First slide

Corrosion

Question

Statement I : Surface of a metal acts like an electrochemical cell
Statement II : Oxygen concentration on the surface a metal is not uniform

Easy

A

Statement I and II are correct
B

Statement I is correct and Statement II is incorrect
C

Statement - I is incorrect and Statement - II is correct
D

Both statement - I and II are incorrect

Solution

On the surface of a metal concentration of oxygen is different.
Region where the [O₂] is low acts as anode.
Region where the [O₂] is high acts as cathode.
On surface both oxidation and reductioin occur simultaneously.
Surface of a metal acts like an electrochemical cell.

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