Rahul performed an experiment for the preparation of sulphuric acid. Answer the following questions pertaining to it.

(a) Name the process which is involved in this experiment used for the large scale manufacturing of sulphuric acid.

(b) Which property of sulphuric acid accounts for its use as a dehydrating agent?

(c) Concentrated sulphuric acid acts as both an oxidising agent and a non-volatile acid. Write one equation each to illustrate the above mentioned properties of sulphuric acid.

Name an alloy of:

(a) Aluminium used in aircraft construction

(b) Lead, used in electrical circuits in joining metals.

(c) Copper, in electrical appliances or household vessels.

Name the gas evolved in the following reactions:

(a) when calcium carbide is hydrolysed.

(b) when ethene undergoes hydrogenation.

Give the balanced chemical equations for the following reactions:

(a) Potassium sulphate from potassium hydroxide and sulphuric acid.

(b) Barium sulphate from barium chloride and sodium sulphate.

(c) Copper sulphate from copper and concentrated sulphuric acid.