Copper matte consists mainly of

A $CuSO X_{4}$ and $FeSO X_{4}$
B $Cu$ and $Fe$
C $CuO$ and $FeO$
D $Cu X_{2} S$ and $FeS$

Answer: D

In smelting of roasted copper pyrites, iron oxide is removed as slag with silica. The molten mixture of sulphides that remains is called matte. It is chiefly

Cu X_{2} S

with

FeS

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