#### The correct options are

**A** A gas having negligible size and reasonable intermolecular force follows (P+aV2m)(Vm)=RT

**C** A gas having negligible size and negligible intermolecular force follows: PVm=RT

The equation of state for a gas having negligible volume and reasonable intermolecular forces is (P+aV2m)(Vm)=RT..

The equation of state for a gas having negligible volume and negligible intermolecular forces is PVm=RT.

The second equation can be obtained from first equation by substituting a=0.

The first equation can be obtained from Van der Waals equation of state (p+aV2m)(Vm−b)=Rt by substituting b=0.