Question

Write such reactions and facts about glucose which cannot be explained by its open chain structure

Answer 1

(i) Aldehydes give 2, 4-DNP test, Schiff’s test, and react with NaHSO4 to form the hydrogen sulphite addition product. ... (ii) The pentaacetate of glucose does not react with hydroxylamine. ... 

Answer 2

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Write such reactions and facts about glucose which cannot be explained by its open chain structure. ... However, glucose does not undergo these reactions. (ii) The pentaacetate of glucose does not react with hydroxylamine. This indicates that a free -CHO group is absent from glucose.