Which of the following is not a point of difference between physisorption and chemisorption?

• A
  Magnitude of chemisorption first increases then decreases but that of physisorption decreases with rise in temperature
• B
  Chemisorption is an irreversible process whereas physisorption is reversible in nature
• C
  Activation energy is high for physisorption and low for chemisorption
• D
  Physisorption results in the formation of multimolecular layer,while only unimolecular layer is formed in case of chemisorption