Question

Given are the structures of cyclic D-glucoside.

Moles of $HCHO$ formed are:

• A. $1,1$
• B. $2,2$
• C. $1,2$
• D. $2,1$

Answer 1

The correct option is A $1,1$

$\bullet$ Both $X$ and $Y$ gives $1,1$ moles of $HCHO$ respectively.

$\bullet$ Cleavage of glycolic bond by ${HIO}_4$ :-

Converts alcohol $\to$ Carbonyl

Carbonyl $\to$ acid.