With increase in temperature, the surface tension of water _____________________?
Correct answer: B. Decreases
- A. Increases
- B. Decreases
- C. Remain constant
- D. Increases linearly
Explanation
Heating increases molecular motion and weakens the cohesive effect responsible for surface tension at the liquid surface. Consequently, water’s surface tension decreases as temperature rises and approaches zero at the critical point.
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