Give examples of ferrimagnetism.

Which of the following compounds is ferroelectric?

What are the characteristics of intermolecular distance and intermolecular forces in a solid state?

Solid $A$ is a very hard electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?

Explain paramagnetism and diamagnetism. Write a note on ferromagnetism. Explain antiferromagnetism.

Choose the correct option for crystalline solids based on the following statements:
$(1)$ They do not have a sharp melting point.
$(2)$ They gradually soften upon heating.
$(3)$ They have an irregular three-dimensional arrangement.
$(4)$ They show a rapid change in volume upon heating.