Question

Say true or false
Q.B. Say whether true or false.
1. Setting of curd is a chemical change.
2. Burning of wood and cutting it into small pieces are two different types of changes.
3. Blowing of a balloon is a fast irreversible change.
4. Chopping of vegetables is a reversible physical change.

Answer 1

Dear Student

1. True. Milk changing to curd is a chemical process.
2. True. Burning of food is chemical process and cutting of food is physical process.
3. False. Blowing of balloon is slow reversible process as air from balloon deflates with time slowly.
4. False. Chopping of vegetable is irreversible physical change.