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Which process is used to obtain sodium hydroxide from common salt?

Answer and explanation

Correct answer: Chlor-alkali process

Common salt, sodium chloride, is dissolved in water to prepare brine. During electrolysis of brine, chloride ions form chlorine at the anode, hydrogen is produced at the cathode, and sodium hydroxide remains in solution. Because the process produces chlorine and an alkali, it is called the chlor-alkali process. Crystallisation and evaporation only separate substances physically, while acid rain is unrelated. Hence, option B is correct.

Related tags

Common-SaltSodium-HydroxideChlor-Alkali-ProcessElectrolysisAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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