A sugar ‘X’ dehydrates very slowly under acidic condition to give furfural which on further reaction — Practical Organic Chemistry and Purification Chemistry Question
Question
A sugar ‘X’ dehydrates very slowly under acidic condition to give furfural which on further reaction with resorcinol gives the coloured product after sometime. Sugar ‘X’ is (A) Aldopentose (B) Aldotetrose (C) Oxalic acid (D) Ketotetrose
Answer: D) KETOTETROSE
💡 Solution & Explanation
This is based on Seliwanoff’s test which is used to distinguish between aldoses and Ketoses. Ketoses give this test more rapidly than aldoses because they are more rapidly dehydrated than aldoses.
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