In earlier days it is possible for a scientist not only to master in his own field but also to have a working knowledge of all related fields. With the growth of scientific knowledge it became increasingly necessary to specialize in the theoretical and experimental investigation by putting much effort. Today very few are able to master even a single field like material science completely. This is because the physical behavior of a given material may be characterized by a set of macroscopic measurable quantities such as electrical conductivity, magnetic permeability, dielectric constant etc, and the chemical behavior like its reaction with different compounds. The material structures and contents may be achieved only if the scientist knows about theoretical background and technological aspects of the material to be studied. Hence the author tried to evaluate the theoretical parameters of the selected components when it is exposed to ultrasonic waves. In this study the chosen binary system is bromo benzene with O-xylene, Mxylene and P-xylene at different temperatures namely 293K, 303K, and 313K. The experimental values of ultrasonic velocity and density of binary mixtures of bromo benzene with O-xylene, M-xylene and P-xylene are taken from the work of P.S. Nigam et al and the sample selection is mainly due to the availability of the experimental data. Three methods namely Nomoto, Van deal and CFT are used for theoretical evaluation of ultrasonic parameters. The obtained results with different mole fraction are suitably interpreted using hydrogen bonding and dipole-dipole interaction. Also it reveals that Nomoto method is found to be suitable for theoretical evaluation of both binary mixtures.