1
JEE Main 2023 (Online) 13th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
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JEE Main 2023 (Online) 13th April Morning Shift Chemistry - Biomolecules Question 26 English

The products formed in the above reaction are

A
Two optically active products
B
One optically active and one meso product
C
Two optically inactive products
D
One optically inactive and one meso product.
2
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
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L-isomer of tetrose $$\mathrm{X}\left(\mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{4}\right)$$ gives positive Schiff's test and has two chiral carbons. On acetylation, '$$\mathrm{X}$$' yields triacetate. '$$\mathrm{X}$$' also undergoes following reactions

JEE Main 2023 (Online) 11th April Morning Shift Chemistry - Biomolecules Question 23 English

'$$\mathrm{X}$$' is

A
JEE Main 2023 (Online) 11th April Morning Shift Chemistry - Biomolecules Question 23 English Option 1
B
JEE Main 2023 (Online) 11th April Morning Shift Chemistry - Biomolecules Question 23 English Option 2
C
JEE Main 2023 (Online) 11th April Morning Shift Chemistry - Biomolecules Question 23 English Option 3
D
JEE Main 2023 (Online) 11th April Morning Shift Chemistry - Biomolecules Question 23 English Option 4
3
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
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The one that does not stabilize 2$$^\circ$$ and 3$$^\circ$$ structures of proteins is

A
$$-$$O $$-$$O $$-$$linkage
B
$$-$$S $$-$$S $$-$$linkage
C
van der Waals forces
D
H-bonding
4
JEE Main 2023 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Match List I with List II

LIST I
Natural amino acid
LIST II
One letter code
A. Glutamic acid I. Q
B. Glutamine II. W
C. Tyrosine III. E
D. Tryptophan IV. Y

Choose the correct answer from the options given below:

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