Question

In impure metal corrosion takes place at(a) Cathode(b) Anode(c) Both(d) None​

Answer 1

Answer:

Technically, the corrosion takes place at both the cathode and anode, though the ways are different ie oxidation happens to the anode and reduction affects the cathode. In case of an impure metal in the process of galvanic corrosion, because of the electron flow from anode to cathode, the anode corrodes and becomes thinner.

Explanation:

When corrosion takes place, the metal deteriorates due to the chemical reaction. The corrosion happens in two steps, oxidation and reduction. The higher energy levels of the anode are eluted and reduction takes place at the low energy level of the cathode. This way oxidation reactions occur at the anode and reduction happens to the cathode.