Chemical Engineering Thermodynamics
The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same.

Kinematic viscosity
Work
None of these
Temperature

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Chemical Engineering Thermodynamics
The second law of thermodynamics states that

The total energy of system and surrounding remains the same
None of these
It is not possible to transfer heat from a lower temperature to a higher temperature
The energy change of a system undergoing any reversible process is zero

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