Chemistry - Biomolecules Question with Solution | TestHub

The phenomenon of mutarotation involves the change in specific rotation of anomers in solution until an equilibrium value is reached. For D-glucose, both $\alpha$-D-glucose (initial specific rotation $+112.2^{\circ }$) and $\beta$-D-glucose (initial specific rotation $+18.7^{\circ }$) mutarotate to an equilibrium specific rotation of $+52.7^{\circ }$. Therefore, statement D is incorrect as $\alpha$-D-glucose does not attain a constant specific rotation of $+112.2^{\circ }$ but rather mutarotates to $+52.7^{\circ }$.