ISRO Mechanical & Aerospace 2017-2 - Question 42

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Topic: Thermodynamics

The entropy of a hot baked potato decreases as it cools.

  • A. The above statement is correct
  • B. The above statement is incorrect as it violates the increase in entropy principle
  • C. Too less information to comment
  • D. The above statement is incorrect as it violates second law of thermodynamics

Answer: A. The above statement is correct

Explanation: The entropy of a hot baked potato decreases as it cools because heat is being transferred away from it. This does not violate the second law of thermodynamics; the heat transferred to the surrounding air increases the entropy of the surroundings by a greater amount, so the total entropy of the universe still increases.

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