Electrometallurgical process is used to extract

The value of ${\Delta _r}{G^\Theta }$ for the formation of $Cr_2O_3$ is $-540 \, kJ \, mol^{-1}$ and that of $Al_2O_3$ is $-827 \, kJ \, mol^{-1}$. Is the reduction of $Cr_2O_3$ possible with $Al$?

Carbon cannot reduce $Fe_2O_3$ to $Fe$ at a temperature below $983 \ K$ because

In the extraction of aluminium,the electrolyte used is:

$A$ complex is formed in the extraction of which of the following metals?

In the alumino-thermite process,aluminium is used as: