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Chemistry
Which one is incorrect statement of the second law of thermodynamics ?
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Q. Which one is incorrect statement of the second law of thermodynamics ?
Thermodynamics
A
It is impossible for a cyclic process to transfer heat from a system at a lower temperature to one at a higher temperature without converting some work to heat
14%
B
It is impossible to convert heat completely into equivalent amount of work without producing changes elsewhere
44%
C
Every perfect machine working reversibly between the same temperatures of source and sink has the same efficiency whatever be the nature of the substance used
17%
D
Heat engines can be made 100% efficient
26%
Solution:
A heat engine cannot have 100% efficiency.