Write the difference between physisorption and chemisorption.
| Physisorption | Chemisorption |
| The adsorbate forms weak Van der Waal's attraction bond on the surface of adsorbent. | The adsorbate from strong bond of attrtaction on the surface of adsorbent. |
| No new substance is formed . | New substance is formed. |
| It is a reversible process. | It is a irreversible process. |