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Considering Ellingham diagram, which of the following metals can be used to reduce alumina?A. `Fe`B. `Zn`C. `Mg`D. `Cu`

Answer» Correct Answer - C
Metal whose oxide formation has more `- ve Delta G` value can reduce oxides of those metals whose formation has less `-ve Delta G`. Among the given metals only `(Mg rarr Mg O)` curve lies below `(Al rarr Al_(2) O_(3))` curve. Thus, `Mg` metal can be used to reduce. alumina.


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