The reaction between copper sulphate and zinc gives:

The blue colour of copper sulphate disappears and a powdery red mass of copper is deposited at the bottom of the beaker. The reaction can be represented as follows:

Copper Sulphate (CuSO4) + Zinc (Zn) ® Zinc Sulphate (ZnSO4) + Copper (Cu)

(Blue)                                                             (Colourless)                     (Red)