Carbon cannot be used in the reduction o...

Carbon cannot be used in the reduction of `Al_(2)O_(3)` because :

it is an expensive

the enthalpy of formation of `CO_(2)` is more than that of `AI_(2)O_(3)`

pure carbon is not easily available

the enthalpy of formation of `AI_(2)O_(3)` is too high

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The correct Answer is:

`DeltaH_(f)` for `AI_(2)O_(3)` is very high `:'` stasicity `uarr uarr`

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