Description : The purest form of Iron is : (1) Cast iron (2) Steel (3) Pig iron (4) Wrought iron
Last Answer : (4) Wrought iron Explanation: Wrought iron is an iron alloy with a very low carbon content in Contrast to steel, and has fibrous inclusions, known as slag. This is what gives it a " ... qualifies because current standards for commercially pure iron require a carbon content of less than 0.008 wt%.