Why do non magnet does not exhibit magnetic property?

Answer 1

They do but it in the external magnetic field. In order for material to have magnetic properties without any fields it should be ferromagnetic. In paramagnetic all spins are pointed in the same direction. In diamagnetic spins are oriented randomly it vanishes the effect.

Answer 2

Your question is not perfectly clear. Soft iron for example does not support a permanent magnet condition.

But is may have a magnetic field induced in it by a magnet, and that field is of opposite polarity. This will cause it to be attracted to the magnet. These materials are considered paramagnetic.

And there are Diamagnetic materials in which a magnetic field is induced such as to be the same as the inducing field, and since it is of the same polarity, it will be repelled by the field.

And in your familiar 'rotating disk electric energy meter', eddy currents are induced into the aluminum (a material normally indifferent to a magnetic field) in such a way that it will rotate proportionate to the power being consumed.

Answer 3

Materials that are not magnets do not exhibit magnetic properties because their atoms and molecules are randomly oriented and cancel out each other's magnetic fields. This means there is no net magnetic field produced by the material. In contrast, in magnetic materials, the atoms are aligned in such a way that their magnetic fields add up to create a net magnetic field.