Identify the intensive quantity from the following

Options

A. Enthalpy and pressure
B. Volume and pressure
C. Enthalpy and volume
D. Pressure and refractive index

Answer

To identify the intensive quantity from the given options, we need to understand the distinction between 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 substance present. They remain constant regardless of how much of the substance you have.
- Extensive properties, on the other hand, depend on the quantity of the substance. They change when the amount of substance changes.

2. **List the Given Options**:
- (Assuming the options are: Enthalpy, Pressure, Volume, Refractive Index)

3. **Analyze Each Option**:
- **Enthalpy**: This is an extensive property because it depends on the amount of substance. For example, the enthalpy of a system will change if you double the amount of the substance.
- **Pressure**: This is an intensive property. Pressure remains the same regardless of the volume of gas present in a container. It is defined as force per unit area and does not change with the amount of gas.
- **Volume**: This is an extensive property. The volume of a substance will change if the amount of substance changes. For example, if you have a larger quantity of water, the volume will be greater.
- **Refractive Index**: This is an intensive property. The refractive index of a substance is a characteristic property that does not change with the amount of the substance.

4. **Identify the Intensive Quantities**:
- From the analysis, we see that both Pressure and Refractive Index are intensive properties. However, if we are to choose one, we can select Pressure as the most commonly recognized intensive property.

5. **Conclusion**:
- The intensive quantity identified from the options is **Pressure**.