MCQ
Soap helps in cleaning clothes, because
- AChemicals of soap change
- BIt increases the surface tension of the solution
- CIt 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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