A. Zinc SulphateB. Copper sulphateC. Sulphuric AcidD. Copper Oxide
B. Copper sulphate Zinc rods are called sacrificial anodes because they lose electrons readily and go into ionic form of zinc called Zn+2 ions. So when copper is plated out as copper metal from the copper sulphate solution, the copper is replaced by zinc ions until the solution is depleted