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JEE Main levelSingle correct optionDifficulty 2 of 3bm023

In sucrose, the glycosidic linkage joins

AC-1 of alpha-D-glucose and C-4 of alpha-D-glucose
BC-1 of beta-D-galactose and C-4 of glucose
CC-1 of alpha-D-glucose and C-2 of beta-D-fructose
DC-1 of beta-D-glucose and C-6 of beta-D-fructose

Answer: C

Sucrose is alpha-D-glucopyranosyl-(1,2)-beta-D-fructofuranoside: C-1 of glucose is bonded through oxygen to C-2 (the anomeric carbon) of fructose.

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