Which one of the following is not not an ore of iron?
- Magnesite
- Haematite
- Magnetic
- Siderite
- Iron pyrites
The Correct Option is A
Approach Solution - 1
Magnesite is a mineral composed of magnesium carbonate (MgCO₃) and is not an ore of iron. The ores of iron include Haematite (Fe₂O₃), Magnetite (Fe₃O₄), Siderite (FeCO₃), and Iron pyrites (FeS₂). Haematite and Magnetite are the most common and significant ores of iron.
The correct option is (A) : Magnesite
Approach Solution -2
Magnesite
Explanation:
Ores of iron are naturally occurring minerals from which iron can be extracted. The given options include the following:
- Haematite (Fe2O3) - A major ore of iron.
- Magnetic (Fe3O4) - A magnetic ore of iron.
- Siderite (FeCO3) - Another ore of iron.
- Iron pyrites (FeS2) - Also known as fool's gold, it contains iron and is considered an iron ore.
- Magnesite (MgCO3) - This is not an ore of iron. It is an ore of magnesium.
Therefore, Magnesite is the correct answer as it is not an ore of iron.
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