Physics-Entropy

NEET Physics Entropy MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Which of the following combinations about entropy is correct?

A

Entropy decreases when a liquid crystallizes into a solid; entropy increases when the temperature of a crystalline solid is raised from 0 K to 115 K.

B

Entropy increases when a liquid crystallizes into a solid; entropy decreases when the temperature of a crystalline solid is raised from 0 K to 115 K.

C

Entropy does not change during the isothermal expansion of an ideal gas; entropy increases for irreversible processes.

D

Entropy increases for both reversible and irreversible processes; entropy is independent of temperature changes.

Correct Answer

Option A

Detailed Explanation

Statement A is correct as the crystallization of a liquid into a solid leads to decreased entropy due to increased order, while raising the temperature from 0 K allows particle movement, thus increasing entropy.

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