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The synthesized magnetic nano particles from _________ have been found to self-arrange automatically.

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The synthesized magnetic nano particles from _________ have been found to self-arrange automatically.

(a) Zinc

(b) Copper

(c) Iron

(d) Zirconium

I got this question during an interview.

My question comes from Applications of Nano Materials topic in chapter Nano Materials of Applied Chemistry

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The correct choice is (c) Iron

For explanation I would say: The synthesized magnetic nano particles from iron and palladium have been found to self arrange automatically. These materials are extensively used in the manufacture of magnetic devices.

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