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Question

The anode mud in the electrolytic refining of copper doesn't contain:
[1 mark]

A
Pt
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B
Ag
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C
Au
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D
Zn
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Solution

The correct option is D Zn
Anode mud of copper contains Sb, Pt, Ag, Au, Te and Se.
It doesn't contain Zn due to lesser reactivity.

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