A sample of gas is compressed from an initial volume of $2V_0$ to $V_0$ using three different processes First: Using reversible isothermal Second: Using reversible adiabatic Third: Using irreversible adiabatic under a constant external pressure, then :

Final temperature of gas will be highest at the end of second process.

Enthalpy change of sample will be highest in isothermal process. (magnitude wise)

Final temperature of gas will be highest at the end of third process .

Final pressure of gas will be highest at the end of second process.