In the electrolysis of **molten** NaCl, the products at the cathode and anode respectively are:
AH₂ at cathode and O₂ at anode
BNa at cathode and Cl₂ at anode
CH₂ at cathode and Cl₂ at anode
DNa at cathode and O₂ at anode
Answer & Solution
Correct answer: B. Na at cathode and Cl₂ at anode
Molten NaCl has only Na⁺ (reduced at cathode → Na) and Cl⁻ (oxidised at anode → Cl₂). No water, no H₂ or O₂. **Na metal and Cl₂ gas** — this is how Na is industrially produced (Down's process).
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