Zinc is used to protect iron from corrosion because

• GC Acids Bases Salts
• GC Metals Non-Metals

Zinc is used to protect iron from corrosion because zinc is

1. more electropositive than iron
2. cheaper than iron
3. a bluish white metal
4. a good conductor of heat and electricity

Answer

Galvanising is a method of rust prevention. The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water reaching the metal underneath.

Zinc is more electropositive than iron, hence it is more reactive than iron, so it oxidizes in preference to the iron object.

The correct option is A.