GEOLOGY

Detailed explanation-1: -The correct option is A Copper.

Detailed explanation-2: -Copper is not a magnetic material. When placed near a magnet, copper is not attracted to the magnet.

Detailed explanation-3: -Materials that are not attracted by magnet are called non-magnetic material. Paper, wood, brass etc. are example of non-magnetic material.

Detailed explanation-4: -Copper. The copper itself does not have magnetic properties, but it interacts with magnets in some way (for example: eddy currents). Power plants use this property to generate electricity. By using this principle, metal detectors can detect non-magnetic metals like gold and silver.

Detailed explanation-5: -Cobalt, nickel, iron and steel are attracted by magnet and hence, they are magnetic in nature. Aluminium, copper and lead are non magnetic in nature.