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Pharmaceutical Analysis 2nd sessional important questions Pharmaceutical analysis is primarily concerned with the determination of active ingredients, contaminants, excipients, content homogeneity, solubility, dissolving rate, and stability in drugs, raw materials, and pharmaceutical formulations. Only if the wavelength employed is not interfered with by other species may direct analysis of target chemicals be performed. Derivative spectrophotometry, chemometrics, or a chemical derivative obtained through reactions such as redox, ion pairing, metal ion chelation, azo dye derivatization, Schiff base creation, and charge transfer complex synthesis can all be used to analyse mixtures of components. Important questions Question - Definition of Gravimetry and principle ? Answer -   gravimetric analysis is method of quantitative determination of an analyte based on the mass of a solid the quantitative determination of a substance by precipitation followed by isolation and weighting of the pr