An endothermic reaction is one in which

Work done by an ideal gas at a constant volume is

In a reversible isothermal process,the change in internal energy is

$A$ thermodynamic process $(B \rightarrow E)$ is shown in the graph below. The work done in this process is equal to the area under the curve. Identify the correct area representing the work done.

In thermodynamics,a process is called reversible when

Point out the wrong statement in relation to enthalpy.