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Which one of the following does not exhibit the phenomenon of mutarotation?

  1. A
    Fructose
  2. B
    Sucrose
  3. C
    Lactose
  4. D
    Maltose

Solution & Step-by-step Explanation

Mutarotation is shown by sugars that exist in an equilibrium between and cyclic forms. This requires a free hemiacetal or hemiketal group (reducing sugars).Sucrose is a non-reducing sugar because the anomeric carbons of both glucose and fructose are involved in the glycosidic linkage. Since it lacks a free hemiacetal/hemiketal group, it does not show mutarotation.

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Which one of the following does not exhibit the phenomenon of mutarotation?
A
Fructose
B
Sucrose
C
Lactose
D
Maltose

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