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Extraction of aluminium can be understood by : Electrolytric reduction of `Al_(2) O_(3)` : Electrolysis : `Al_(2) O_(3) + Cryolite + CaF_(2)` Cathode : Carbon inside the `Fe` container Anode : Graphite rods. The purpose of adding cryolite is.A. to decrease the electrical conductivity of pure aluminiumB. to lower the melting point of `AI_(2)O_(3)`C. to remove the impurities as slagD. to increase the `Al%` in the yield |
Answer» Correct Answer - B | |