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During the process of electrolytic refin...

During the process of electrolytic refining of copper some metals present as impurity settle as 'anode mud'. These are

A

`Sn` and `Ag`

B

`Pb` and `Zn`

C

`Ag` and `Au`

D

`Fe` and `Ni`

Text Solution

Verified by Experts

The correct Answer is:
C
More electropositive metals associated with `Cu` pass in solution, whereas less electropositive metals `(Au,Ag)` collect below the anode as anode mud.
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CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
  1. Which of the following statements, about the advantage of roasting of ...

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  2. When the sample of copper with zinc impurityn is to be purified by ele...

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  3. During the process of electrolytic refining of copper some metals pres...

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  4. Heating mixture of Cu(2)O and Cu(2)S will give

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  5. Sulphide ore of metal are usually concentrated by froth flotation proc...

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  6. Heating of ore in presence of air to remove sulphur impurities is call...

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  7. The method of zone refining of metals is based on the principle of

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  8. Which of the following factors is of no significance for roasting sul...

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  9. Complex formation for cyanide method is used for the extraction of

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  10. The least stable oxide at room temperature is

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  11. High purity copper metal is obtained by

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  12. Corumdum is

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  13. Whch ore can be best concentrated by froth flotation process ?

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  14. Which of the following metal is extracted by the use of cyanide soluti...

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  15. When MnO2 is fused with KOH and O2, what is the product formed and its...

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  16. Pb and Sn are extracted from their chief ore respectively by

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  17. The substance not likely to contain CaCO(3) is : (2003)

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  18. Extraction of Ag from commercial lead is possible by

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  19. The chemical composition of slag formed during the smelting process in...

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  20. The metal that cannot obtained by electrolysis of an aqueous solution ...

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