C-10-Q071mediumsingle_mcqAnode reaction in aluminium electrolysis is—a6O2−→3O2+12e−\mathrm{6O^{2-} \to 3O_2 + 12e^-}6O2−→3O2+12e−b2Al3++6e−→2Al\mathrm{2Al^{3+} + 6e^- \to 2Al}2Al3++6e−→2AlcNa++e−→Na\mathrm{Na^+ + e^- \to Na}Na++e−→Nad2H2O→O2+4H++4e−\mathrm{2H_2O \to O_2 + 4H^+ + 4e^-}2H2O→O2+4H