(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?

What is the effect of temperature on solubility of KNO₃ and CaSO₄ in water?

Which test will you carry out to find out if a given solution is saturated or unsaturated or supersaturated?

What happens when a saturated solution of nitre (KNO₃) prepared at 60°C is allowed to cool at room temperature ?