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Which product obtained from common salt is useful in soap and paper industries?

Answer and explanation

Correct answer: Sodium hydroxide

The governing process is the chlor-alkali process. When an aqueous solution of common salt, sodium chloride, is electrolysed, sodium hydroxide is formed along with chlorine and hydrogen: 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. Sodium hydroxide is a strong alkali used to make soap through saponification and is also important in paper manufacture. The other listed substances are not the relevant product of this process, so A is correct.

Related tags

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

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