When a magnetic substance is heated,then it

Magnets cannot be made from which of the following substances?

If $M_z$ is the magnetization of a paramagnetic sample,$B$ is the external magnetic field,$T$ is the absolute temperature,and $C$ is the Curie constant,then according to Curie's law in magnetism,the correct relation is:

Among the following properties describing diamagnetism, identify the property that is wrongly stated.

In a permanent magnet at room temperature,

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$. Consider a ferromagnetic material:
Assertion $(A)$: The individual atoms in a ferromagnetic material possess a magnetic dipole moment and interact with one another in such a way that they spontaneously align themselves forming domains.
Reason $(R)$: At high enough temperature, the domain structure of a ferromagnetic material disintegrates. Thus, magnetization will disappear at a high enough temperature known as the Curie temperature.
In the light of the above statements, choose the correct answer from the options given below: