The nature of foces involved in physical adsorption are ………..

Explanation

**Step-by-Step Solution:**

1. **Understanding Physical Adsorption**:
Physical adsorption, also known as physisorption, is a process where molecules adhere to a surface through weak intermolecular forces.

2. **Identifying the Forces**:
The forces involved in physical adsorption are primarily van der Waals forces. These are weak forces that arise due to temporary dipoles that occur when electron clouds around atoms fluctuate.

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