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Applicability of various empirical and semi-empirical rules to predict the refractive index of binary organic liquid mixtures is presented using some empirical and semi-empirical rules and their relative applicability. Binary mixtures of Dimethyl Carbonate and some Alcohols are chosen with a view to provide a large background of diversified experimental data. It has been found that any single formula is not applicable with same accuracy for every mixture and applicability varies according to the degree of molecular interaction taking place in the mixture.

- Mohd. Kalim Ahmad1 and Isht Vibhu2 *