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प्रश्न
What do you observe when Iron nail is kept in copper sulphate solution for sometime.
उत्तर
When an iron nail is kept in copper sulphate solution, a reddish brown coating is seen on the iron nail after sometime. Also, the colour of the copper sulphate solution changes from blue to green. This is observed because iron displaces copper from copper sulphate solution as iron is more reactive than copper.
Fe (s) + CuSO4 (aq) → FeSO4 (aq) + Cu (s)
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