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** Q 1145323263. ** A `5.25%` solution of a substance is isotonic with a `1.5%` solution of urea (molar mass = `60 g mol^-1`) in the same solvent. If the densities of both the solutions are assumed to be equal to `1.0 gcm^-3`, molar mass of the substance will be

**JEE 2007 **