GEOLOGY

Detailed explanation-1: -Examples of the magnetic material include cobalt, iron and nickel. Plastic cannot be magnetised neither can it be attracted to a magnet.

Detailed explanation-2: -Cobalt, nickel, iron and steel are attracted by magnet and hence, they are magnetic in nature.

Detailed explanation-3: -Examples of the magnetic material include cobalt, iron and nickel.

Detailed explanation-4: -Examples of magnetic substances include iron, nickel, cobalt, stainless steel, and many rare earth metals. Diamagnetic materials like copper and gold are weakly repelled by a magnetic field. Paramagnetic materials like calcium and aluminum are weakly attracted by a magnetic field.

Detailed explanation-5: -Ferromagnetic, Diamagnetic and Paramagnetic.