Physics · Physics
Why does a drop of oil spread out on a water surface?
- 1Because the surface tension of oil is less than that of water.✓
- 2Because the surface tension of oil is greater than that of water.
- 3Because oil is soluble in water.
- 4Because the density of oil is less than that of water.
Correct answer
Because the surface tension of oil is less than that of water.
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