Answer:
Zinc is more reactive
than copper. Hence, when a zinc plate is kept in a solution of copper sulphate,
it slowly displaces copper from the solution and blue colour of the solution
keeps fading away. Because of zinc going into solution as zinc sulphate a
number of holes are seen in the zinc plate. The reaction is
CuSO4(aq)
+ Zn(s) ZnSO4(aq) + Cu(s)
Blue Colourless
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