JEE Main 2026 (Online) 6th April Morning Shift | Biomolecules Question 2 | Chemistry

1

JEE Main 2026 (Online) 6th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

$$ \text { Match the List-I with List-II } $$

List-I Deficiency Disease		List-I Vitamin
A.	Scurvy	I.	Pyridoxine
B.	Convulsions	II.	Vitamin A
C.	Cheilosis	III.	Ascorbic Acid
D.	Xerophthalmia	IV.	Riboflavin

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

2

JEE Main 2026 (Online) 6th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

$$ \text { Match the List-I with List-II } $$

$$ \begin{gathered} \text { List-I } \\ \text { Amino acid } \end{gathered} $$		List-II Positive reaction/Test for functional group present in side chain of amino acid
A.	Glutamine	I.	Hinsberg's test
B.	Lysine	II.	Neutral $\mathrm{FeCl}_3$ test
C.	Tyrosine	III.	Ceric ammonium nitrate test
D.	Serine	IV.	Hoffman bromamide degradation

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

3

JEE Main 2026 (Online) 5th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Identify the incorrect statement about tertiary structure of proteins.

A

They can be fibrous or globular in structure.

B

The main forces that stabilize the structure are hydrogen bonding, disulphide links, van der Waals and electrostatic forces of attraction.

C

The structure remains intact when exposed to pH changes.

D

A linear polypeptide chain will convert to a secondary structure and then further folding of the secondary structure will convert to tertiary structure.

4

JEE Main 2026 (Online) 5th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

$$ \text { Given below are two statements : } $$

$$ \text { Statement I : } $$ JEE Main 2026 (Online) 5th April Evening Shift Chemistry - Biomolecules Question 6 English 1 and are two anomers of D-(+)-glucode.

Statement II : The open chain forms of D-glucose and D- fructose contain three similar chiral carbons at $\mathrm{C}_3, \mathrm{C}_4$ and $\mathrm{C}_5$.

In the light of the above statements, choose the correct answer from the options given below :

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

JEE Main Subjects