Question

......... is
a sure test of magnetism
​

Answer 1

Answer:

So by attraction it cannot be surely identified the substance is a magnet or not . So , repulsion is the sure test of magnetism

Explanation:

PLS MARK AS BRAINLIEST

Answer 2

Answer:

Explanation:

Repulsion is the sure test for magnetism because it takes place only between two like poles of a magnet whereas attraction takes place between two unlike poles of a magnet and also between a magnet and a magnetic material.

Magnet is used to separate the useful magnetic substances like steel and iron from waste by the method known as magnetic separation.