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

SiO₂, which is an acidic flux.

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limestone which is basic flux.

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SiO_2,which is basic flux.

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CaO, which is basic flux.

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Solution

The correct option is A
SiO₂, which is an acidic flux.

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Similar questions

Q. When copper pyrites is roasted in excess of air, a mixture of

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Q. FeO is the impurity in the extraction of Cu from copper pyrite. Which of the following flux is used for the removal of impurity ?

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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

The correct option is A SiO2, which is an acidic flux.

The correct option is A
SiO₂, which is an acidic flux.