alleryThe Kelvin-Planck statement rules out converting heat completely into:
ALight
BSound
CWork
DMass
Answer & Solution
Correct answer: C. Work
1. A reservoir supplies heat to the engine.
2. The statement forbids one particular outcome.
3. No process can turn that heat completely into work.
_Source: syllabus Physics Part II, Chapter 12, Thermodynamics._
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