  Tidal deformation of neutron star with multiquark core is calculated using
nuclear and multiquark equations of state. The equation of state of the
multiquark phase from the holographic Sakai-Sugimoto~(SS) model is relatively
stiff in the low density region and becomes softer at high densities. The
values of Love number and dimensionless deformation parameter, $k_{2}$ and
$\Lambda$, are found to be within the physically viable range under the present
constraints. Radial pulsation frequencies of the multiquark core for $n=0-5$
modes are calculated for the entire mass range. For $M_{\rm core}\simeq 2
M_{\odot}$, the fundamental-mode frequency is approximately $2.5$ kHz for the
energy density scale $\epsilon_{s}=23.2037$ GeV/fm$^{3}$ of the holographic SS
model, this frequency is proportional to $\sqrt{\epsilon_{s}}$.
