Which iron ore is the finest, with up to 70 per cent iron, and is especially valuable in the electrical industry because of its magnetic qualities?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Magnetite
Magnetite is the finest iron ore, with up to 70 per cent iron. Its excellent magnetic qualities make it especially valuable in the electrical industry. Hematite has a little less iron (50-60 per cent) but is the ore used most in industry.