alleryAlnico magnets are made mainly from which metals with iron?
ALead, tin and bismuth
BSilver, gold and copper
CSodium, calcium and zinc
DAluminium, nickel and cobalt
Answer & Solution
Correct answer: D. Aluminium, nickel and cobalt
1. The name alnico hints at its ingredients.
2. It combines aluminium, nickel and cobalt with iron.
3. The other metal sets are not ferromagnetic alloys.
_Source: Wikipedia, Magnet, Composites_
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