Question

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because

Answer 1

zinc is less reactive than iron so its layer could be coated.if it is reversed than it will not possible because zinc reacts as a resistant and iron will not give it any specifications .so the reverse couldn't be possible.

Answer 2

because zinc is more reactive compared to iron and so it can replace iron but iron cannot