The Clausius inequality states:

A Entropy always decreases

B ∮δQ/T ≤ 0 for any cyclic process (equality for reversible)

C Q = W always

D Temperature is constant

✓ Correct Answer: Option B

Clausius: cycle integral of δQ/T ≤ 0. For reversible cycle, = 0. For irreversible cycle, < 0. Basis of entropy concept.

💡 Why is B) the correct answer?

The correct answer to the question "The Clausius inequality states:" is Option B: ∮δQ/T ≤ 0 for any cyclic process (equality for reversible).

The other options — A) Entropy always decreases, C) Q = W always, D) Temperature is constant — are incorrect for this FE Exam Prep question. As explained above: Clausius: cycle integral of δQ/T ≤ 0. For reversible cycle, = 0. For irreversible cycle, < 0. Basis of entropy concept.

📚 About This FE Exam Prep Practice Question

This 3-level FE Exam Prep question from the Thermodynamics topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free FE Exam Prep practice test or use flashcards for spaced repetition review.

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The Clausius inequality states:

✓ Correct Answer: Option B

📚 About This FE Exam Prep Practice Question

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