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Extraction of copper from copper pyrite ...

Extraction of copper from copper pyrite `(CuFeS_(2))` involves

A

Crushing followed by concentration of the ore by forth flotation

B

Removal of iron an slag

C

Self-reduction step to produce 'blister copper' following evolution of `SO_(2)`

D

Refining of 'blister copper' by carbon reduction

Text Solution

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The correct Answer is:
A, B, C
Refining of blister copper is done by poling technique.
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  5. Fe^(3+) is reduced to Fe^(2+) of NaOH

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  6. Extraction of copper from copper pyrite (CuFeS(2)) involves

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  7. To an acidified dichromate solution, a pinch of Na(2)O(2) is added and...

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  8. Pick out the correct statement(s):

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  9. The species that undergoes disproportionational is an alkaline medium ...

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  10. (NH(4))(2)Cr(2)O(7) on heating gives

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  11. Iron reacts with steam to form

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  12. CuSO(4) reacts with KCN to form

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  13. The slag obtained in extraction of copper pyrites is mainly

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  14. After partial roasting, the sulphide of copper can be reduced by

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  15. Identify the statement which is correct for copper sulphate

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  17. In solid CuSO(4).5H(2)O

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