Aluminium oxide may be electrolysed at 1000^oC to furnish aluminium metal (Atomic
mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is Al³⁺ + 3e⁻ Al^o To prepare 5.12 kg of aluminium metal by this method would require
JEE Main 2005 · Annual, Paper 1 · Q926