Common salt (NaCl) is the raw material for the chlor-alkali process, which produces sodium hydroxide, hydrogen and

1. Electrolysis of brine (concentrated NaCl solution) is the chlor-alkali process. 2. It gives **NaOH** (at the cathode side), **hydrogen** at the cathode and **chlorine** at the anode. 3. 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. _Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch2 'Acids, Bases and Salts', §2.4_