Question:
In an Isothermal process:
In an Isothermal process:
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Isothermal = Constant Temperature. Adiabatic = No Heat Exchange. Isobaric = Constant Pressure. Isochoric = Constant Volume.
Updated On: May 5, 2026
- Internal energy of the system never remains constant
- Total heat energy of the system remains constant
- Volume of the system remains constant
- Temperature of the system remains constant
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The Correct Option is D
Solution and Explanation
Step 1: Concept
By definition, an isothermal process is a thermodynamic process in which the temperature of the system remains constant.
Step 2: Meaning
"Iso" means same, and "thermal" relates to heat/temperature. During this process, $\Delta T = 0$.
Step 3: Analysis
Since the temperature is constant, for an ideal gas, the internal energy (which depends only on temperature) also remains constant ($\Delta U = 0$).
Step 4: Conclusion
Option (D) correctly identifies the defining characteristic of the process.
Final Answer: (D)
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