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Question

A small amount of ice is placed in water at 00C. It is observed that small amount of water freezes (i.e., amount of ice increases). Why?


A

As the ice at 00C absorbs heat when it is placed in water at 00C

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B

As the ice liberates heat when it is placed in water at 00C

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C

As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 00C

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D

As the ice must be at a temperature above zero and it absorbs heat when it is placed in water at 00C

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E

As the ice must be at a temperature above zero and it liberates heat when it is placed in water at 00C

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Solution

The correct option is C

As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 00C


The temperature of the ice must be lesser than 00C, only then it can absorb heat from water at 00C and convert some of it into ice.


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