In the given diagram, one process is adiabatic and the other is isothermal. It can be said that process AB is adiabatic. True or False?

A Thermodynamic process is a process in which the thermodynamic state of a system is changed. A change in a system is defined by a passage from an initial to a final state of thermodynamic equilibrium. In classical thermodynamics, the actual course of the process is not the primary concern, and often is ignored.