Identify the state functions from the following :

Options

A. Heat
B. Work
C. Enthalpy
D. Free energy

Explanation

To identify the state functions from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of State Functions**:
- State functions are properties of a system that depend only on its current state, not on how it arrived at that state. Examples include enthalpy, entropy, free energy, and temperature.

2. **Identify the Given Options**:
- We need to analyze the options provided in the question (though not explicitly mentioned here, we can assume common options like heat, work, enthalpy, and free energy).

3. **Classify Each Option**:
- **Heat**: This is a path function because its value depends on the specific process taken to transfer energy.
- **Work**: Similar to heat, work is also a path function as it depends on the manner in which energy is transferred.
- **Enthalpy**: This is a state function as it depends only on the state of the system (pressure, temperature, etc.).
- **Free Energy**: This is also a state function, as it is determined solely by the state of the system.

4. **Conclusion**:
- From the analysis, we conclude that the state functions among the options are **Enthalpy** and **Free Energy**.

### Final Answer:
- The state functions are **C (Enthalpy)** and **D (Free Energy)**.

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