There are $2.0 \times 10^{24}$ molecular dipoles in a paramagnetic salt. Each has a dipole moment of $1.5 \times 10^{-23} \text{ A m}^2$. Find the maximum (saturation) magnetization in the specimen. (in $\text{ A m}^2$)

Curie temperature is the temperature above which

What is a diamagnetic substance?

The phenomenon of perfect diamagnetism in superconductors is called the . . . . . . .

For which of the following substances, the magnetic susceptibility is independent of temperature?

Pick out the $WRONG$ statements about magnetic substances ($\chi = \text{magnetic susceptibility}$, $\mu_r = \text{relative permeability}$).
$I$. Substances with $-1 \le \chi < 0$ are diamagnetic
$II$. Substances with $\chi \gg 1$ are paramagnetic
$III$. Substances with $\chi \ll 1$ are ferromagnetic
$IV$. Substances with $\mu_r \gg 1$ are ferromagnetic