alleryAn ore of iron that is best in terms of iron content and magnetic properties As per your syllabus, is
ABauxite
BCinnabar
CMagnetite (Fe₃O₄)
DZinc blende
Answer & Solution
Correct answer: C. Magnetite (Fe₃O₄)
1. Ores are naturally occurring minerals from which metals can be economically extracted.
2. Bauxite is the ore of aluminium; cinnabar (HgS) is the ore of mercury.
3. Zinc blende (ZnS) is the ore of zinc.
4. Magnetite (Fe₃O₄) is the richest iron ore with excellent magnetic properties.
_Source: syllabus Science, Ch 3 "Metals and Non-metals", §3.4 (also Geo §5)_
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