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When CaF(2) is added to pure Al(2)O(3) i...

When `CaF_(2)` is added to pure `Al_(2)O_(3)` in the extraction of aluminium by Hall and Heroult process -

A

the melting point of `Al_(2)O_(3)` reduces

B

conductivity of the molten mixture increases

C

`Al^(3+)` is reduced to Al(s)

D

`CaF_(2)` acts as a catalyst

Text Solution

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The correct Answer is:
A, B
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