JEE Main Biomolecules Practice Questions With Solutions

Updated By Diksha Sharma on 07 Jan, 2025 21:16

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JEE Main Chemistry Biomolecules Practice Questions

Mathematics Physics

Question 1.

The incorrect statement about Glucose is :

Glucose remains in multiple isomeric form in its aqueous solution

Glucose is soluble in water because of having aldehyde functional group

Glucose is an aldohexose

Glucose is one of the monomer unit in sucrose

Question 2.

The $F^{-}$ ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the surface of teeth) into much harder fluoroapatite having the formula.

[3 ({Ca}_{3} {({PO}_{4})}_{2}) \cdot {CaF}_{2}]

[3 ({Ca}_{3} {({PO}_{4})}_{2}) \cdot Ca (OH)_{2}]

[3 ({Ca}_{3} {({PO}_{4})}_{3}) \cdot {CaF}_{2}]

[3 ({Ca}_{2} {({PO}_{4})}_{2}) \cdot Ca (OH)_{2}]

Question 3.

JEE Main 2024 (Online) 8th April Morning Shift Chemistry - Biomolecules Question 5 English

The incorrect statement regarding the given structure is

can be oxidized to a dicarboxylic acid with

{Br}_{2}

water

despite the presence of

- CHO

does not give Schiff's test

will coexist in equilibrium with 2 other cyclic structure

has 4 asymmetric carbon atom

Question 4.

The incorrect statements regarding enzymes are :

(A) Enzymes are biocatalysts.

(B) Enzymes are non-specific and can catalyse different kinds of reactions.

(D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose.

Choose the correct answer from the option given below :

(B) and (D)

(A), (B) and (C)

(B) and (C)

(B), (C) and (D)

Question 5.

DNA molecule contains 4 bases whose structure are shown below. One of the structures is not correct, identify the incorrect base structure.

JEE Main 2024 (Online) 6th April Morning Shift Chemistry - Biomolecules Question 1 English Option 1

JEE Main 2024 (Online) 6th April Morning Shift Chemistry - Biomolecules Question 1 English Option 2

JEE Main 2024 (Online) 6th April Morning Shift Chemistry - Biomolecules Question 1 English Option 3

JEE Main 2024 (Online) 6th April Morning Shift Chemistry - Biomolecules Question 1 English Option 4

Question 6.

Coagulation of egg, on heating is because of :

Denaturation of protein occurs

Biological property of protein remains unchanged

Breaking of the peptide linkage in the primary structure of protein occurs

The secondary structure of protein remains unchanged

Question 7.

Which of the following gives a positive test with ninhydrin ?

Polyvinyl chloride

Cellulose

Egg albumin

Starch

Question 8.

Match List I with List II

	LIST I		LIST II
A.	$α$ - Glucose and $α$ - Galactose	I.	Functional isomers
B.	$α - Glucose and β - Glucose$	II.	Homologous
C.	$α - Glucose and α - Fructose$	III.	Anomers
D.	$α - Glucose and α - Ribose$	IV.	Epimers

Choose the correct answer from the options given below:

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

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

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

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

Question 9.

Which of the following is the correct structure of L-Glucose?

JEE Main 2024 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 8 English Option 1

JEE Main 2024 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 8 English Option 2

JEE Main 2024 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 8 English Option 3

JEE Main 2024 (Online) 4th April Morning Shift Chemistry - Biomolecules Question 8 English Option 4