JEE MAIN - Chemistry (2025 - 29th January Morning Shift - No. 3)

Match List - I with List - II.

List - I (Carbohydrate)	List - II (Linkage Source)
(A) Amylose	(I) $\beta$ - $C_1 - C_4$, plant
(B) Cellulose	(II) $\alpha$ - $C_1 - C_4$, animal
(C) Glycogen	(III) $\alpha$ - $C_1 - C_4$, $\alpha$ - $C_1 - C_6$, plant
(D) Amylopectin	(IV) $\alpha$ - $C_1 - C_4$, plant

Choose the correct answer from the options given below :

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

(A)-(III), (B)-(III), (C)-(I), (D)-(IV)

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

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

Explanation

In carbohydrates, different types of polysaccharides are characterized by specific types of glycosidic linkages:

Amylose is a linear polymer made up of $\alpha$-D-glucose units linked by $\alpha$-$C_1$-$C_4$ glycosidic bonds primarily found in plants.

Cellulose is a structural component of plant cell walls composed of $\beta$-D-glucose units linked by $\beta$-$C_1$-$C_4$ glycosidic bonds.

Glycogen is a highly branched storage polysaccharide in animals, consisting of $\alpha$-$C_1$-$C_4$ and $\alpha$-$C_1$-$C_6$ glycosidic linkages.

Amylopectin is a branched form of starch found in plants, containing $\alpha$-$C_1$-$C_4$ glycosidic bonds primarily, with some branching via $\alpha$-$C_1$-$C_6$ linkages.

Matching List-I with List-II:

(A) Amylose - (IV) $\alpha$ - $C_1 - C_4$, plant

(B) Cellulose - (I) $\beta$ - $C_1 - C_4$, plant

(D) Amylopectin - (III) $\alpha$ - $C_1 - C_4$, $\alpha$ - $C_1 - C_6$, plant

The correct option is:

Option D:

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

JEE MAIN - Chemistry (2025 - 29th January Morning Shift - No. 3)

Explanation

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