which best describes a characteristic of an adiabatic process?\nheat is absorbed but not released by the…

which best describes a characteristic of an adiabatic process?\nheat is absorbed but not released by the system.\nall heat added to the system is transformed into work.\nthere is a gradual shift between compression and expansion of a gas.\nwhen gas is compressed in the system, temperature remains constant.
Answer
Brief Explanations:
An adiabatic process is one in which there is no heat transfer between the system and its surroundings. The first option is wrong as no heat is absorbed or released. For an adiabatic process, the work - done on or by the system changes its internal energy. When a gas is compressed adiabatically, its temperature rises. The characteristic of an adiabatic process is that all heat added to the system (in a non - adiabatic sense, but in adiabatic there is no heat transfer) would be transformed into work if it were added. The third option about the shift between compression and expansion is not the defining characteristic. The fourth option is wrong as temperature changes during adiabatic compression or expansion.
Answer:
All heat added to the system is transformed into work.