Iron galvanized with zinc is cathodically protected from corrosion. This is because?
-
zinc has a more positive oxidation potential than iron
- zinc has less positive oxidation potential than iron
- bith have the same oxidation potential
- zinc is harder than iron
The correct answer is: A
Explanation
Iron galvanized with zinc is cathodically protected from corrosion because Zinc has a more positive oxidation potential than iron. This means that Zinc will preferentially corrode, acting as a sacrificial anode.