Question

which change is related with souring of milk​

Answer 1

Answer:

Chemical change requires a change on the molecular level so that it cannot be reversed because they form some new substance. Souring of milk is a reverse process and it produces new molecules. Another example of chemical change - Creation of new gas, bubbles, or changes in color like a formation of rust.

Answer 2

Answer:

Permanent change

Explanation:

Because when the milk undergoes in sour it does not get its original taste