which of the following statements is not true ?

Options

A. Paramagnetic substances are weakly attracted by magnetic field
B. Ferromagnetic substance cannot be magnetised permanently
C. the domains in antiferromagnetic substance are oppositely oriented with respect to each other
D. Paring of electrons cancels their magnetic moment in the diamagnetic substances

Answer

B

Explanation

Ferroagnetic substances can be magetised by magnetic flied to it and magnetic property persist within it evan after removal of magnetic filed . Hence choice (b) is the correct answer while other three chices are correct.