Question

camphor disappear with time without leaving any solid

Answer 1

Camphor disappears with the passage of time, thanks to a process called sublimation. Sublimation is the process by which a substance changes directly from a solid state to a gaseous state without passing through an intermediary liquid phase.

The change in physical state means that a piece of camphor left for some time will soon disappear! 

The process of Sublimation is particularly useful in purification of substances since the pure (sublime) substance can be separated from any (non-sublime) impurities present in the sample, which are left behind as residue. 

Answer 2

Explanation:

it is a process by which a substance changes directly from a solid state to a gaseous state without passing through and in liquid state