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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 a basic flux

Text Solution

Verified by Experts

The correct Answer is:
A
`FeO + SiO_(2) rarr FeSiO_(3)`.
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
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