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 motion electrolytes contain `Na^(oplus),Al^(3+)` and `Ca^(2+)` but only `Al` gets deposited at cathode because,A. Standard reduction potential of `Al` is more than those of `Na & Ca`B. Standard oxidation potential of `Al` is more than those of `Na & Ca`C. Graphite reacts only with `Al^(3+)` and not with `Na^(+) & Ca^(2+)`D. Discharge potential of `Al^(3+)` is higher than `Na^(+) & Ca^(2+)`

Extraction of aluminium can be understood by : Electrolytric reductio

1.	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 motion electrolytes contain `Na^(oplus),Al^(3+)` and `Ca^(2+)` but only `Al` gets deposited at cathode because,A. Standard reduction potential of `Al` is more than those of `Na & Ca`B. Standard oxidation potential of `Al` is more than those of `Na & Ca`C. Graphite reacts only with `Al^(3+)` and not with `Na^(+) & Ca^(2+)`D. Discharge potential of `Al^(3+)` is higher than `Na^(+) & Ca^(2+)`
Answer» Correct Answer - A