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Cyanide process is used for the extracti...

Cyanide process is used for the extraction of :

A

Au

B

Cu

C

Ag

D

Both (1) and (3)

Text Solution

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Cyanide process is used in the extraction of both silver and gold because these form complex salts with `CN^(-)` ion due to presence of lone pair of electron on nitrogen atom.
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NARAYNA-METALLURGY-STATEMENT TYPE QUESTOINS
  1. Cyanide process is used for the extraction of :

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  2. Assertion: All minerals are ore. Reason: Ores are minerals from whic...

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  3. Metals of high purity are obtained by zone refining. Impurities are ...

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  4. (A) Au,Pt,Ag etc are found in free state (R ) The metals which are n...

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  5. (A) Roasting is a process in which the ore is heate in presence of air...

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  6. During the electrolysis of aqueous sodium chloride the cathodic reacti...

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  7. The ore that is concentrated by froth floatation process is

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  8. Assertion: Ag and Au are extracted by leaching the ores with a dilute ...

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  9. (A) Alumina has hgih condutivity (R ) The mixture of alumia and cryo...

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  10. What is the percentage of carbon in pig iron and cast iron ?

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  11. Steel contains more carbon than wrought iron

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  12. Aluminium metal is generally used for the extraction of chromium and m...

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  13. Statement-1:Electrolytic reduction of alumina to aluminium by Hall-Her...

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  14. In Froth floatation process for, pine oil functions oil functions as:

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  15. Silver is refined by cupellation process, the process removes the impu...

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  16. Statement-1:Magnesia and quick lime are used as basic flux. Statemen...

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  17. The ore that is concentrated by froth floatation process is

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  18. Assertion : Nickel can be purified by Mond process. Reason : Ni(CO)(...

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  19. Zinc is used to protect corrosion of iron because

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  20. Cinnabar (HgS) and galena (PbS) on roasting give their respective meta...

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  21. Statement-1: Silicones are used as high class industrial insulators. ...

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