A student mixes iron filings and sulphur in an evaporating dish. He labels this as 'M'. another evaporating dish, he again takes iron filings and sulphur. This time, he heats the content in the evaporating dish for a while and then allows it to cool. He then crushes this product to a fine powder and transfers it to another dish and labels it as 'N How do the particles in the dish 'M' appear? On bringing a horseshoe magnet over dish 'M', what will happen?
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