Question

Which out of these are types of iron ore?
This question has multiple correct options.
A.Bauxite
B.Magnetite
C.Fluorite
D.Hematite

Answer 1

Hint: Iron ores are rocks and minerals from which metallic iron can be extracted economically.
These ores vary in colour from dark grey, bright yellow to rusty red. The iron is usually found in the form of magnetite, hematite, goethite, limonite or siderite.

Complete answer:
Bauxite is a rock formed from a reddish clay material called laterite soil. It is found in tropical or subtropical regions. Bauxite mainly comprises aluminum oxide compounds (alumina), silica, iron oxides and titanium dioxide. This option is not correct.

Magnetite is a rock mineral and one of the major iron ores, with the chemical formula Fe₃O₄. It is one of the oxides of iron. It is ferromagnetic and is attracted to a magnet. It is very magnetic as compared to other naturally-occurring minerals on Earth and can become a permanent magnet itself. This option is correct.

Fluorite is the mineral form of calcium fluoride and belongs to the halide minerals. This option is correct.

Hematite is one of the most abundant minerals on Earth's surface and an important ore of iron. It is a popular rock-forming mineral found in sedimentary, metamorphic, and igneous rocks at different locations throughout the world. This option is correct.

Hence, the correct answer is option B & D.

Note:India ranks 4th in the production of iron ore. Orissa is the largest iron ore producing state in India.
 It contributes to about half of the total iron production of the country.
In 2011 the Financial Times, iron ore was considered to be "more vital to the global economy than any other commodity".