Which of the following materials exhibits diamagnetism?

The variation of magnetic susceptibility $(\chi)$ with temperature $(T)$ for a diamagnetic substance is shown correctly by which graph?

Ferromagnetic materials have . . . . . . permeability and . . . . . . retentivity.

Explain hard ferromagnetic and soft ferromagnetic materials.

$A$ ferromagnetic material is heated above its $Curie$ temperature. The correct statement from the following is that

The magnetic susceptibility of a paramagnetic material is $1.0 \times 10^{-5}$ at $27^{\circ} C$ temperature. Then at what temperature its magnetic susceptibility would be $1.5 \times 10^{-5}$ (in $^{\circ} C$)?