1.

Cu_(2)S+2C_(2)O to 6Cu+SO_(2) In which process of metallurgy of copper, above equation is involved ?

Answer»

Roasting
SELF reduction
Refining
Purification

Solution :This process is also caiied autoreduction process or air reduction process. The sulphide ores of less ELECTROPOSITIVE metals are heated in air to convert part of the ore into OXIDE or SULPHATE which then react with the remaining sulphide ore to give the metal and SULPHUR dioxide.
`2Cu_(2)S+3O_(2)to 2Cu_(2)O+2SO_(2)`
`Cu_(2)S+2Cu_(2)O to 6Cu+SO_(2)`


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