Question

Which of the following change can be reversed?

• A. Breaking of a glass tumbler
• B. Stretching of a rubber band
• C. Cooking of food
• D. Chopping of onions

Answer 1

The correct option is B Stretching of a rubber band

The changes which occur for some definite amount of time and can be reversed are called temporary changes.
After stretching a rubber band, we can get it back in its original shape by removing the applied force. Hence this change can be reversed. In case of breaking of glass, cooking of food and chopping of onions, the changes which were done to them can not be reversed. Therefore they are permanent changes.