Question

iron is galvanized with zinc but not copper​

Answer 1

Answer:

Explanation:

This is because zinc is more reactive than iron, whereas copper is not.

Because zinc has higher affinity towards oxygen, it prevents iron from rusting.

If copper is used, as iron is more reactive, it will still react with oxygen and is not protected.

Therefore, zinc is used to galvanize iron.

Answer 2

Answer:

Iron is galvanized with zinc and not with copper as copper is less reactive and zinc is more reactive than iron.

In case even if zinc coating gets broken iron would not rust as zinc is more reactive and would react with the oxygen of air but if it is coated with copper and copper coating gets broken then the iron beneath will start rusting.