What do you understand by Tyndall effect ? Which of the following will show it ?

(a) salt solution

(b) milk

(c) copper sulphate solution

(d) starch solution

Explain the terms

(a) Solution

(b) solute

(c) solvent

Give three factors which affect the solubility of a solid solute in a solvent.

(a) If you are given some copper sulphate crystals, how would you proceed to prepare its saturated solution at room temperature?

(b) How can you show that your solution is really saturated?