Which technique is used in the manufacture of | vedclass

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(C) The extraction of aluminium from bauxite involves the $Hall-Heroult$ process. In this process,purified alumina $(Al_2O_3)$ is dissolved in molten

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Electrolytic reduction

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(C) The extraction of aluminium from bauxite involves the $Hall-Heroult$ process. In this process,purified alumina $(Al_2O_3)$ is dissolved in molten cryolite $(Na_3AlF_6)$ and fluorspar $(CaF_2)$,which lowers the melting point of the mixture and increases conductivity. Aluminium is then obtained by $Electrolytic 	ext{ } reduction$ of the molten mixture.

Which technique is used in the manufacture of aluminium from bauxite?

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