Which of the following is not a statement of second law of thermodynamics?
1
Energy can neither be produced nor destroyed.
2
The total entropy of a system either increases or remains constant in any spontaneous process, it never decreases.
3
It is impossible to transfer heat from lower temperature to higher temperature without any external work.
4
It is impossible for any device that operates in a cycle to receive heat from a single reservoir and produce a net amount of work
5
Question Not Attempted