Surface tension in a liquid is caused by?
Correct answer: C. reduced rate of intermolecular collisions at the surface
- A. lack of horizontal intermolecular forces
- B. greater rate of evaporation at the surface than from the interior
- C. reduced rate of intermolecular collisions at the surface
- D. greater fluidity
Explanation
The surface tension in the liquid is caused by intermolecular forces at the surface of the molecule that tend to keep the surface molecules close together, avoiding them to collide, as mentioned in option C.
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