Question

Identify x, y, z for the following metallurgical process.
$\text{Metal sulphide}\stackrel{x}{\to }\text{Metal oxide}\stackrel{y}{\to }Impuremetal\stackrel{z}{\to }\text{Pure metal}$
x, y and z are respectively:

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

Answer 1

The correct option is A roasting, smelting, electrolysis

Roasting $\to$ It is a process in metallurgy in which sulphide ore is heated in air and transform into oxides.

Smelting $\to$ It is a process of extracting a base metal from its corresponding metal oxides.

Electrolysis $\to$ It is used in the metallurgical processes, such as in extraction or purification of metals from ores or compounds.

Therefore correct sequence in this Questions in

$Metalsulphide$ $\underset{}{\overset{\left(Roasting\right)}{\to }}Metaloxide\stackrel{\left(smeltingprocess\right)}{\to }\to Impuremetal\stackrel{\left(electrolysis\right)}{\to }Puremetal$