Which of the following results in a decrease in the entropy?

A) Heating ice

B) Increasing mass

C) Cooling a liquid

D) Dissolving salt in water

C) Cooling a liquid

Explanation:

The entropy of an object measures the amount of energy that is not available to do work. Entropy decreases as temperature decreases. Entropy depends upon movement and collision of the molecules. Cooling liquid results in a decrease in entropy because, with a decrease in temperature, randomness between molecules also decreases. As a result, entropy decreases.

Option C) is correct.