When water at 0oC freezes to form ice at the same temperature, then it:
A
absorbs some heat
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B
releases some heat
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C
neither absorbs nor releases heat
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D
Both A and B
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Solution
The correct option is D releases some heat When the liquid water turns to solid ice we find that water freezes without getting any colder. That's because the latent heat of fusion is being lost from the liquid as it solidifies and the temperature of the water does not fall so quickly.