Question

In which of the following chemical changes the initial substance remains

unchanged?

i) Curdling of Milk

ii) Formation of crystals by crystallization

iii) Fermentation of grapes

iv) Digestion of food​

Answer 1

Answer:

2nd one

Explanation:

because the chemical of sugar has changed but intial substance is still. remained

Answer 2

Answer:

option b is the correct answer

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