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Question

The amount of heat energy required to convert 1 kg of ice at 10C to water at 100C is 7,77,000 J. Calculate the specific latent heat of ice. Specific heat capacity of ice 2100Jkg1K1, specific heat capacity of water = 4200Jkg1K1.

A
3,360Jkg1
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B
33,600Jkg1
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C
33,60,000Jkg1
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D
3,36,000Jkg1
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Solution

The correct option is C 3,36,000Jkg1
heat required to raise temperature is Q
Q=777000J=1×2100×10+1×L+1×4200×100
L=336000Jkg1

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