Question

___________ will occur, if current pass from an electrode to electrolyte.

(a) Oxidation

(b) Reduction

(c) Oxidation and reduction

(d) Anion formation

I have been asked this question in a job interview.

This key question is from Corrosion Rate Expression topic in chapter Corrosion Principles of Corrosion Engineering

Answer 1

Correct choice is (a) Oxidation

Easy explanation: The direction of current flow is exactly opposite to the movement of electrons. We know electrons starts at the anode and travels towards cathode whereas current will flow from anode to electrolyte. This results in oxidation or corrosion on that electrode.