JEE Main 2026 Chemistry question
Identify the correct statements. A. Glucose exists in two anomeric forms. B. Anomers of glucose differ in configuration at C−1 in cyclic hemiacetal structure. C. Melting point of α-anomer of glucose is greater than β-anomer. D. Specific rotation of α-anomer is +19° while for β-anomer is +112°. E. α and β-anomers of glucose are prepared by crystallization of saturated glucose solution at 303 K and 371 K respectively.
Answer: (D)
Solution
A and B are standard facts. C is false (β-anomer actually has the higher melting point). D has the specific rotations
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