Q. Which of the following statements is incorrect?
A) Physical adsorption occurs at very low temperature and chemisorptions occur at all temperature
B) The magnitude of chemisorption decreases with rise in temperature and physisorption increases with rise in temperature
C) Chemisorption is irreversible and physisorption is reversible
D) In physisorption, the activation energy of desorption is very low and in chemisorption, the activation energy of desorption is very high
Explanation
(b)
For chemisorption, high temperature is favourable. It increases with rise in temperature. On the other hand low temperature is favourable for physisorption so it decreases with rise in temperature
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.