Soap removes grease by 

Options

A. adsorption
B. emulsification
C. coagulation
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Problem:**
- The question asks how soap removes grease. It provides four options: adsorption, emulsification, coagulation, and none of these.

2. **Identifying the Nature of Grease:**
- Grease is primarily composed of oils, which are non-polar substances. Non-polar substances do not mix well with water, which is a polar substance.

3. **Role of Soap:**
- Soap is an amphiphilic molecule, meaning it has both a hydrophilic (water-attracting) and a hydrophobic (water-repelling) part. This characteristic allows soap to interact with both water and grease.

4. **Emulsification Process:**
- When soap is added to a mixture of water and grease, the hydrophobic tails of the soap molecules attach to the grease (oil), while the hydrophilic heads remain in the water.
- This interaction allows the soap to break up the grease into smaller droplets, effectively dispersing it in the water. This process is known as emulsification.

5. **Formation of Micelles:**
- As soap molecules surround the grease, they form structures called micelles. In a micelle, the grease is trapped in the center, while the hydrophilic heads of the soap molecules face outward, interacting with water.
- This allows the grease to be rinsed away with water.

6. **Conclusion:**
- Based on the explanation, the correct answer to the question is that soap removes grease by **emulsification**.

**Final Answer:**
- Soap removes grease by **emulsification** (Option 2).

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