Consider the following elements: 1. Neodymium 2. Boron 3. Nickel 4. Iron How many of the above elements are the chief constituent part of the Neodymium magnets? |ForumIAS

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[A] Only one

[B] Only two

[C] Only three

[D] All four

Answer: C

Notes:

Explanation:

Neodymium magnets (Nd-Fe-B) are primarily composed of three elements – Neodymium, boron, iron..

Source: ET