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During extraction of aluminium from bauxite,

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molten mixture of aluminium oxide, cryolite and fluorspar is electrolysed

impure aluminium is refined by liquation

molten aluminium is obtained at cathode while fluorine is liberated at anode.

the concentration of ore is done by gravity separation method

answer is B.

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molten mixture of aluminium oxide, cryolite and fluorspar is added to lower melting point and increase the conductivity .

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