Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) Thermodynamic Principles of Metallurgy and Applications Single Correct MCQ
Published on: August 13, 2026

Which of the following statement is incorrect about the extractive metallurgy of copper ?

A
Matte chiefly consists of iron sulphide and some ferrous oxide.
B
The impurity of iron sulphide is removed as fusible slag, FeSiO 3 during roasting.
C
The copper pyrite is concentrated by froth floatation process.
D
Copper is obtained by self reduction in bessemer converter.

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The correct answer is:
A

In actual process the ore is heated in a reverberatory furnace after mixing with silica. In the furnace, iron oxide ‘slags of’ as iron silicate and copper is produced in the form of copper matte which contains mostly Cu 2 S and some FeS.

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