AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
In the chlor-alkali process, electrolysis of brine (aqueous NaCl solution) produces:
(Sodium hydroxide solution is also formed near the cathode.)
Source: Acids, Bases and Salts, Chapter 2
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The examiner expects you to correctly identify which gas at which electrode — this is where marks are distributed (1 mark each). Remember the mnemonic: Anode → Chlorine (AC), Cathode → Hydrogen. NaOH is a bonus point sometimes asked separately. The source passages don't detail this reaction, but it is a standard NCERT Chapter 2 (Acids, Bases and Salts) topic on uses of sodium chloride — ensure you recall it from the textbook directly.