Q. Which of the following is an iron ore ?
a) Cinnabar
b) Bauxite
c) Limonite
d) Pyrite
Question from BPSC PT 70, 2024
The correct answer is: c) Limonite
Explanation:
Iron ores are minerals from which iron can be extracted. Among the given options:
a) Cinnabar: This is not an iron ore. It is a mineral of mercury (HgS) and is used as a source of mercury.
b) Bauxite: This is not an iron ore. It is the primary ore of aluminum and contains aluminum oxide.
c) Limonite: This is an iron ore. It is a mixture of hydrated iron(III) oxide-hydroxides and is one of the sources of iron.
d) Pyrite: Although pyrite (FeS2) contains iron, it is not considered an iron ore because it is primarily used for sulfur extraction and not for obtaining iron.
