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Answer» Hey there!
When Copper sulphate and iron nail are put together then the reactions occurs is:
FE(s) + CuSO₄ (aq) → FeSO₄(aq) + Cu (s)
As we KNOW the colour copper sulphate solution is blue in colour. When we put iron nail in it , copper forms brown coloured COATING on iron nail. The solution's colour also changes to LIGHT green colour.
Hence, it is a DISPLACEMENT reaction as iron is more reactive than copper and copper is displaced to form ferrous sulphate solution.
Hope It Helps YoU!
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