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# What is Molisch's test?

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## Molisch's testMolisch’s test is a chemical test that is used to check for the presence of carbohydrates in a given sample.This test is named after Austrian botanist Hans Molisch.Molisch’s test involves the addition of Molisch’s reagent {a solution of α-naphthol in ethanol $\left({\mathrm{C}}_{2}{\mathrm{H}}_{5}\mathrm{OH}\right)$} to the sample and the subsequent addition of a few drops of concentrated ${\mathrm{H}}_{2}{\mathrm{SO}}_{4}$ (sulphuric acid ) to the mixture.Tetrose and triose sugars don’t give Molisch’s test.The principle of Molisch's test is the dehydration of sulphuric acid into furfural.Positive Molisch's Test The formation of a purplish-red ring at the point of contact between sulphuric acid ${\mathrm{H}}_{2}{\mathrm{SO}}_{4}$ and the analyte + Molisch’s reagent mixture confirms the presence of carbohydrates in the sample.

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