State what is potable water. Give its characteristics which make it fit for human consumption.

Give a reason why water is called a 'universal solvent' but, an alkali is not.

Name the solute, solvent & solution in the statement - 'potassium chloride dissolves in water to give potassium chloride solution'. Define each of the terms in italics.

Explain how each of the following factors affects the formation of a solution

(a) Proportion of - solute & solvent

(b) Particle size of the solute

(c) Temperature of the solvent.