Question

Five-membered ring structures of fructose are given below. Mark the incorrect statement.

• A. The five-membered ring structures are named as furanose structures
• B. The cyclic structures represent two anomers of fructose
• C. Five-membered ring structures are named as pyranose structures
• D. These are also called Haworth structures

Answer 1

Answer: (C)

Five-membered rings are named as furanose while six-membered rings are named as pyranose rings.