Question

Answer this question fast.
It's urgent
(With explanation)​

Answer 1

Answer:

Yes souring of milk is a chemical change.

Explanation:

This is because when we add a little curd to warm milk, then lactobacillus bacteria present inside the curd converts the lactose sugar in milk to lactic acid. This gives us the sour taste and this curd is formed

Answer 2

Answer:

In source of milk is chemical change