INDIAN GEOGRAPHY

Detailed explanation-1: -Magnetite is the finest iron ore with a very high content of iron up to 70 per cent. It has excellent magnetic qualities, especially valuable in the electrical industry.

Detailed explanation-2: -Magnetite contains 72.4% Fe by molecular weight, which is higher than hematite, but magnetite ores having lower ore grade (generally 20-30% Fe) owing to the presence of impurities. This results in higher costs for the production of concentrate for steel smelters.

Detailed explanation-3: -Answer: Option A Solution: Magnetite is the best quality of iron ore and contains 72% pure iron.

Detailed explanation-4: -One of the major advantages hematite ore has over other types like magnetite is its high iron content. That makes the iron extraction process much less costly and time consuming. In addition, hematite ore only goes through one stage of screening and crushing, while magnetite has an additional round of processing.

Detailed explanation-5: -Magnetite is the finest ore among all the ores of Iron. Magnetite ore comprises of seventy per cent of iron. The magnetic properties in this ore are appreciable. Fe3O4 is the chemical formula of magnetite ore. Magnetite (Fe3O4) is reduced to Ferrous Oxide (FeO) and then later Iron is extracted from its oxide.