(C) Roasting is a metallurgical process in which an ore is heated in a regular supply of air in a furnace at a temperature below the melting point of

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Volatilisation of volatile impurities and decomposition and oxidation of the ore

(C) Roasting is a metallurgical process in which an ore is heated in a regular supply of air in a furnace at a temperature below the melting point of the metal. It involves the volatilisation of volatile impurities,decomposition of the ore (e.g.,carbonates to oxides),and oxidation of the ore (e.g.,sulfides to oxides).

Class 12 Chemistry General Principles and Processes of Isolation of Elements Roasting and Calcination

Medium

Roasting involves

A
Only volatilisation of volatile impurities
B
Only volatilisation of volatile impurities and decomposition of the ore
C
Volatilisation of volatile impurities and decomposition and oxidation of the ore
D
Oxidation and reduction of the ore and slag formation