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1
JEE Main 2025 (Online) 2nd April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the correct statement among the following :

A
All naturally occurring amino acids except glycine contain one chiral centre.
B
Amino acid, cysteine can easily undergo dimerisation due to the presence of free SH group.
C
Glutamic acid is the only amino acid that contains a $-$COOH group at the side chain.
D
All naturally occurring amino acids are optically active.
2
JEE Main 2025 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the essential amino acids from below:

(A) Valine

(B) Proline

(C) Lysine

(D) Threonine

(E) Tyrosine

Choose the correct answer from the options given below:

A

(A), (C) and (D) only

B

(C), (D) and (E) only

C

(A), (C) and (E) only

D

(B), (C) and (E) only

3
JEE Main 2025 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

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

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

B

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

C

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

D

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

4
JEE Main 2025 (Online) 28th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List-I with List-II.

List - I (Saccharides) List - II (Glycosidic-linkages found)
(A) Sucrose (I) α 1 $-$ 4
(B) Maltose (II) α 1 $-$ 4 and α 1 $-$ 6
(C) Lactose (III) α 1 $-$ β 2
(D) Amylopectin (IV) β 1 $-$ 4

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

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