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Why is bleaching powder useful for disinfecting water?

Answer and explanation

Correct answer: It can provide available chlorine

The governing concept is chemical disinfection by available chlorine. When bleaching powder comes into contact with water, it releases chlorine or chlorine-containing species that form hypochlorous acid. These reactive species damage and kill many disease-causing microorganisms. The effect is not related to sweetness, conversion into a metal, or freezing, so option A correctly explains its use.

Related tags

Bleaching PowderDisinfectionAvailable ChlorineAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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