Imbibition occurs when

Options

A. Grapes are dipped in saturated solution
B. Wood is placed in ether
C. Rubber is dipped in ether
D. Rubber is dipped in water

Answer

**Step-by-Step Solution:**

1. **Understanding Imbibition**: Imbibition is the process of absorption of water by solid colloids, which leads to an increase in volume. This process is crucial in biological systems, particularly in seed germination and the swelling of plant tissues.

2. **Analyzing the Options**:
- **Option A**: Grapes are dipped in saturated solutions. This does not describe imbibition, as it involves a solution rather than a solid colloid absorbing water.
- **Option B**: Wood is placed in ether. Wood is not a colloidal substance that absorbs ether in the context of imbibition.
- **Option C**: Rubber is dipped in ether. Rubber is a colloidal substance and can absorb ether, which is consistent with the definition of imbibition.
- **Option D**: Rubber is dipped in water. While rubber can absorb water, the question specifically asks about imbibition in the context of a substance absorbing a solvent like ether.

3. **Conclusion**: Based on the definitions and analysis of the options, the correct answer is **Option C: rubber is dipped in ether**. This is because rubber, being a colloidal substance, undergoes imbibition when it absorbs ether.

**Final Answer**: The correct answer is **C: rubber is dipped in ether**.

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