  If the negative cosmological constant is treated as a dynamical pressure and
if the volume be its thermodynamically conjugate variable then the
gravitational mass can be expressed as the total gravitational enthalpy rather
than the energy. Under these circumstances, a new phenomena emerges in the
context of extended phase space thermodynamics. We \emph{examine} here these
features for recently discovered Van-der-Waal (VDW) black hole (BH)
\cite{mann15} which is analogous to the VDW fluid. We show that the
thermodynamic volume is \emph{greater} than the naive geometric volume. We also
show that the \emph{Smarr-Gibbs-Duhem} relation is satisfied for this BH.
Furthermore, by computing the thermal specific heat we find the local
thermodynamic stability criterion for this BH. It has been observed that the BH
does \emph{not} possess any kind of second order phase transition. This is an
interesting feature of VDW BH by its own right. Moreover, we also derive
\emph{Cosmic-Censorship-Inequality} for this class of BH. In addition finally,
we compute the \emph{logarithmic correction} to the entropy of this BH due to
the quantum fluctuations around the thermal equilibrium.
