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Question
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.
Options
sulphides of copper (II) and iron (II)
sulphides of copper (II) and iron (III)
sulphides of copper (I) and iron (II)
sulphides of copper (I) and iron (III)
Solution
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains sulphides of copper (I) and iron (II).
Explanation:
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 mattie this contains \[\ce{Cu2S}\] and \[\ce{FeS}\].
\[\ce{FeO + SiO2 -> FeSiO3 (slag)}\]
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