What is the glycosidic linkage in maltose?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → α-1,4-glycosidic linkage
Maltose is made of two α-D-glucose units. C1 of one unit is joined through an oxygen atom to C4 of the other, so the linkage is an α-1,4-glycosidic linkage.
NCERT (2026-27 edition):
10.1.3 Disaccharides – “(ii) Maltose: Another disaccharide, maltose is composed of two α-D-glucose units in which C1 of one glucose (I) is linked to C4 of another glucose unit (II). The free aldehyde group can be produced at C1 of second glucose in solution and it shows reducing properties so it is a reducing sugar.”