BiomoleculesMedium
Question
The reagents with which glucose does not react to give the corresponding tests/products are
A. Tollens’ reagent
B. Schiff's reagent
C. HCN
D. ${NH}_{2}OH$
E. ${NaHSO}_{3}$
Choose the correct options from the given below:
Options
A.B and E
B.E and D
C.B and C
D.A and D
Solution
Sol. [Key Concept: Reactions and cyclic structure of glucose]
In the NCERT description, glucose does not give Schiff’s test and does not form the usual NaHSO₃ addition product. Thus B and E are the required choices, option (1). Glucose exists mainly as cyclic hemiacetals in equilibrium with a small open chain fraction; it can reduce Tollens’ reagent and can form a cyanohydrin with HCN and an oxime with NH₂OH.
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