1 Kg of water is pumped to a height of 10 m, the enthalpy is changed by 50 J/Kg,

Question

1 Kg of water is pumped to a height of 10 m, the enthalpy is changed by 50 J/Kg, and work done by the motor is 300 J/Kg, assuming system is insulated what is the change in internal energy of water?

Options:

A . 100 J

B . 150 J

C . 200 J

D . 300 J

Answer: Option B
Answer: (b).150 J

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