Question

Consider the following statements.
I. Pyran is a cyclic organic compound with one oxygen atom and five carbon atom.
II. The cyclic structure of glucose is correctly represented by Haworth structure.
III. Five membered cyclic structure of glucose is called pyranose structure.
Which of the following statement(s) is/are true?
Choose the correct option.

• A. I and III
• B. I and II
• C. Only III
• D. I, II and III

Answer 1

Answer: (B)

The six membered cyclic structure of glucose is called pyranose structure ( $\alpha$ or $\beta$ ), in analogy with pyran. Pyran is a cyclic organic compound with one oxygen atom and five carbon atoms in the ring. The cyclic structure of glucose is correctly represented by Haworth structure.