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What is the term used for the change observed in the optical rotation of a freshly prepared glucose solution?

1. Racemisation
2. Specific rotation
3. Mutarotation
4. Tautomerism

Correct answer: Mutarotation

Solution

A freshly prepared glucose solution slowly changes its optical rotation until equilibrium between the alpha and beta anomers is reached. This phenomenon is called mutarotation.

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