Multiple choice

Why do you feel a cooling sensation on skin after application of balms like Vicks or Iodex?

  1. because of condensations of constituents of the balm.

  2. because of evaporation of constituents of the balm.

  3. because of liquification of constituents of the balm.

  4. because of sublimation of constituents of the balm.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The constituent of the balm evaporates and evaporation is always accompanied by the cooling of the surface from which the constituent evaporates.

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