MCQ practice · SSC Chemistry Board questions · Chapter 10: Mineral Resources: Metals and Non-metals
Which is an ore of iron?
Think it through first, then pick an option.
- a Hematite
- b Cinnabar
- c Calamine
- d Chalcocite
Answer and explanation
Correct answer: a Hematite
Hematite (Fe₂O₃) is an important ore of iron.
Why the other options are wrong
- b Cinnabar: Cinnabar (HgS) is a mercury ore; the iron ore is hematite.
- c Calamine: Calamine (ZnCO₃) is a zinc ore; the iron ore is hematite.
- d Chalcocite: Chalcocite (Cu₂S) is a copper ore; the iron ore is hematite.
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