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There are following extraction process o...

There are following extraction process of silver but not:

A

as a side product in electrolytic refining of copper

B

Parke's process in which Zn is used to extract silver by solvent extraction from molten lead

C

by reaction of silver sulphide with `KCN` and then reaction of soluble complex with Zn

D

by heating `Na[Ag(CN)_(2)]`

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The correct Answer is:
D
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ALLEN-METALLURGY-EXERCISE-01
  1. Which of the following metals are extracted by using Al as reducing ag...

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  2. The correct ste of carbonate ores is (a) Magnesite (b) Siderite (c) ...

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  3. Calcination is the process of heating the ore

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  4. Copper matte consists of:-

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  5. Which of the following statements is correct for roasting

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  6. Among the following statements, the incorrect one is

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  7. Fe can displace which of the following ions from their aqueous solutio...

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  8. There are following extraction process of silver but not:

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  9. Which of the following is not an ore:

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  10. In the Pidgeon process, Mg is produced by:

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  11. "Foo's gold" is

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  12. Which one of the following reactions is an example for calcination pro...

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  13. Identify the process to which the following reaction belongs AI(2) O...

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  14. (Ag +Pb) alloy overset("Melt and add zinc")rarr (Ag +Pb +Zn) "melt" ov...

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  15. Formation of metallic copper from sulphide ore in te normal thermometa...

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  16. Bessemerisation is carried out for (i) Fe (ii) Cu (iii) AI (iv) sil...

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  17. Consider the following statements: Roasting is carried out to: (i)...

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  18. For extraction of sodium from NaCI, the electrolytic mixture NaCI + Na...

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  19. Among the following statements, the incorrect one is

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  20. Pb and Sn are extracted from their chief ore by :

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