Question

What is anode mud?

(a) Impurity found below anode after plating

(b) Impurity which can separated from the mixture using filtration

(c) Impurity which cannot be separated

(d) Distilled impurity

This question was addressed to me in an online interview.

Question is from Electroplating Baths topic in section Electroplating of Engineering Chemistry II

Answer 1

Right answer is (a) Impurity found below anode after plating

To explain: During electroplating of noble materials, some electrons may shift toward the pure materials resulting in the deposition of its ore components. Usually, anode muds are basically noble metals like zinc, silver etc.