  The bulk viscosity of hot QCD medium has been obtained in the presence of
strong magnetic field. The present investigation involves the estimation of the
quark damping rate and subsequently the thermal relaxation time for quarks in
the presence of magnetic field while realizing the hot QCD medium as an
effective Grand-canonical ensemble of effective gluons and quarks-antiquarks.
The dominant process in the strong field limit is $1\rightarrow 2$
($g\rightarrow q \bar{q}$) which contributes to the bulk viscosity in a most
significant way. Further, setting up the linearized transport equation in the
framework of an effective kinetic theory with hot QCD medium effects and
employing the relaxation time approximation, the bulk viscosity has been
estimated in lowest Landau level (LLL) and beyond. The temperature dependence
of the ratio of the bulk viscosity to entropy density indicates towards its
rising behavior near the transition temperature.
