Which amongst the following are reversible changes?

Tearing of paper

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Freezing of water

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Melting of wax

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Bursting of balloon

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Solution

The correct option is C Melting of wax
Reversible changes are those which can be undone.
$∙$ Freezing of water can be reversed by heating and melted wax can be obtained back by cooling. Therefore they are reversible in nature.
$∙$ We cannot get the paper or balloon back in their original state. Thus, these are irreversible changes.

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