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10. Biomolecules — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry10. Biomolecules1 Mark
MCQ
Which one of the statements conceming the equilibriurn shown is true ?
  • A
    The two structures are enantiomers of each other. They have equal but opposite  optical rotations and recemize slowly at room temperature
  • B
    The two structures are enantiomers of each other. They racemize too rapidly at  roorn temperature for their optical rotations to be measured
  • ✓
    The two structures are diastereomers of each other. Their interconversion is called mutarotation
  • D
    The two structures are diastereomers of each other. Their interconversion does  not require breaking and making bonds, only a change in conformation
✓

Answer

Correct option: C.
The two structures are diastereomers of each other. Their interconversion is called mutarotation
c
$(c)\, \alpha -D-$ glucose $\overset{Mutarotation}{\longleftrightarrow}$  $\beta - D- $glucose

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