Select the incorrect statement w.r.t. imbibition

Options

A. It is diffusion process
B. Affinity between the adsorbent and the liquid is not a pre-requisite
C. It involves both capillary action and adsorption
D. Phycocolloids are best imbibants

Answer

To solve the question regarding the incorrect statement with respect to imbibition, we will analyze the concept of imbibition and the statements provided.

### Step-by-Step Solution:

1. **Understand Imbibition**: Imbibition is the process of absorption of water by solid substances, leading to swelling. It is crucial in seed germination and the swelling of materials like wood.

2. **Identify Key Characteristics of Imbibition**:
- It involves the absorption of water by solids.
- It is a passive process, meaning it does not require energy (ATP).
- It is driven by the concentration gradient (water moves from an area of higher concentration to lower concentration).

3. **Analyze the Statements**:
- **Statement 1**: "Imbibition is the absorption of water by solid substances."
- This statement is correct.
- **Statement 2**: "Affinity between adsorbent and the liquid is not prerequisite."
- This statement is incorrect. There must be an affinity between the solid (adsorbent) and the liquid for imbibition to occur.
- **Statement 3**: "It involves both capillary action and adsorption."
- This statement is correct.
- **Statement 4**: "Phycocolloids are the best imbibants."
- This statement is also correct, as phycocolloids have a high capacity for water absorption.

4. **Conclusion**: The incorrect statement regarding imbibition is **Statement 2**, which claims that affinity between the adsorbent and the liquid is not a prerequisite.

### Final Answer:
The incorrect statement with respect to imbibition is **Statement 2**.

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