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Which gas is used to prepare bleaching powder?

Answer and explanation

Correct answer: Chlorine

The governing concept is the preparation and use of bleaching powder, also called calcium oxychloride in school-level chemistry. Chlorine gas is passed over dry slaked lime, Ca(OH)₂, to form bleaching powder. Thus option B is correct. Hydrogen and nitrogen do not produce bleaching powder, while carbon dioxide is not the reacting gas in this preparation.

Related tags

Bleaching PowderChlorineSlaked LimeAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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