An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric and isochoric. The curve which represents the adiabatic process among 1, 2, 3 and 4 is [2022]

(2)
When a thermo-dynamic system undergoes a change in such a way that there is no exchange of heat with the surrounding, then the process is known as adiabatic process and the slope of adiabatic is more than isothermal.
