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Question: Answered & Verified by Expert
The freshly prepared solution of sugar undergo change in optical rotation, with time, is known as
ChemistryBiomoleculesNEET
Options:
  • A Inversion
  • B Specific rotation
  • C Rotatory motion
  • D Mutarotation
Solution:
1835 Upvotes Verified Answer
The correct answer is: Mutarotation
α-D-Glucose[α]=+112°(36%)      Equilibrium  mixture  [α]D=+52°(0.02%)     β-D-Glucose[α]D=+19°(64%)
Glucose has two forms α and β . When either of these two is dissolved in water and allowed to stand, it gets converted to an equilibrium mixture of α and β forms.

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