Give an example of process in which no heat is transferred to or from the system but temperature of the system changes.

Adiabatic compression is the process in which no heat is transferred to or from the system but the temperature of the system changes. When we compress a gas in an adiabatic process the volume of the gas will decrease and the temperature of the gas rises as it is compressed which we seen the warming of a bicycle pump. Conversely, the temperature falls when the gas expands but the heat remains constant throughout the process.