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Sulphide ores, of metáls are usually con...

Sulphide ores, of metáls are usually concentrated by froth floatation process. Which óne of the following sulphíde ores offers an "exception and is concèntrated by chemical leaching.

A

sphalerite

B

agrentite

C

galena

D

copper pyrites

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The correct Answer is:
B
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V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
  1. Out of the following metals, the metal which cannot be obtained by ele...

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  2. Froth floatation process for the concentration: of ores'is an illistra...

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  3. Sulphide ores, of metáls are usually concentrated by froth floatation ...

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  4. Which of the following oxides carnot be reduced to metal by carbon?

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  5. The Oil used in the floatation method for the purification-of ores is

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  6. Froth floatation process may be used to increase the concentration of ...

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  7. Malachite is a mineral of

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  8. Electrolytic réduction method is used in the extraction of

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  9. Extraction of zinc from zinc blende is achieved by

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  10. Which metal has a greater tendency to form metal oxide

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  11. Silver containing lead as an impurity is purified by

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  12. During electrolytic refining of copper, some metals present as inpurit...

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  13. Blister copper is

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  14. In blast furnace, iron oxide is reduced by

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  15. One of the following metals forms a volatite compoụd and this property...

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  16. In electrolytic refining of metals, the impure metal is made, the anod...

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  17. Electrometallurgy is used for the reduction of Cu Fe Na Ag

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  18. Which of the following statements, about the advantage of roasting of ...

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  19. Delta G^circ' Vs. T plot in the Ellingham's diagram slopes downward fo...

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  20. When compared to the 'Delta G^circ' for the formation of 'Al2 O3', the...

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