Question

7. Formation of curd from milk is a ________ change.

Answer 1

Formation of curd from milk is an irreversible change.

• A change that cannot be reversed or cannot get back to its original state is called a irreversible change.
• Milk can be converted to curd using lactic acid bacteria and is called curdling.
• But curd cannot be reversed back to milk.

Therefore, formation of curd from milk is a irreversible change.