Question

Match List - I with List - II. 
         List - I (Saccharides)     List - II (Glycosidic linkages found) 
         (A) Sucrose                     (I) \( \alpha 1 - 4 \)
         (B) Maltose                    (II) \( \alpha 1 - 4 \) and \( \alpha 1 - 6 \)
         (C) Lactose                     (III) \( \alpha 1 - \beta 2 \)
         (D) Amylopectin            (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).