Question
List the reactions of glucose which cannot be explained by its open chain structure.
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Answer
- Despite having the aldehyde group, glucose does not give $2, 4-\text{DNP}$ test or Schiff’s test.
- It does not form the hydrogensulphite addition product with $\ce{NaHSO_3}$.
- The pentaacetate of glucose does not react with hydroxylamine indicating the absence of free $–\text{CHO}$ group.
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