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Question

# Statement 1: 320 calories or 1.34×103 joules of heat will melt 4 grams of ice at 0oC.Statement 2: The heat of fusion of water is 80 calories per gram or 3.34×102 joules per gram.

A

Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

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B

Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.

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C

Statement 1 is correct but Statement 2 is not correct.

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D

Statement 1 is not correct but Statement 2 is correct.

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E

Both the Statement 1 and Statement 2 are not correct.

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Solution

## The correct option is A Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1. Statement 1: 320 calories or 1.34×103 joules of heat will melt 4 grams of ice at 0oC.Statement 2: The heat of fusion of water is 80 calories per gram or 3.34×102 joules per gram.Melting of 1 g of ice will require 3.34×102 joules.Melting of 1 g of ice will require 4×80=320 calories.Melting of 1 g of ice will require 80 calories.Melting of 1 g of ice will require 4×3.34×102=1.34×103 joules.Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

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