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During the process of electroytic refini...

During the process of electroytic 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-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
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  4. On heating a mixture of Cu(2)O and Cu(2)S, we get :

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  7. The method of zone relining of metal is based on the principle of AIFM...

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  8. Which of the following function is of no significance for roasting su...

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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. The metal extracted by leaching with cyanide is

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

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

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  18. Extraction of Ag from commercial lead is possible by

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