When a ferromagnetic material is heated to a temperature above its Curie temperature,the material

Consider the following two statements $A$ and $B$ and identify the correct choice in the given answers.
$A$. Paramagnetism is explained by domain theory.
$B$. Susceptibility of a diamagnetic substance is independent of temperature.

Three identical bars $A, B$ and $C$ are made of different magnetic materials. When kept in a uniform magnetic field,the field lines around them look as follows: Make the correspondence of these bars with their material being diamagnetic $(D)$,ferromagnetic $(F)$ and paramagnetic $(P)$.

Materials suitable for permanent magnets must have which of the following properties?

Choose the $CORRECT$ variation of $\mu$ (permeability of material) with magnetising field intensity $(H)$ for a ferromagnetic material.

Assertion: $A$ disc-shaped magnet is levitated above a superconducting material that has been cooled by liquid nitrogen.
Reason: Superconductors repel a magnet.