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People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?

Answer :

As we know soaps and detergents form a micelle around the oily dirt particle but it still forms a colloid.To remove dirt in the form of micelles from clothes agitation helps to loosen the dirt particle and is necessary to get clean clothes.

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