Question

give two examples of the substances which undergo sublimation​

Answer 1

naphthalene, dry ice

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Answer 2

Sublimation is, in fact, a universal phenomenon exhibited by all solids at temperatures below their triple points. However, sublimation is a scientifically and technically useful phenomenon only when the vapor pressure of the solid phase is high enough for the rate of vaporization to be rapid. Four of such solids include iodine, sulphur, naphthalene, and even dry ice (solid carbon dioxide).