Question

The moving air from the hair dryer removes the molecules of liquids as soon as they escape from the surface of your hair.
Which factor of evaporation is responsible for the above example?

• A. Temperature
• B. Motion of air
• C. Nature of liquid
• D. Humidity of surrounding

Answer 1

The correct option is B Motion of air

Evaporation is a process in which some molecules of a liquid, which have greater kinetic energy, escape from the liquid and enter the atmosphere.

Evaporation occurs faster at a higher temperature.

The wind of the hairdryer being hotter than room temperature, speeds up the evaporation process.