

Copy and complete the following table relating to important industrial process:

Identify the following substance which is underlined:
An alkaline gas which produces dense white fumes when reacted with hydrogen chloride gas.