AIPMT 2009 Physics and Chemistry Paper

Question : 74 of 100

Marks: +1, -0

Al2O3 is reduced by electrolysis at low potentials and high currents. If 4.0×104 amperes of current is passed through molten Al2O3 for 6 hours, what mass of aluminium is produced ? (Assume 100\% current efficiency, at. mass of Al=27gmol−1 ) -