Which of the following relations does not give the equation of an adiabatic process, where terms have their usual meaning?

For an adiabatic process,  PVγ= constant                                       ......(i) According to ideal gas equation  PV=nRT⇒P=nRTV Putting (i), we get nRTVVγ= constant  ∴  TVγ-1= constant  Again from the ideal gas equation Putting (i), we get PnRTPγ= constant  P1-γTγ= constant