Question

The metals are obtained from their oxides form by:

• A. roasting
• B. calcination
• C. both roasting and calcination
• D. none of these

Answer 1

The correct option is C

both roasting and calcination

The metals are obtained from their oxides form by both calcination and roasting. Calcination is defined as heating of sulphide in absence of air whereas roasting is defined as heating of sulphide in presence of air.