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Which substance obtained from common salt is useful as an important base in paper and soap industries?

Answer and explanation

Correct answer: Sodium hydroxide

Aqueous common salt, sodium chloride, undergoes electrolysis in the chlor-alkali process: 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. The sodium hydroxide formed is a strong base used in making soap, paper, and several chemicals. Calcium carbonate, ammonium chloride, and copper sulphate are different compounds and are not the important base obtained in this process. Therefore option A is correct.

Related tags

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

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