Surface tension of a liquid_________________?
Correct answer: D. All A, B. & C
- A. Is due to intermolecular forces of cohesion
- B. Decreases with rise in temperature
- C. Is responsible for the spherical shape of an isolated liquid drop
- D. All A, B. & C
Explanation
All three statements describe surface tension: cohesive molecular forces produce it, increasing temperature reduces it, and minimising surface area makes a free liquid drop spherical. Therefore the combined option is required.
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