question_answer

            A carnot freezer takes heat from water at \[^{o}C\] inside it and rejects it to the room at a temperature of \[{{27}^{o}}C\]. The latent heat of ice is\[336\times {{10}^{3}}J\,k{{g}^{-1}}\]. If 5 kg of water at \[{{0}^{o}}C\]is converted into ice at \[{{0}^{o}}C\]by the freezer, then the energy consumed by the freezer is close to:                                                                                         [JEE ONLINE 10-04-2016]

A)  \[1.68\times {{10}^{6}}J\]      

B)       \[1.71\times {{10}^{7}}J\]

C)  \[1.51\times {{10}^{5}}J\]      

D)       1\[1.67\times {{10}^{5}}J\]

Correct Answer: D

Solution :

[d]

heat required to freeze 5 kg water

Joule

for can not’s cycle