The reagents with which glucose does not react to give the corresponding tests/products are: A. Toll

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Question

The reagents with which glucose does not react to give the corresponding tests/products are: A. Tollen's reagent B. Schiff's reagent C. HCN D. NH2OH E. NaHSO3. Choose the correct options from the given below: (1) B and C (2) A and D (3) B and E (4) E and D

Accepted Answer

Correct Answer: c — B and EStep-by-step Solution:Glucose is an aldohexose that exists predominantly in cyclic hemiacetal form. It shows reactions characteristic of aldehydes but with some limitations:Tollen's reagent (A): Glucose gives a positive test (silver mirror) because it has a free aldehyde group in the open-chain form. So it reacts.Schiff's reagent (B): This test is specific for aldehydes, but glucose does not give a positive Schiff's test because the aldehyde group is not sufficiently free in the cyclic form. Hence, no reaction.HCN (C): Glucose reacts with HCN to form cyanohydrin (addition reaction). So it reacts.NH₂OH (D): Glucose reacts with hydroxylamine to form an oxime. So it reacts.NaHSO₃ (E): Aldehydes typically form bisulfite addition products, but glucose does not give this reaction because the aldehyde group is sterically hindered and involved in ring formation. Hence, no reaction.Thus, glucose does not react with Schiff's reagent (B) and NaHSO₃ (E). Therefore, the correct answer is B and E (option c).Key Concepts: Reactions of glucose: Tollens', Fehling's, HCN, NH₂OH, Schiff's test, bisulfite addition, cyclic hemiacetal structure, reactivity of aldehydes in monosaccharides.

The reagents with which glucose does not react to give the corresponding tests/products are: A. Tollen's reagent B. Schiff's reagent C. HCN D. NH2OH E. NaHSO3. Choose the correct options from the given below: (1) B and C (2) A and D (3) B and E (4) E and D

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The reagents with which glucose does not react to give the corresponding tests/products are: A. Tollen's reagent B. Schiff's reagent C. HCN D. NH2OH E. NaHSO3. Choose the correct options from the given below: (1) B and C (2) A and D (3) B and E (4) E and D

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