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NTA AbhyasNTA Abhyas 2020Biomolecules
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Solution:
Molisch's testis used for the presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid or hydrochloric acid to produce an aldehyde, which condenses with two molecules of a phenol (usually α -naphthol, though other phenols such as resorcinol and thymol also give colored products), resulting in a violet ring.