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
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
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.
Source: WAEC / JAMB / NECO Classroom Archive (Record #60468)