Ultrasonic velocity, density and viscosity of binary liquid mixtures of chloroform and methanol has been measured using ultrasonic interferometer, 30 ml gravity bottle and Oswald’s viscometer respectively at frequency 2MHz and constant temperature of 295K. Experimental values then obtained are used for determining various thermo acoustical parameters like adiabatic compressibility, acoustic impedance, intermolecular free length, relaxation time, ultrasonic attenuation, effective molar weight, free volume, available volume, molar volume, Wada’s constant, Rao’s constant, Vander Waal’s constant, internal pressure, Gibb’s free energy and enthalpy. Graphs are plotted of each parameter against mole fraction. The linear variation in most of the acoustical parameters showed that there is no complex formation in the mixture. The weak interaction between the molecules of the binary mixture is founded.