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Q.

A copper block of mass 2 kg is heated through a temperature of 2000C and is placed on a large ice block. What is the maximum amount of ice that can melt? [Specific heat of copper 0.39 J g-1 0C-1 and latent heat of fusion of water is 335 J g-1]

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a

0.465 kg

b

465 kg

c

4.65 kg

d

46.5 kg

answer is C.

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Detailed Solution

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Heat lost by copper is heat gained by ice

2000×0.39×(2000)=m×335m=465g=0.465kg

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A copper block of mass 2 kg is heated through a temperature of 2000C and is placed on a large ice block. What is the maximum amount of ice that can melt? [Specific heat of copper 0.39 J g-1 0C-1 and latent heat of fusion of water is 335 J g-1]