Which of the following material/materials added to iron gives you Alnico?

Electromagnet

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Contact Screw

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Striker

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Gong

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Solution

The correct option is D
Gong

Alnico is the name for an iron alloy that primarily consists of iron, aluminium (Al), nickel (Ni) and cobalt (Co). That is why it is called al-ni-co. It is used as a permanent magnet.

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