JEE Main Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

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

(A)Fe and Ni
(B)Ag and AuCorrect
(C)Pb and Zn
(D)Se and Ag

Answer: (B)

Solution

In electrolytic refining of copper, less reactive (noble) impurity metals such as silver and gold do not dissolve at the anode; they settle below the anode as anode

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Question ID VK-147155