Question

change of bud into a flower is a change which cannot be reversed. Give more such example ​

Answer 1

Answer:

Burning of paper, formation of curd from milk and cooking of vegetables are irreversible changes.

Hope it helps.

Answer 2

Answer:

It is chemical change.

e.g. After burning of paper or wood it's blacky substance which remain after burning cannot be returned in that paper or wood.