JEE Main · ChemistryHard
Which of the following statements regarding the structure and reactivity of is correct?
- A.It reacts with to form an oxime but does not form a adduct.
- B.The and are anomers that differ in configuration at the carbon.
- C.It undergoes mutarotation in aqueous solution due to the presence of a free ketone group.
- D.The open chain form of glucose contains five chiral centers.
Show correct answer & step-by-step solution
Correct answer: B — The and are anomers that differ in configuration at the carbon.
Solution
- Glucose exists in equilibrium between open-chain and cyclic hemiacetal forms.
- The cyclic forms are formed by the reaction of the aldehyde with the hydroxyl group.
- The carbon becomes a new chiral center, creating two diastereomers known as anomers.
- Hence the answer is (B).
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