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During electrolytic refining of copper, ...

During electrolytic refining of copper, some metals present as inpurity settle as 'anode mud'. These are -

A

Sn and Ag

B

Pb and Zn

C

Ag and A u

D

Fe and Ni

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The correct Answer is:
C
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In electrolytic refining method_____ metal act as anode.

It is said that electrolytic refining of copper is economic. Why?

Assertion : In electrolytic refining of metal, impure metal is made cathode while a strip of pure metal is used as anode. Reason : The pure metal gets deposited at anode as anode mud.

In electrolytic refining of metals, the impure metal is made, the anode and a strip of pure metal,the cathode during the,electrolysis of an aqueons solution of a complex metal salt. This method cannot be used for refining of : silver, copper, aluminium, zinc

Assertion: Elements present in anode mud of an electrolytic refining process has higher oxidation potential as compared to that of metal to be refined. Reason: Impurities having higher oxidation potential as compared to metal to be refined get reduced during electro refining.

Electrolytic refining is used to purify which of the following metals?

Purification of copper is depicted here: Identify the anode, cathode and electrolyte.

Assertion: Through out electrorefining process, the concentration of electrolyte remains constant. Reason: At a particular instant as much the metal atom from anode gets dissolved into electrolyte, the same number of metal ions get deposited at the cathode.

Name the common elements present in the anode mud in electrolytic refining of copper.Why are they so present?

V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
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