Which of the following statements about evaporation and boiling is FALSE?
A
Evaporation may take place at any temperature.
B
In evaporation, vapour escapes only from the surface of a liquid
C
The temperature remains constant as long as the liquid is boiling
D
The temperature at which boiling takes place can be altered by changing the external pressure
E
The rate of evaporation does not depend on temperature.
Verified Correct Answer: E.
Physical Principles & Numerical Solution
Differences between Evaporation and Boiling
Evaporation
Boiling
Evaporation is a normal process that occurs when the liquid form changes into the gaseous form; while causing an increase in the pressure or temperature.
Boiling is an unnatural process where the liquid gets heated up and vaporized due to continuous heating.
Evaporation usually occurs on the heated liquid’s surface.
Boiling usually occurs on the entire mass of the heated liquid.
The bubbling effect is not visible in evaporation.
The bubbling effect is visible during the process of boiling.
produces a cooling effect.
does not produce a cooling effect.
The process of evaporation is slow.
The process of boiling is much quicker.
Source: Myschool Past Questions Archive (Record #42797)