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NEET2012ChemistryBiomoleculesActual

Which one of the following sets of monosaccharides forms sucrose?

Options

  1. A-D-galactopyranose and -D-glucopyranose
  2. B-D-glucopyranose and -D-fructofuranose
  3. C-D-glucopyranose and -D-fructofuranose
  4. D-D-glucopyranose and -D-fructopyranose

Correct answer

B. -D-glucopyranose and -D-fructofuranose

Step-by-step solution

Sucrose is composed of -D-glucopyranose and a -D-fructofuranose units which are joined by , -glycosidic linkage between C -1 of the glucose unit and C-2 of the fructose unit.

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