In an adiabatic process, the quantity which remains constant is:A. Total heat of systemB. TemperatureC. VolumeD. Pressure

In an adiabatic process, the quantity that remains constant is:

D. Pressure

An adiabatic process is one in which there is no heat exchange with the surroundings (Q = 0). In such a process, the change in the internal energy of the system is solely due to work done on or by the system. For an ideal gas undergoing an adiabatic process, the relationship between pressure (P) and volume (V) is given by:

P * V^γ = constant

where γ (gamma) is the heat capacity ratio (also known as the adiabatic index) and depends on the specific properties of the gas. This equation shows that as the volume changes, the pressure of the gas also changes to maintain the constant product of pressure and volume raised to the power of γ. This implies that pressure remains constant throughout the process.

Temperature is not constant in an adiabatic process, and neither is the total heat of the system. Volume is related to pressure through the above equation, so it changes as well.