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List the reactions of glucose which cannot be explained by its open chain structure.

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asked Dec 30, 2017 in Chemistry by sforrest072 (157,439 points) ● 61 ● 410 ● 937
List the reactions of glucose which cannot be explained by its open chain structure.

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answered Dec 30, 2017 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Dec 30, 2017 by sforrest072
 
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(i) Despite having the aldehyde group, glucose does not give 2, 4 DNP test or Schiff’s test.
(ii) It does not form hydrogensulphite addition product with NaHSO3.
(iii) The penta acetate of glucose does not react with hydroxylamine indicating the absence of free – CHO group.

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