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Why is bleaching powder used for removing colour?

Answer and explanation

Correct answer: It can provide available chlorine

The relevant concept is bleaching by oxidation. In the presence of moisture, bleaching powder releases available chlorine, which produces oxidising substances such as hypochlorous acid. These oxidise many coloured compounds and make them colourless. Therefore option A is correct. The other choices describe no chemical property responsible for bleaching and are unrelated to colour removal.

Related tags

Bleaching PowderAvailable ChlorineOxidationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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