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When copper pyrites is roasted in excess...

When copper pyrites is roasted in excess of air, a mixture of `CuO + FeO` is formed. `FeO` is present as impurity. This can be removed as slag during reduction of `CuO`. The flux added to form slag is

A

` SiO_2`, which is an acidic flux

B

limestone which is a basic flux

C

`SiO_2 `, which is the basic flux

D

CaO, which is basic flux.

Text Solution

Verified by Experts

The correct Answer is:
A
` SiO_ 2 ` is used as an acidic flux.
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PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -COMPETITION FOCUS (JEE(Main and Advanced)/MEDICAL ENTRANCE SPECIAL) MULTIPLE CHOICE QUESTIONS (I)
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  3. When copper pyrites is roasted in excess of air, a mixture of CuO + Fe...

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  5. The composition of 'copper matte' is

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