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Question

Which statement is true about 2nd law of Thermodynamics?


  1. Heat can be converted to into work without changes in system or surroundings
  2. All spontaneous process are thermodynamically reversible
  3. It is possible to construct a perpetual motion machine of second kind
  4. All spontaneous process are thermodynamically irreversible

A
Heat can be converted to into work without changes in system or surroundings
B
All spontaneous process are thermodynamically irreversible
C
All spontaneous process are thermodynamically reversible
D
It is possible to construct a perpetual motion machine of second kind
Solution
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2nd law of Thermodynamics states that all spontaneous process are irreversible

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