Which of the following is intensive property

Options

A. Enthalpy
B. Volume
C. Mass
D. Surface tension

Answer

To determine which of the given properties is an intensive property, we need to understand the definitions of intensive and extensive properties.

### Step-by-Step Solution:

1. **Define Intensive and Extensive Properties:**
- Intensive properties are those that do not depend on the amount of matter present. Examples include temperature, pressure, density, and surface tension.
- Extensive properties depend on the quantity of matter. Examples include mass, volume, and enthalpy.

2. **Analyze the Given Options:**
- We need to evaluate each option to see if it is intensive or extensive.
- Let's consider the following properties:
1. **Enthalpy**: This is the total heat content of a system and depends on the amount of substance present. Therefore, it is an extensive property.
2. **Volume**: This is the space occupied by a substance and also depends on the amount of matter. Hence, it is an extensive property.
3. **Mass**: This is the quantity of matter in a substance and clearly depends on the amount. Thus, it is an extensive property.
4. **Surface Tension**: This measures the elastic tendency of a fluid surface and does not depend on the amount of fluid present. Therefore, it is an intensive property.

3. **Conclusion:**
- Among the given options, surface tension is the only property that is intensive.

### Final Answer:
The intensive property among the options is **Surface Tension**.