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A sample of any of the following substances disappears after some time when exposed to air...

Chemistry
JAMB 2021

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
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Correct Answer: Option A
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.

There is an explanation video available below.


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Explanation Video

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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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