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 function of limestone in the extraction of iron…The process of extraction of iron from its ore is?The raw materials used for the smelting of iron ore…In the extraction of iron, the waste gas from the…''.....If it be so; our God whom we serve is able to…