Question
Which of the following processes exhibits, U = 0?
MHT CET
Chemistry
Thermodynamics (C)
2026
MHT CET 2026 (11 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Adiabatic process
- B. Isothermal process
- C. Isobaric process
- D. Isochoric process
Answer
B. Isothermal process
Step-by-step solution
The internal energy of an ideal gas is a function of temperature only. The change in internal energy is given by U = n C_v T. In an isothermal process, the temperature of the system remains constant, which implies T = 0. Substituting T = 0 yields U = 0. Therefore, an isothermal process exhibits U = 0. Answer: Isothermal process
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