What is the colour of the solution formed when copper sulphate reacts with zinc?
When copper sulphate reacts with zinc then zinc displaces to copper and zinc sulphate is formed because zinc is more reactive than copper. So the blue colour of copper sulphate disappears and a powdery red mass of copper is deposited at the bottom of the beaker. Hence the colour of the solution formed is red.
CuSO4 (Blue) + Zn→ ZnSO4 (colourless) + Cu (Red)