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Question

Identify the substance that is more effective in cooling.


A

Water at 0°C

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B

Water at 100°C

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C

Ice at 0°C

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D

Steam at 100°C

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Solution

The correct option is C

Ice at 0°C


Ice at 0C can be more effective in cooling because of the phenomenon called latent heat of fusion. It is the heat absorbed by the ice to change its state to water at 0C . So, ice at 0C can extract more heat from another substance and give better cooling.


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