1
JEE Main 2023 (Online) 13th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
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The naturally occurring amino acid that contains only one basic functional group in its chemical structure is

A
asparagine
B
arginine
C
histidine
D
lysine
2
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.
3
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
4
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

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
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