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Question

Which of the following is a reversible change?



A

Cutting stars out of paper.

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B

Baking bread.

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C

Orange juice is frozen to make ice lollies.

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D

Cutting trees

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Solution

The correct option is C

Orange juice is frozen to make ice lollies.


Orange juice, which is frozen into ice-lollies, can be melted to give back the orange juice. So, it is a reversible change.
All of the other changes are irreversible changes. Stars cut out from paper cannot be put together to get a full paper. Also, a baked bread cannot give back flour and after breaking a window pane, the glass pieces cannot be joined to give the exact window pane.


Chemistry

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