oints) A gas enclosed in a cylinder can be compressed/decompressed, or heated/cooled in different ways. In the diagram below, i) Which process is isothermal? i) Which process has no work done on or by the gas? ii) Which process is adiabatic? iv) Can an isobaric process maintain a constant 7i 72 temperature, T? Y or N. T4 Solution The process C is isothermal because the temperature is same throughout as T3. The process A has no work done on or by the gas because the area under this curve is zero. The process B which is more steeper than the constant temperature process is the adiabatic process. An isobaric process, where the volume is also constant, can maintain a constant temperature T. Y I .