A sample of any of the following substances disappears after sometime when exposed to air like camphor, naphthalene or dry ice. This phenomenon is called
- ASublimation
- BEvaporation
- CDiffusion
- DRadiation
Show answer and explanation
Correct answer: (a) Sublimation
Explanation
Sublimation is the direct change of a solid into vapour without passing through the liquid state.
Camphor, naphthalene and dry ice (solid CO₂) sublime when exposed to air, so they vanish over time.