Explain the following terms with suitable examples:
(i) Emulsion
(ii) Aerosol
(iii) Hydrosol
Or
How are the following colloids different from each other in respect of their dispersion medium and dispersed phase?
Give one example of each.
(i) Emulsion - (ii) Aerosol
(iii) Hydrosol
(i) An emulsion is a colloidal dispersion in which both
the dispersed phase and the dispersion medium are liquids, e.g. milk.
(ii) A colloid in which a liquid or a solid is dispersed in a
gas is known as aerosol, e.g. fog, mist.
(iii) Aqueous sol (hydrosol), i.e. sol in which a dispersed
phase is dispersed in water (dispersion medium), e.g. blood.