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Question 31040
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Kinetic Theory and Thermodynamics: Entropy MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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EntropyHardQuestion 31040

Question

When 100 g of ice melts at 0°C (latent heat = 336 J/g), entropy change of ice is:
  1. A
    123 J/K
    Correct
  2. B
    336 J/K
  3. C
    0 J/K
  4. D
    −123 J/K

Correct answer

123 J/K

Explanation

ΔS = Q/T = (100 × 336)/273 ≈ 123 J/K. Temperature must be in Kelvin.

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