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To remove the suspended impurities from water at home the substance used is
Pollution of Air and Water
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21/05/2021 11:45 am
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To remove the suspended impurities from water at home the substance used is
(a) potash alum
(b) chlorine
(c) potassium dichromate
(d) salt
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21/05/2021 11:45 am
(a) potash alum
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