Question

what happens when zinc granules are dropped in copper sulphate solution

Answer 1

Adding zinc to copper sulfate will result in a displacement reaction that will create copper metal to precipitate as a solid. 

CuSO4(aq) + Zn(s) ---> ZnSO4 + Cu(s)

This reaction is quite exothermic too, meaning it will give off alot of heat - enough to make it too hot to hold the reaction beaker in bare hands.

hope it helps you!

Answer 2

Zn + CuSo4 ----> ZnSo4 + Cu
Zn displaces copper from copper sulphate solution..
this is an example of Displacement reaction