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Which of the following is not used for o...

Which of the following is not used for obtaining Ag

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]`

Text Solution

Verified by Experts

The correct Answer is:
D
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MOTION-METALLURGY-EXERCISE 2 (LEVEL - I)
  1. Bessemerization is carried out for (I) Fe (II) Cu (III) Al (I...

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  2. Refining of silver is done by :

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  3. Which of the following is not used for obtaining Ag

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  4. Blister Cu is about

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  5. Which one of the following is not a method of concentrain of ore?

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  6. In which of the following isolation no reducing agent is required

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  7. Chemical leaching is useful in the concentration of:

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  8. The element which could be extracted by electrolytic reduction of its ...

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  9. When roasting is carried out: (P) sulphde ore sare converted into ox...

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  10. The form of iron obtained from blast furnace is:

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  11. Which of the following is not an ore:

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  12. Which one of the following statements is not correct

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  13. In the extraction of nickel of Mond's process, the metal is obtained b...

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  14. B4C (boron carbide) is used except:

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  15. Froth floatation process is based on

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  16. When ZnS and PbS minearls are present together, then NaCN is added to ...

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  17. When copper is purified by electrorefining process, noble metals like ...

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  18. Formation of volatile Ni(CO)(4) and then its subsquent decomposition i...

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  19. Match column–I (process) with column–II (electrolyte) : Column–I (p...

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  20. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

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