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Question 31039
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Kinetic Theory and Thermodynamics: Second Law MCQ

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Second LawHardQuestion 31039

Question

Kelvin-Planck statement of second law says:
  1. A
    No heat engine can work in cycles with 100% efficiency
    Correct
  2. B
    No process can convert work to heat
  3. C
    Entropy always decreases
  4. D
    Temperature is undefined below 0 K

Correct answer

No heat engine can work in cycles with 100% efficiency

Explanation

Kelvin-Planck: It is impossible to construct a heat engine that, operating in a cycle, converts all absorbed heat into work.

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