Biomolecules and Chemistry in Everyday Life 1 Question 15

17. Which of the following compounds will behave as a reducing sugar in an aqueous KOH solution? (2017 Main)

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Solution:

  1. Sugars that have an aldehyde, a ketone, a hemiacetal or a hemiketal group is able to reduce an oxidising agent. These sugars are classified as reducing sugars.

Hemiacetal can be easily reduced by oxidising agent such as Tollen’s reagent.