Question

The difference between alpha and beta forms of pyranose ring is that

• A. The oxygen atoms are more in alpha form
• B. They are mirror images of each other
• C. In the β form, the OH group in the 1 position (the far right) is down, and, in the α form, the OH group in the 1 position (the far right) is up.
• D. In the α form, the OH group in the 1 position (the far right) is down, and, in the β form, the OH group in the 1 position (the far right) is up.

Answer 1

The correct option is D

In the α form, the OH group in the 1 position (the far right) is down, and, in the β form, the OH group in the 1 position (the far right) is up.