A sample of any of the following substances disappears after some time when exposed to air like camphor; naphthalene; or dry ice. This phenomenon is called?

A. Sublimation
B. Evaporation
C. Diffusion
D. Radiation

Correct Answer:

Option A – Sublimation

Explanation

Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state.

Familiar substances that sublime readily include iodine, dry ice, menthol, and camphor.