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Surface Tension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsSurface Tension1 Mark
MCQ
Soap helps in cleaning clothes, because
  • A
    Chemicals of soap change
  • B
    It increases the surface tension of the solution
  • C
    It absorbs the dirt
  • ✓
    It lowers the surface tension of the solution
✓

Answer

Correct option: D.
It lowers the surface tension of the solution
(d) Soap helps to lower the surface tension of solution, thus soap get stick to the dust particles and grease and these are removed by action of water.

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