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PhysicsJEE Main 22 Jan 2026, Shift 1·Q16·MCQ·Easy–moderate

Thermodynamics · Thermodynamic processes

The volume of an ideal gas increases 8 times and temperature becomes (14)th\left(\frac14\right)^{\text{th}} of initial temperature during a reversible change. If there is no exchange of heat in this process (ΔQ=0\Delta Q = 0) then identify the gas from the following options (Assuming the gases given in the options are ideal gases):
  1. (1)COX2\ce{CO2}
  2. (2)OX2\ce{O2}
  3. (3)NHX3\ce{NH3}
  4. (4)He

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