1.

In the metallurgy of aluminium when the fused matrix is electrolyzed , the overall reduction reaction is :

Answer»

`Al_2O_3 +3C RARR 2Al+3CO`
`Al_2O_3 rarr2Al^(3+)+3O_2`
`2Al_2O_3+3Crarr3Al+3CO_2`
`Al_2O_3+2COrarr 2Al+2CO_2`

ANSWER :C


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