The density and viscosity of solutions of methanol, ethanol, glucose and sucrose in distilled water at various temperatures were reported and compared with the available literature data. Data obtained was used to understand the interactions of substrates in solution. Influence of concentration of substrates and salts on strengthening or weakening of these interactions was evaluated. Apparent molar volumes were estimated from density data of different systems. The presence of various polar groups in the molecules showed varying interactions and there by the viscosity also varies. The results reveal that the molecular interactions strongly depend on the polarity and the substituents attached to the hydroxyl groups. Influence of nature of substrates and the other ions commonly present in water is discussed. Also, we have analyzed the relations between alcohols and their properties using a data analysis technique, Formal Concept Analysis (FCA). © 2014, Sphinx Knowledge House. All rights reserved.