Detergent action of synthesis detergents is due to their.

Options

A. Interfacial area
B. High molecular weight
C. Ionisation
D. Emulsifying properties

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the detergent action of synthetic detergents and what property allows them to function effectively.

2. **Identifying Key Properties**: Synthetic detergents are known for their ability to interact with both water and oil. This dual interaction is crucial for their cleaning action.

3. **Emulsifying Properties**: The primary reason for the detergent action of synthetic detergents is their emulsifying properties. Emulsifiers are substances that help to mix two immiscible liquids, such as oil and water.

4. **Mechanism of Action**: When synthetic detergents are added to a mixture of oil and water, they reduce the surface tension between the two, allowing them to mix. This process helps to encapsulate oil particles, allowing them to be washed away with water.

5. **Conclusion**: Therefore, the detergent action of synthetic detergents is due to their emulsifying properties, which enable them to remove both oil-based and water-based impurities.

6. **Final Answer**: The correct option regarding the detergent action of synthetic detergents is their emulsifying properties.

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