2 kg of ice at −20oC is mixed with 5 kg of water at 20oC. The water content of the final mixture is (Latent heat of fusion =80 kcal/kg, specific heat of water =1 kcal/kg-oC, specific heat of ice =0.5 kcal/kg- oC.
A
7 kg
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B
6 kg
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C
4 kg
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D
3 kg
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