Find the odd one out : Magnetite, Magnes, Magnesia, Bar magnet
A
Magnetite
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B
Magnes
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C
Magnesia
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D
Bar magnet
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Solution
The correct option is D Bar magnet Magnetite, Magnes, Magnesia, are ore of Iron.
Whereas Bar magnet is a magnetic substance called a magnet.
Magnetite is a rock mineral and one of the main iron ores, with the chemical formula Fe3O4. It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. It is the most magnetic of all the naturally occurring minerals on Earth.