Give reason why a finely divided substance is more effective as an adsorbents?

Explanation

### Step-by-Step Solution:

1. **Understanding Adsorption**:
- Adsorption is a surface phenomenon where molecules adhere to the surface of a solid or liquid. The effectiveness of an adsorbent is largely determined by its surface area.

2. **Surface Area and Adsorption**:
- The amount of adsorption that occurs is directly proportional to the surface area of the adsorbent. This means that the larger the surface area, the more molecules can adhere to it.

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