Question

Evaporative cooling is the phenomenon _____________.

• A. in which molecule of liquid with high kinetic energy evaporates quickly, leaving behind the particle of less kinetic energy
• B. in which molecule of liquid with low kinetic energy evaporates quickly, leaving behind the particle of high kinetic energy
• C. in which density of liquid changes
• D. none of these

Answer 1

The correct option is A in which molecule of liquid with high kinetic energy evaporates quickly, leaving behind the particle of less kinetic energy

Evaporation is the surface phenomenon in which the liquid molecules that have high kinetic energy evaporates quickly from the surface of the liquid. Thus the molecules with less kinetic energy remain in the solution and, as result the temperature of the liquid decreases. This phenomenon is known as evaporative cooling.