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Question

In the electrolytic refining process of Zinc, it is given that the crude metal is made anode while the electrolyte is used is H2SO4 (dilute) + ZnSO4 . The cathode should be:



A

Pure Zinc

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B

Zn-Hg Amalgam

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C

Aluminum

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D

All of the above

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Solution

The correct option is D

Aluminum


For the given electrolyte, Pure Zinc cathode gets dissolved in dilute H2SO4 and thus is impractical. Hence Aluminum is used as the cathode.


Chemistry

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