Engineering Thermodynamics
Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

None of these
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.
It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

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Engineering Thermodynamics
First law of thermodynamics

Does not enable to determine change in entropy
All of these
Provides relationship between heat, work and internal energy
Enables to determine change in internal energy of the system

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