Write any two reactions of glucose which cannot be explained by t… - Vidyadip

Question

Write any two reactions of glucose which cannot be explained by the open chain structure of glucose molecule.

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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 $\ce{NaHSO3}$.
The pentaacetate of glucose does not react with hydroxylamine indicating the absence of free $–\ce{CHO}$ group.

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