Soap cannot be used with hard water, because ____________... — Answer & Explanation | PrepBeePakistan

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HomeMCQsChemical Engineering

MEDIUMENGLISHChemical Engineering

Soap cannot be used with hard water, because _________________?

Correct answer: B

Explanation

Hard water contains dissolved minerals like calcium and magnesium. Soap reacts with these to form insoluble soap scum (calcium/magnesium soaps), which reduces cleaning effectiveness.

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