State what is observed when – Ammonium hydroxide is first added in a small quantity and then in excess to a solution of copper sulphate.

State your observation – Water is added to the product formed, when Al is burnt in a jar of nitrogen gas.

The diagram shows set up for the lab. preparation of a pungent alkaline gas.

(i) Name the gas collected in the jar.

(ii) Give a balanced equation for the above preparation

(iii) State how the above gas is collected?

(iv) Name the drying agent used.

(v) State how you will find out that the jar is full of the pungent gas?

Name the gas produced when excess ammonia reacts with chlorine.