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GATE 2022 ME (ME1) – Question 23

Thermodynamics · Zeroth, first and second laws, work, heat and energy changes · 1 mark · Multiple choice

The Clausius inequality holds good for

  1. any process
  2. any cycle
  3. only reversible process
  4. only reversible cycle

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Show answer and explanation

Correct answer: (B) any cycle

Explanation

The Clausius inequality, $\oint\frac{\delta Q}{T} \le 0$, holds for any cycle, with the equality for a reversible cycle.