What happens when a hot saturated solution is cooled?

Compare in tabular form the properties of true solution and colloids with respect to Tyndall effect and stability.

Which of the two will scatter light: soap solution or salt solution?

$A$ little baby was playing in a park with his maid. Suddenly,he fell down and got a minor injury. The maid applied tincture of iodine on the wound.
$(a)$ Why did she apply tincture of iodine on the wound?
$(b)$ Name the solute and solvent present in tincture of iodine.
$(c)$ Enlist the values shown by the maid.

Explain the following giving examples.
$(a)$ Colloid
$(b)$ Suspension

What happens when a saturated solution is heated?