Roasting is a process in which the ore (mostly sulphide) is heated strongly in the presence
Channel: Doubtnut
Date: 2020-07-26

Roasting is a process in which the ore (mostly sulphide) is heated strongly in the presence of excess of air. The heating should be done at a temperature below the melting point of the ore.  Sometimes roasting may not bring about complete oxidation :  `2CuFeS_(2) + 4O_(2) rarr A + 2FeO + 3SO_(2)`  Find the `A` :