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Which gas is passed over dry slaked lime in the manufacture of bleaching powder?

Answer and explanation

Correct answer: Chlorine

Bleaching powder is manufactured by passing chlorine gas over dry slaked lime, calcium hydroxide. In simplified form, the process is represented as calcium hydroxide reacting with chlorine to produce bleaching powder along with other products. Thus option C is correct. Hydrogen, carbon dioxide, and oxygen are not the characteristic reactant gases used for this preparation, so they cannot explain the manufacture of bleaching powder.

Related tags

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

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