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Which pair gives the correct salt and its use?

Answer and explanation

Correct answer: Bleaching powder and disinfection of water

The governing concept is the relationship between the properties of salts and their practical uses. Bleaching powder releases chlorine or active chlorine and is used to disinfect drinking water by killing many disease-causing microorganisms. Sodium chloride is common salt, not a material for bone casts; plaster of Paris is used for casts, not for raising food batter; and washing soda is used in cleaning and softening water, not for producing acid rain. Hence A is correct.

Related tags

SaltsUsesBleaching PowderWater DisinfectionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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