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Frothing agents used to separate ZnS fro...

Frothing agents used to separate ZnS from PbS is……

A

NaCN

B

NaCl

C

`NaNO_(3)`

D

`NaNO_(2)`

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The correct Answer is:
A
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FULL MARKS-METALLURGY -Additional questions ( CHOOSE THE BEST ANSWER )
  1. Froth flotation process is suitable for concentrating …………… ores.

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  2. Copper pyrite and zinc blende are purified by……..

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  3. Frothing agents used to separate ZnS from PbS is……

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  4. Depressing agents used to separate ZnS from PbS is ……..

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  5. Leaching is also called as……..

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  6. In the leaching process ,the metal present in the ore is converted int...

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  7. Gold ore is concentrated by…….

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  8. Bauxite is purified by…….

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  9. Which type of leaching process convert insoluble sulphide ores into ...

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  10. A chemist involves mining process and he got two ores together .If on...

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  11. The process in which the concentrated ore is strongly heated in the ab...

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  12. A chemical substance that forms an easily fusible slag with gangue is ...

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  13. Blistered copper is………………

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  14. Ignition mixture used in aluminothermic process is ………….

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  15. For spontaneous reaction ,the change in free energy should be…

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  16. The change in Gibbs free energy for a reaction is expanded by...........

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  17. Relationship between DeltaG^(@) and K(P) is…….

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  18. Consider the following statements. (i)Ellingham drawn on a plot by c...

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  19. Which of the following oxides is unstable at moderate temperature?

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  20. The oxides will decompose on heating even in the absence of reducing ...

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