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JEE Main Chemistry question

ChemistryBiomoleculesJEE Main

An aqueous solution of carbohydrate with 2 drops of alcoholic solution of α-naphthol and gives a ring at the junction. The colour of the ring is:

Answer: (C)

Solution

This is Molisch's test for carbohydrates: concentrated sulphuric acid dehydrates the sugar to a furfural derivative, which condenses with

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Question ID VK-150981