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ChemistryJEE Main 28 Jan 2026, Shift 2·Q11·MCQ·Easy–moderate

Biomolecules · Reducing and non-reducing disaccharides

Structures of four disaccharides are given below. Among the given disaccharides, the non-reducing sugar is :
  1. (1)
  2. (2)
  3. (3)
  4. (4)
We corrected a printing error in the original paper

Option (1): source printed “OH” on the fructose ring carbon next to the ring oxygen (C-5), which makes that carbon a hemiacetal and leaves no non-reducing option; corrected in the figure to the intended “CH2_2OH” (sucrose, source key (1)); glyphs copied from the same drawing.

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See the full 28 Jan 2026, Shift 2 paper