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Question

Heat required to convert one gram of ice at 0C into steam at 100C is (given Lstream = 536 cal/gm)


A

100 calorie

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B

0.01 kilo calorie

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C

716 calorie

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D

1 kilo calorie

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Solution

The correct option is C

716 calorie


Conversion of ice ( 0C ) into steam ( 100C ) is as follows

Heat required in the given process = Q1+Q2+Q3

= 1×80+1×1×(1000)+1×536=716cal


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