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Gold ore is concentrated by……....

Gold ore is concentrated by…….

A

Cyanide leaching

B

Alkali leaching

C

Acid leaching

D

Hand picking

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The correct Answer is:
A
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FULL MARKS-METALLURGY -Additional questions ( CHOOSE THE BEST ANSWER )
  1. Leaching is also called as……..

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

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  3. Gold ore is concentrated by…….

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  4. Bauxite is purified by…….

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

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

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

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

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  9. Blistered copper is………………

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

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

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

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

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

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

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

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  17. consider the following statements (i)Ellingham diagram gives informa...

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  18. Gibbs free energy change for the electrolysis process is expressed by ...

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  19. The technique used to refining zinc and mercury is ……

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  20. Which of the following is not purified by zone refining process?

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