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Extraction of aluminium can be understoo...

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 increase eletrical consutivity

B

To lower the melting point `Al_(2)O_(3)`

C

To remove the impurities as slag

D

Both (a) & (B)

Text Solution

Verified by Experts

The correct Answer is:
d
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