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Hall-Heroult's process is given by :...

Hall-Heroult's process is given by :

A

`Cu^(2+)(aq)+H_(2)(g)toCu(s)+2H^(+)(aq)`

B

`Cr_(2)O_(3)+2Al to Al_(2)O_(3)+2 Cr`

C

`2Al_(2)O_(3)+3C to 4Al+3CO_(2)`

D

`ZnO+C overset("Coke, 1673 K")(to)Zn+CO`

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