Enthalpy is defined as:

A Internal energy only

B H = U + PV (useful for constant-pressure processes)

C Work only

D Heat capacity

✓ Correct Answer: Option B

H = U + PV. At constant pressure, ΔH = Q. Convenient for open systems (flow processes).

💡 Why is B) the correct answer?

The correct answer to the question "Enthalpy is defined as:" is Option B: H = U + PV (useful for constant-pressure processes).

The other options — A) Internal energy only, C) Work only, D) Heat capacity — are incorrect for this FE Exam Prep question. As explained above: H = U + PV. At constant pressure, ΔH = Q. Convenient for open systems (flow processes).

📚 About This FE Exam Prep Practice Question

This 2-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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Enthalpy is defined as:

✓ Correct Answer: Option B

📚 About This FE Exam Prep Practice Question

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