JEE Main · ChemistryMedium
Which of the following statements is correct regarding the structure of ?
- A.It exists in two cyclic forms, and , which are anomers.
- B.It contains a ketone group at the position.
- C.It is a ketohexose.
- D.The open chain form contains a carboxylic acid group.
Show correct answer & step-by-step solution
Correct answer: A — It exists in two cyclic forms, and , which are anomers.
Solution
- is an aldohexose containing an aldehyde group at .
- The hydroxyl group at attacks the aldehyde to form a cyclic hemiacetal.
- This creates a new chiral center at , resulting in and anomers.
- Hence the answer is (A).
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