alleryStart learning →Which rare earth based material is named as a popular choice for strong permanent magnets?
AAluminium alloy
BManganese oxide
CTungsten carbide
DNeodymium alloy
Answer & Solution
Correct answer: D. Neodymium alloy
1. Alloys of the rare earth elements are used as strong permanent magnets.
2. Neodymium is named as a popular one among them.
3. Aluminium alloy, manganese oxide and tungsten carbide are not rare earth permanent magnet materials.
_Source: OpenStax College Physics (CC BY 4.0), Ch 22 "Magnetism", section 22.2 Ferromagnets and Electromagnets_
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