In thermodynamics,which one of the following is not an intensive property?

What is the work done when $2 \text{ mole}$ of an ideal gas are expanded isothermally and reversibly from $5 \text{ m}^{3}$ to $10 \text{ m}^{3}$ at $300 \text{ K}$ (in $\text{ kJ}$)? $(R=8.314 \text{ J K}^{-1} \text{ mol}^{-1})$

In which of the following processes does the internal energy of a system remain constant?

The difference between $\Delta H$ and $\Delta U$ is usually significant for systems consisting of:

An adiabatic process is experienced by a/an ...... system.

Which of the following statements is not correct?