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States of Matter

Which is more...

Question

Which is more effective in cooling?

Ice at

0^{0} C

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Water at

0^{0} C

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Water at

100^{0} C

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Ice at

100^{0} C

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Solution

The correct option is A Ice at $0^{0} C$
Ice is more effective than water in cooling liquids because ice needs additional energy to convert itself to water at zero degree celsius. Thus it absorbs more heat from the liquid system making the liquid system cooler so ice at $0^{0} C$ is cooler than water at $0^{0} C$ .

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[L_{i c e} = 80 c a l / g r a m a n d L_{s t e a m} = 540 c a l / g r a m]

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