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People use variety of methods to wash cl...

People use 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 agitation is necessary to get clean clothes clothes?

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By the reaction of soap with the calcium and magnesium salts, foam is formed. This foam captures dust particles but also sticks to cloth. To remove them from cloth, is necessary.
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