Question

Match List - I with List - II. \[ {List - I (Saccharides)} \quad {List - II (Glycosidic-linkages found)} \] \[ {(A) Sucrose} \quad {(I) } \alpha 1-4 \] \[ {(B) Maltose} \quad {(II) } \alpha 1-4 { and } \alpha 1-6 \] \[ {(C) Lactose} \quad {(III) } \alpha 1-\beta 2 \] \[ {(D) Amylopectin} \quad {(IV) } \beta 1-4 \] Choose the correct answer from the options given below:

• A. (A)-(II), (B)-(IV), (C)-(III), (D)-(I)
• B. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• C. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
• D. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)

Hint:

Glycosidic linkages play a critical role in determining the structure and properties of saccharides. Make sure to recall the types of linkages when identifying saccharides.

Answer 1

The Correct Option is B

• Sucrose consists of glucose and fructose linked by an \( \alpha 1-4 \) glycosidic bond, so it matches with (I).
• Maltose has two glucose units connected by an \( \alpha 1-4 \) bond, and it also has the possibility of forming a linkage with \( \alpha 1-6 \), which matches with (II).
• Lactose is a disaccharide formed from one molecule of glucose and one of galactose, with an \( \alpha 1-\beta 2 \) glycosidic bond, so it matches with (III).
• Amylopectin is a highly branched polymer of glucose with \( \beta 1-4 \) linkages in its chains, so it matches with (IV).

Thus, the correct matching is (A)-(I), (B)-(II), (C)-(III), (D)-(IV).