Which one of the following magnet is not an artificial magnet?
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Bar magnet
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Lodestone
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Ball ended magnet
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Horse shoe magnet
B
Correct answer
Explanation
Lodestone is a naturally magnetized form of the mineral magnetite. It was the first magnetic material discovered and used in compasses. All other options - bar magnets, ball-ended magnets, and horseshoe magnets - are artificially manufactured magnets.