(i) Cleansing action of soaps is based on the formation of emulsions.
(ii) Digestion of fats in intestines takes place by the process of emulsification.
(iii) When antiseptics and disinfectants are added to water they form emulsions.
(iv) The process of emulsification is used to make medicines.
Final Answer: (i) Cleansing action of soaps.
(ii) Digestion of fats in intestines.
(iii) Antiseptics and disinfectants when added to water form emulsions.
(iv)To make medicines.