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NaCN used in the froth floatation method...

`NaCN` used in the froth floatation method for the purification of ore is

A

`ZnS` which contain `PbS`

B

`Cu_(2)S `which contain `Fe_(2)S_(3)`

C

`PbS` which contain `ZnS`

D

`PbS` which contain `SiO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`ZnS` can form soluble complex with `NaCN`
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ALLEN-METALLURGY-EXERCISE-02
  1. Which of the following ores is a double salt composition

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  2. The following metal-ore combination is correct

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  3. NaCN used in the froth floatation method for the purification of ore i...

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  4. Which of the following metal can not be extracted by smelting process

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  5. The reduction of Cr(2)O(3), by heating it with aluminium is known as

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  6. Which metal is leached from its ore by the use of KCN

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  7. Name the flux to remove the impurity of SiO(2)

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  8. Mercury containers are made of

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  9. Autoreduction process is used in the extraction of

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  10. When Alumina is electrolysed in presence of cryolite, the gas liberate...

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  11. In the extraction of copper, metal is formed in the Bessemer converter...

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  12. x,y and z in the following processes are respectively (i) P(2)O(5) +...

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  13. Which of the following process involves smelting

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  14. Out of the following which ores are calcinated during extraction (a)...

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  15. Which of the following match are incorrect

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  16. Valachite on calcination gives rarr 'A' + CO(2) +H(2)O. Compound 'A' o...

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  17. Which of the following ores are calcinared during extraction

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  18. Which method of purification is represented by the following equations...

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  19. Which are correctly is matched

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  20. Which of the following reaction is a part of Serpeck's process

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