Question

detergents factories near A.
10.) In which of the following, the identity of initial substance remains
unchanged?
(a) Curdling of milk
(b) Formation of crystals by process of crystallisation
(c) Fermentation of grapes
(d) Digestion of food

Answer: (b)​

Answer 1

Explanation:

Fermentation of grapes

(d) Digestion of food