Pick the extensive property from the given options

Options

A. Viscosity
B. Refractive index
C. Density
D. Heat capacity

Answer

To determine the extensive property from the given options, we will follow these steps:

### Step 1: Understand the Definitions
- **Extensive Properties**: These are properties that depend on the amount or mass of the substance. If the quantity of the substance increases, the value of the extensive property also increases.
- **Intensive Properties**: These properties do not depend on the amount of substance. They remain constant regardless of the quantity.

### Step 2: Analyze Each Option
1. **Viscosity**: This is the measure of a fluid's resistance to flow. It is an intensive property because it does not change with the amount of fluid present.

2. **Refractive Index**: This property measures how much light bends when entering a material. It is also an intensive property, as it remains constant regardless of the size of the material sample.

3. **Density**: This is the mass per unit volume of a substance. Density is an intensive property because it does not change with the amount of substance.

4. **Heat Capacity**: This is the amount of heat required to change the temperature of a substance by one degree Celsius. Heat capacity is an extensive property because it increases with the amount of substance present.

### Step 3: Conclusion
From the analysis, the only extensive property among the options provided is **heat capacity**.

### Final Answer:
The extensive property from the given options is **heat capacity**.

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