In $\mathrm{D}$ - glucose $(\mathrm{X})$ and $\mathrm{D}$ - Fructose $(\mathrm{Y})$, which hydroxyl group…

In $\mathrm{D}$ - glucose $(\mathrm{X})$ and $\mathrm{D}$ - Fructose $(\mathrm{Y})$, which hydroxyl group participates in hemiacetal formation
  1. $\mathrm{C}-5$ in both $\mathrm{X}$ and $\mathrm{Y}$
  2. $\mathrm{C}-5$ in $\mathrm{X}$ and $\mathrm{C}-6$ in $\mathrm{Y}$
  3. $C-6$ in $X$ and $C-5$ in $Y$
  4. $\mathrm{C}-4$ in both $\mathrm{X}$ and $\mathrm{Y}$

Solution

In both, glucose and fructose, C-5 atom participates in hemiacetal formation.

Asked in: AP EAMCET 2023 (18 May Shift 1)

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