Glycerol is added to soap. It functions ….

a. As a filler

b. To increases leathering

c. To prevent rapid drying

d. To make soap granules

Ans. c

Explanation : Glycerol is added to shaving soap to prevent rapid drying while to enhance the leathering property of soap a gum called rosin is added to them It forms sodium rosinate which lathers well soap granules are dried miniature soap  bubbles. Builders / fillers make the soap act more rapidly.