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In the commercial electrochemical proces...

In the commercial electrochemical process for aluminium extraction, the electrolyte used is

A

`Al(OH)_(3)` in NaOH solution

B

an aqueous solution of `Al_(2)(SO_(4))_(3)`

C

a molten mixture of `Al_(2)O_(3) and Na-(3)AlF_(6)`

D

a molten mixture of `AlO(OH) and Al(OH)_(3)`.

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The correct Answer is:
C
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