Verified Solution • 2025–26 Session moderate

QNEET-2021-Ch-563: NEET 2021 Chemistry - Class 11 NEET-2021-Ch-563 Solution: For irreversible expansion of an ideal gas under isothermal…

For irreversible expansion of an ideal gas under isothermal condition the correct option is: ΔU≠0ΔStotal=0\Delta U \neq 0 \Delta S_{total} = 0 ΔU=0ΔStotal=0\Delta U = 0 \Delta S_{total} = 0 ΔU≠0ΔStotal≠0\Delta U \neq 0 \Delta S_{total} \neq 0 ΔU=0ΔStotal≠0\Delta U = 0 \Delta S_{total} \neq 0

Multiple Choice Options

  • A Δ\Delta _ U ≠\ne _ = 0, Δ\Delta _ S total = 0
  • B Δ\Delta _ U = 0, Δ\Delta _ S total = 0
  • C Δ\Delta _ U ≠\ne _ = 0, Δ\Delta _ S total ≠\ne _ = 0
  • D Δ\Delta _ U = 0, Δ\Delta _ S total ≠\ne _ = 0

Step-by-Step Verified Solution

_ For a spontaneous process, _ S total > 0 and since irreversible process is always spontaneous therefore _ S total > 0. _ Since _ U = nC V _ T and _ T = 0 for isothermal process therefore _ U = 0.

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring