Question

If the number of $1^{\circ }$ and $2^{\circ }$ alcoholic groups in sucrose are $x$ and $y$, then the value of $y-x$ is:

Answer 1

As we can see from the image attached, sucrose contains 3 primary alcoholic groups and 5 secondary alcoholic groups. Hence, the value of $x$ is 3 and the value of $y$ is 5.

Hence, $y-x=5-3=2$