Question
Write any two reactions of glucose which cannot be explained by the open chain structure of glucose molecule.
✓
Answer
- Despite having the aldehyde group, glucose does not give 2,4-DNP test or Schiff’s test.
- It does not form the hydrogensulphite addition product with NaHSO3.
- The pentaacetate of glucose does not react with hydroxylamine indicating the absence of free –CHO group.
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