  We study black hole candidate (BHC) MAXI~J1836-194 during its 2011 outburst
with Two Component Advective Flow (TCAF) model using RXTE/PCU2 data in
$2.5-25$~keV band. From spectral fit, accretion flow parameters such as
Keplerian disk rate ($\dot{m_d}$), sub-Keplerian halo rate ($\dot{m_h}$), shock
location ($X_{s}$) and compression ratio (R) are extracted directly. During the
entire phase of the outburst, quasi-periodic oscillations (QPOs) are observed
sporadically. From the nature of the variation of accretion rate ratio
(ARR=$\dot{m_h}$ / $\dot{m_d}$) and QPOs, entire period of the outburst is
classified in two spectral states, such as, hard (HS), hard-intermediate
(HIMS). Unlike other transient BHCs, no signature of soft (SS) and
soft-intermediate (SIMS) spectral states are observed during entire phase of
the outburst
