The ruthenium-manganese bimetallic alloy system was prepared by co-impregnation method from the ionic solution of ruthenium chloride and manganese chloride dispersed on the high surface area aluminium oxide support and reduced to metallic form at 450 degrees C under hydrogen flow. The prepared sample was characterised using BET surface area measurement and atomic adsorption spectroscopy. The prepared sample was then subjected to carbon monoxide hydrogenation reaction in the continuous flow reactor. The sample was then taken out of the reactor and transferred to Secondary ion mass spectrometer, X-ray photo electron spectrometer and Infra red spectrometer for study. The study indicates the presence of CH2 group on the surface. On the basis of this intermediate a mechanism for the formation of higher hydrocarbons in the Fischer Tropsch Synthesis has been postulated. In this manuscript modern spectroscopic techniques have been used in determining the chain growth intermediate for the well known Fischer Tropsch Synthesis used for the production of hydrocarbon products in the Petrochemical Industry.