Which of the following statements is not correct for chemisorption and physisorption ?
A. Physical adsorption occurs at a low temperature and chemisorption occurs at all temperature
B. Magnitude of chemisorption decreases with rise in temperature while physisorption increases with rise in temperature .
C. Chemisorption is irreversible and physisorption is reversible .
D. In physisorption activation energy is low while in chemisorption it is high.
