JEE Mains · Chemistry · STD 12 - 10. Biomolecules
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 \(\alpha\)-anomer of glucose is greater than \(\beta\)-anomer.
D. Specific rotation of \(\alpha\)-anomer is \(+19°\) while for \(\beta\)-anomer is \(+112°\)
E. \(\alpha\) and \(\beta\)-anomers of glucose are prepared by crystallization of saturated glucose solution at \(303\) K and \(371\) K respectively.
Choose the correct answer from the options given below:
- A A and B Only
- B B and C Only
- C A, B and D Only
- D A, B and E Only
Answer & Solution
Correct Answer
(D) A, B and E Only
Step-by-step Solution
Detailed explanation
Statement A is correct because glucose exists in two anomeric forms, \(\alpha\)-D-glucose and \(\beta\)-D-glucose. Statement B is correct because the two anomers differ only in the configuration of the hydroxyl group at C\(-1\), which is the anomeric carbon in the cyclic…
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