The most suitable metal for permanent magnets is _________.

steel

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iron

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copper

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aluminium

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Solution

The correct option is A steel
Retentivity is the ability of a magnetic material to retain the acquired magnetism. The most desirable characteristic of permanent magnets is high retentivity.
Steel has the highest retentivity among the given options. hence it is more suitable in making a permanent magnet than the given rest.

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