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Question: Answered & Verified by Expert
What are the functional groups present in the structure of maltose?
ChemistryBiomoleculesJEE MainJEE Main 2020 (04 Sep Shift 1)
Options:
  • A One ketal and one hemiketal
  • B Two acetals
  • C One acetal and one hemiacetal
  • D One acetal and one ketal
Solution:
2734 Upvotes Verified Answer
The correct answer is: One acetal and one hemiacetal

Cyclic hemiacetal are formed when an alcohol oxygen atom adds to the carbonyl carbon of an aldehyde or a ketone. Molecules (aldehyde or ketone), which contain both an alcohol and a carbonyl group, can instead undergo an intramolecular reaction to form a cyclic hemiacetal/ hemiketal.

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