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One faraday current is passed through mo...

One faraday current is passed through molten `Na_(2)O,MgO` and `Al_(2)O_(3)`. Moles of Na, Mg and Al formed at the cathode in each electrolytic cell are in the ratio

A

`1:2:3`

B

`3:2:1`

C

`2:1:2`

D

`6:3:2`

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