The thermodynamic process in which temeprature remains constant is

Options

A. Adiabatic process
B. Isochoric process
C. Isobaric process
D. Isothermal process

Answer

To solve the question regarding the thermodynamic process in which temperature remains constant, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which thermodynamic process maintains a constant temperature.

2. **Define the Processes**:
- **Isothermal Process**: This is a process where the temperature remains constant throughout. In this case, the change in temperature (ΔT) is equal to zero.
- **Adiabatic Process**: In this process, there is no heat exchange with the surroundings (Q = 0), but the temperature can change.
- **Isobaric Process**: This process occurs at constant pressure, but the temperature can vary.
- **Isochoric (or Isophoric) Process**: In this process, the volume remains constant, but the temperature can change.

3. **Identify the Correct Process**: From the definitions:
- The only process where the temperature remains constant is the **Isothermal Process**.

4. **Conclusion**: Therefore, the thermodynamic process in which temperature remains constant is the **Isothermal Process**.

### Final Answer:
The correct answer is the **Isothermal Process**.