Q. Soap is used for washing clothes. Why’?

A
It reduces the surface tension of water so that water easily gets in to the holes in cloths
B
It Increases the surface tension of water so that water easily gets in to the holes in cloths
C
It decreases the temperature of' water und increases its viscosity
D
It increases the temperature of water and increases its viscosity
Solution:

The chemical structure of soap These two parts of a soap molecule, given that they have a contrasting disposition towards water molecules, is why soap is so effective for washing clothes. The hydrophobic tail attaches itself to grime and dirt, while the hydrophilic head gets affixed to water molecules.

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