Question

Encircle the odd one out. Give reason for your choice

Iron, nickel, copper and cobalt

Answer 1

1. The materials which attract towards a magnet are called magnetic materials
2. Those materials which do not attract towards the magnet are called nonmagnetic materials.
3. In Iron, nickel, copper and cobalt only copper is nonmagnetic materials and remaining are magnetic materials.

Hence,copper is odd one since it is nonmagnetic material.