The maximum temperature $1550$ $^oC$ is obtained in the ......... region of the blast furnace used in the extraction of iron.

What should be the considerations during the extraction of metals by electrochemical method?

Extraction of gold $(Au)$ involves the formation of complex ions $X$ and $Y$ as shown in the reaction: $\text{Gold ore}$ $\xrightarrow{CN^-, H_2O, O_2} HO^- + X$ $\xrightarrow{Zn} Y + Au$. $X$ and $Y$ respectively are:

$A$ flux is used to remove . . . . . . .

Aluminum is obtained from alumina $(Al_2O_3)$ by the electrolysis of a molten mixture of:

Statement $(A)$ $Mg$ can reduce $Al_2O_3$ above $1350^{\circ} C$.
Statement $(B)$ $Al$ can reduce $MgO$ below $1350^{\circ} C$.
The correct answer is