Question

For the electrolytic refining of aluminium, the three fused layers consist of

Accepted Answer

Bottom layer - Anode of impure $Al$, Middle layer - Cryolite and barium fluoride, Upper layer - Cathode of pure $Al$

Answer

Bottom layer - Cathode of pure $Al$, Middle layer - Cryolite and fluorspar, Upper layer - Abode of $Al$ and $Cu$ alloy

Answer

Bottom layer - Cathode of $Al$ and $Cu$ alloy, Middle layer - Bauxite and cryolite, Upper layer - Anode of pure $Al$

Answer

Bottom layer - Anode of $Al$ and $Cu$ alloy, Middle layer - Bauxite, cryolite and fluorspar, Upper layer - Cathode of pure $Al$

JEE CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

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