Question

How will you prove that zinc is more reactive than iron

Answer 1

If we observe this reaction

FeSO4 + Zn ---------> ZnSO4 + Fe

This is an example of displacement where a more reactive metal displaces a less reactive metal from its salt solution.
So we can see that Zn displaces Fe from FeSO4.

Hence this proves that Zn is more reactive than Fe

Answer 2

The metals copper, silver gold and platinum are less reactive thanhydrogen and they do not replace hydrogen from water or acid. ... Zinccan displace copper from copper sulphate solution and iron from ferrous sulphate solution. So zinc ismore reactive than iron and copper.