The first law of thermodynamics states that:

A Entropy always increases

B Energy cannot be created or destroyed

C Heat flows from hot to cold

D Absolute zero is unattainable

✓ Correct Answer: Option B

The first law (conservation of energy): ΔU = q + w. Energy is conserved; it can be transferred or converted but not created or destroyed.

💡 Why is B) the correct answer?

The correct answer to the question "The first law of thermodynamics states that:" is Option B: Energy cannot be created or destroyed.

The other options — A) Entropy always increases, C) Heat flows from hot to cold, D) Absolute zero is unattainable — are incorrect for this MCAT Exam Prep question. As explained above: The first law (conservation of energy): ΔU = q + w. Energy is conserved; it can be transferred or converted but not created or destroyed.

📚 About This MCAT Exam Prep Practice Question

This 1-level MCAT Exam Prep question from the Chemical & Physical Foundations 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 MCAT Exam Prep practice test or use flashcards for spaced repetition review.

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The first law of thermodynamics states that:

✓ Correct Answer: Option B

📚 About This MCAT Exam Prep Practice Question

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