Question

Hey Guys please help me on this question which is in image form.​

Answer 1

Answer:

When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

Answer 2

Answer:

When an iron nail dipped in the solution of copper sulphate the iron displaces copper from the solution of copper sulphate because iron is more reactive then copper. So copper sulphate solution changes from the blue to green

Hope these helps you......