Which of the following statements is incorrect?

  • A
    Physisorption is reversible,whereas chemisorption is irreversible.
  • B
    Physisorption is observed at high pressure,while chemisorption is observed at low pressure.
  • C
    Physisorption is non-specific,whereas chemisorption is highly specific.
  • D
    Chemisorption requires high activation energy.

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