Question

Identify $x,yandz$ for the following metallurgical process :

$Metalsulphide\stackrel{x}{\to }Metaloxide\stackrel{y}{\to }Impuremetal$

$x,y$ and $z$ are respectively :

• A. roasting, smelting, electrolysis
• B. roasting, calcination, smelting
• C. calcination, auto-reduction, basemerisation
• D. None of the above

Answer 1

The correct option is A roasting, smelting, electrolysis

Roasting $\to$ It is a process in metallurgy

in which sulphide are is heated in

air and transforms into oxides.

Smelting $\to$ It is a process of extracting

a base metal from corresponding

metal oxides.

electrolysis $\to$ It is used in metallurgical

process, such as in extraction or purification

of metals from ores or compounds.

Therefore, the correct option is A.