JEE Main levelSingle correct optionDifficulty 2 of 3mt082
In the puddling furnace used to make wrought iron from cast iron, the haematite lining serves as
Aa reducing agent for the iron
Ba flux for removing silica as CaSiOX3
Ca catalyst that lowers the melting point
Dan oxidising agent that oxidises carbon, sulphur and phosphorus impurities
Answer: D
Haematite supplies oxygen: FeX2OX3 oxidises the carbon, sulphur and phosphorus of cast iron into gaseous or slag-forming oxides. This leaves almost pure iron, wrought iron.