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Extraction of silver form 'Ag2 ~S' by th...

Extraction of silver form 'Ag_2 ~S' by the use of soidum cyanide is an example of

A

roasting

B

hydrometallurgy

C

electrometallurgy

D

smelting

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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. Smelting involves reduction of metal oxide with

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  2. Heating pyrites to remove sulphur is called

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  3. Extraction of silver form 'Ag2 ~S' by the use of soidum cyanide is an ...

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  4. In the aluminothermite process alluminium acts as

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  5. In the extraction of copper from its sulphide ore, the metal is formed...

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  6. Silver is obtained from Na [ '.Ag(CN)2]' by reaction with

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  7. Van Arkel method of purification of metals involves converting the met...

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  8. Heating an ore in the absence of air. below its melting point is calle...

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  9. In the froth floatation process for benefication of the ores, the ore ...

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  10. Galena is an ore of

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  11. For which ore of the metal, froth floatation method is used for concen...

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  12. The froth floatation process is based upon

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  13. Which one of the following ores is best concentrated by froth floatati...

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  14. Cassiterite is an ore of

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  15. Cassiterite is concentrated by

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  16. Which of the following metals is extracted by. the electrometallurgica...

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  17. The methods chiefly. used for the extraction of lead and tin from thei...

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  18. In the extraction of Fe from 'Fe2 O3' the reducing agent is

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  19. During the extraction of iron, slag produced is

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  20. The magnetite ore is

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