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Mass Energy Equivalence

If mass energ...

Question

If mass energy equivalence is taken into account, when water is cooled to form ice, the mass of water should

A

Increase

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B

Remain unchanged

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C

Decrease

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D

First increase then decrease

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Solution

The correct option is B Remain unchanged
When water is cooled at $0^{\circ} C$ to form ice then 80 calorie/gm (latent heat) energy is released. Because potential energy of the molecules decreases. Mass will remain constant in the process of freezing of water.

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