iron nail are placed in copper sulphate solution
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When Iron nail (Ferrum) is dipped in Copper sulphate (CuSO4) there takes reaction between them andcoppersulphate change its color from blue to light green. This shows Iron is more reactive thanCopper, it can replace Copperfrom CuSO4. CuSO4 is in blue Color and FeSO4 is in light green color.
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