Chemical Engineering Basics - Engineering

Q1:

Diamagnetic materials

A are magnetised by eddy currents only.

B are non-magnetic and can not be magnetised.

C are magnetised in direction opposite to the magnetic field.

D can be magnetised in one direction only.

ANS:C - are magnetised in direction opposite to the magnetic field.

Diamagnetic materials are non-magnetic and can not be magnetised. When exposed to a magnetic field, they become magnetised in a direction opposite to the applied magnetic field. This magnetisation is weak and temporary, and it opposes the external magnetic field. Therefore, the correct statement is: Diamagnetic materials are non-magnetic and can not be magnetised.