The molecules that are present only at the surface of a liquid can undergo evaporation.

Name: The molecules that are present only at the surface of a liquid can undergo evaporation.
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Quizplus · Accepted Answer

This is true. The molecules present only at the surface of a liquid are called surface molecules or surface layer. Since these molecules have higher energy, they can break free from the surface and go into the atmosphere, which is called evaporation.

The Molecules That Are Present Only at the Surface of a Liquid