Solid methane is

Which among the following statements is $NOT$ true about covalent network solids?

Soldiers of Napoleon's army while at the Alps during a freezing winter suffered a serious problem regarding the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to

Which among the following solids is a non-polar solid?

What are molecular solids? State its types.

Which of the following is an example of an ionic solid?