Question

Why is setting of curd a chemical change?​

Answer 1

Answer:

Setting of the curd is a chemical change because there is a new substance formed.

Explanation:

Lactobacilli converts lactose the sugar in the milk into lactic acid as a result the pH of milk decreases causing coagulation of milk proteins the milk is changed into curd it is a chemical change because a new substance is formed from milk.

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Answer 2

Answer:

Setting of curd is a chemical change because a new substance(lactic acid) is formed. The curd formed has a different taste than the original substance. Also, once the curd is formed, milk cannot be re-obtained from it. It is an irreversible change.

Explanation:

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