Question

There is desorption of physical adsorption when :

• A. temperature is increased
• B. temperature is decreased
• C. pressure is increased
• D. concentration is increased

Answer 1

Answer: (A)

temperature is increased

There is desorption of physical adsorption when temperature is increased.
The process of removal of an adsorbed substance from the surface on which it is adsorbed is called desorption. It is the reverse of adsorption and can be brought about by heating or by reducing the pressure.