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प्रश्न
Give reasons for the following
Ordinary soap is wasted in hard water.
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उत्तर
Ordinary soap is wasted in hard water because hard water is one which does not lather with soap.
संबंधित प्रश्न
Give two examples of the following substance.
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Choose the correct alternative from the choices given below for the following statement:
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Give reasons for the following
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