Question

5. The metal which is less
reactive than zinc is
1.Iron
2.magnesium
3.Sodium​

Answer 1

copper

So, copper is less reactive than zinc, aluminium and iron. Aluminium can displace Zn from zinc sulphate solution, Cu from copper sulphate solution and Fe from ferrous sulphate solution.

Answer 2

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Iron is the metal which is less reactive than zinc.