NEET Physics Surface Tension MCQ Question
Which of the following statements about surface tension is correct?
Molecules at the surface of a liquid have higher energy than those in the bulk due to reduced interactions.
Surface tension only affects liquids that are in contact with gases.
The surface tension of a liquid decreases with an increase in temperature.
Surface tension is independent of the molecular structure of the liquid.
Correct Answer
Detailed Explanation
Molecules at the surface of a liquid experience different attractive forces compared to those in the bulk, leading to higher energy states as stated in the NCERT context. This concept explains why surface tension exists.
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