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JEE CHEMISTRY MCQ: BIOMOLECULES

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Aqueous solution of carbohydrate with 2 drops of alcoholic solution of

\alpha

-naphthol and

{\mathrm{H}_2}\mathrm{S}{\mathrm{O}_4}

gives a ring at the junction. The colour of the ring is:

View answer and explanation

Correct option: C

Violet

Option C (Violet) is correct because the Molisch test, which uses

\alpha

-naphthol and sulfuric acid, produces a violet ring at the junction when carbohydrates are present.

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