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
(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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