Question

When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.

विकल्प

• 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)

Answer 1

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 \[\ce{FeS}\].

\[\ce{FeO + SiO2 -> FeSiO3 (slag)}\]