Which of the following process is used in the extractive metallurgy of magnesium ?

Options

A. Fused salt electrolysis
B. Self reduction
C. Aqueous solution electrolysis
D. Thermite process

Answer

1

Explanation

From salts of magnesium, magnesium can not be extracted by other chemical methods as magnesium itself acts as a reducing agent and Mg obtained at cathode during electrolyte of its salt solution, reacts with water forming `Mg(OH)_(2)` .
`MgCl_(2)hArr Mg^(2+)+2Cl^(-),"At cathode"Mg^(2+)+2e^(-)rarrMg,"At anode"2Cl^(-)rarrCl_(2)+2e^(-)`