Question

Which of the following option correctly differentiates between evaporation and boiling?

• A. Evaporation takes place only at boiling point, i.e., ${100}^{\circ }C$.
• B. Evaporation takes place at temperatures below the boiling point.
• C. Evaporation takes place only above boiling point.
• D. Both evaporation and boiling are same.

Answer 1

The correct option is B

Evaporation takes place at temperatures below the boiling point.

$\bullet$ During evaporation, a liquid gets converted into its vapour form at temperstures below its boiling point. For example, clothes dry when water present in them evaporates and this occurs below boiling point of water.
$\bullet$ Boiling is a bulk phenomenon which takes place throughout the liquid. In this, liquid is converted to its vapour form at its boiling temperature. For example, water boils at 100${}^o\text{C}$.