The following questions refer to the electroplating of an article with silver:

(a) Name the electrode formed by the article to be plated.

(b) Name the electrolyte used.

(c) Silver nitrate is a good electrolyte. Why it is not used?

An organic compound X has the following composition: O = 71.19% H= 2.22 %

[At. mass C = 12 H = 1 O = 16 ]

(a) Find its empirical formula.

(b) If in the gaseous state, its vapour density is 45. Find its molecular formula.

Distinguish the following by a chemical test:

(a) Ammonia solution and hydrogen chloride gas solution.

(b) Saturated and unsaturated compounds.

(c) Ferrous chloride and ferric chloride.

Select the correct property of sulphuric acid given in column A which relates to the respective conversions given in column B.