Question

What is meant by anodic protection?

(a) Accompanying the sacrificial metal with metallic structure

(b) Prevention of corrosion by impressed cathodic current by supply electrons

(c) Prevention of corrosion by the impressed anodic current is used to transform from active to a passive state

(d) Additions of oxidizers and oxidizing agents for the formation of an oxide layer

The question was posed to me by my college professor while I was bunking the class.

My doubt stems from Modern Theory Applications in chapter Modern Theory Applications of Corrosion Engineering

Answer 1

Right answer is (c) Prevention of corrosion by the impressed anodic current is used to transform from active to a passive state

For explanation I would say: Anodic protection is one of the corrosion prevention or protection method in which the impressed anodic current is used to transform from active to a passive state.