Why repulsion is the sure test for magnetism ?

Question: Why repulsion is the sure test  for  magnetism ?
Sol. This is because , Repulsion takes place only between two likes poles of a magnet whereas attraction takes place between two unlike poles of a magnet and also  between a magnet and a magnetic material . So by attraction it cannot be surely identified the substance is a magnet or not . So , repulsion is the sure test of magnetism .

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