Question

Which one of the following is a reversible change
(a) tearing of paper
(b) blowing air in a balloon
(c) breaking of stick
(d) baked chapati ​

Answer 1

Answer:

B is the reversible change

Answer 2

Blowing air in a balloon is a reversible change. (option b)

• The tearing of the paper cannot be undone because we cannot get the intact paper after tearing. So, it's an irreversible change.
• Same goes for the breaking of a stick and it is also an irreversible change.
• Baked chapati cannot be undone to make flour again, that's why it's also an irreversible change.
• Blowing air in a balloon can be undone by simply, open the mouth of the balloon to make a way out for the internal air. So, it's a reversible change.