Which of the following is needed to produce slag during the extraction of iron in the blast furnace? by Sunday | Aug 21 | Chemistry WAEC | 0 comments A. Cryolite B. Limestone C. Carbon D. Sulphur Correct Answer: Option B – Limestone Users Also Read These:The main impurity in iron ore during the extraction…The process of seeding during the extraction of…The raw materials used for the smelting of iron ore…The earthly impurities in iron ore are removed in…''.....If it be so; our God whom we serve is able to…