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Q.

A:When 1g. of ice at 0οc is melted into 1g. of water at atmospheric pressure , then change in the internal energy is less than 80 calories.
R:During the melting of ice the work is done on the atmosphere as volume gets decreased.

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a

Both (A) and (R) are true and (R) is the correct explanation of (A) 

b

Both (A) and (R) are true but (R) is not the correct explanation of (A) 

c

(A) is correct  but (R) is not  correct

d

(A) is not correct  but (R) is correct

answer is C.

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Detailed Solution

During the melting  of ice, volume decreses 

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