A metal has a high concentration into earth crust and whose oxides cannot be reduced by carbon. most

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General Principles and processes of Isolation of Elements

easy

A metal has a high concentration into the earth crust and whose oxides cannot be reduced by carbon. The most suitable method for the extraction of such metal is

Alumino thermite process

Electrolysis process

Van-Arkel's process

Cupellation

Solution

Oxides of strong electropositive metals such as $K , Ca , Na , Al$ and $Mg$ are very stable. It is difficult to reduce them into metallic state by carbon reduction. Such metals are extracted by passing electricity (electrolysis process) through their fused chlorides/oxides/hydroxides.

Hence, the most suitable method for extraction of a metal which has high concentration in the Earth's crust and whose oxides cannot be reduced by carbon is electrolysis process.

Standard 12

Chemistry