CBSE Class 12 Chemistry Biomolecules Worksheet Set D

Access the latest CBSE Class 12 Chemistry Biomolecules Worksheet Set D. We have provided free printable Class 12 Chemistry worksheets in PDF format, specifically designed for Unit 10 Biomolecules. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Unit 10 Biomolecules Chemistry Practice Worksheet for Class 12

Students should use these Class 12 Chemistry chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Unit 10 Biomolecules, to help you prepare for school tests and final examination. Regular practice of these Class 12 Chemistry questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 12 Chemistry Unit 10 Biomolecules Worksheet PDF

 

BIOMOLECULES
 
1 Glucose on oxidation with Br2(aq) gives
(a) Gluconic acid
(b) Tartaric acid
(c) Sachharic acid
(d) Meso-oxalic acid
 
2 In aqueous solution, an amino acid exist as
(a) cation
(b) anion
(c) zwitter ion
(d) neutral molecule
 
3 Which of the following is non-reducing sugar?
(a) Glucose
(b) Sucrose
(c) Maltose
(d) Lactose
 
4 α-helix structure of protein is stabilised by
(a) Peptide bonds
(b) van der Waals forces
(c) Hydrogen bonds
(d) Dipole-dipole interactions
 
5 Dinucleotide is obtained by joining two nucleotides together by phosphodiester linkage. Between which carbon atoms of pentose sugars of nucleotides are these linkages present?
(a) 5’and 3′
(b)1’and 5′
(c) 5′ and 5′
(d) 3′ and 3′
 
6 α-D (+) glucose and β-D (+) – glucose are
(a) Enantiomers
(b) Geometrical isomers
(c) Anomers
(d) Epimers
 
7 Kerating present in hair is an example of
(a) Fibrous protein
(b) Globular protein
(c) Conjugated protein
(d) Derived protein
 
8 DNA and RNA differ in
(a) Sugar
(b) Purines
(c) Pyrimidines
(d) Both (a) and (c)
 
9 Glucose is a __________
(a) monosaccharide
(b) disaccharide
(c) reducing sugar
(d) non-reducing sugar
 
10 Sugars are
A) Optically active polyhydroxy aldehydes
B Optically active polyhydroxy ketones
C) Optically active polyhydroxy aldehydes or ketones
D) Polyhydroxy aldehydes or ketones which may or may not be optically active
 
11 Which is monosaccharide
A)Glucose
B)Fructose
C) Galactose
D) All of these
 
12 Glucose contains
A) One -CHOgroup
B) Five-OH groups
C) One primary alcoholic group
D) Four secondary alcoholic groups
E) All are correct
 
13 Peptides are
A) Esters
B) Salts
C) Amides
D) Ketones
 
14 Isoelectric point is
A) Specific temperature
B) Suitable concentration of amino acid
C) Hydrogen ion concentration that does not allow migration of amino acid under electric field
D) Melting point of an amino acid under the influence of electric field
 
15 The base adenine occurs in
A)DNA only
B)RNA only
C)DNA and RNA both
D) Protein
 
16 Which one of the following rotates the plane polarized light towards left?
(a) D(+) Glucose
(b) L(+) Glucose
(c) D(-) Fructose
(d) D(+) Galactose
 
17 Fructose contains a ____functional group at carbon number____.
ketonic; 3
aldehydic; 2
ketonic; 2
aldehydic; 3
 
18 Glucose, on prolonged heating with HI, forms ____, suggesting that all the six carbon atoms are linked in a ____structure.
2-methylpentane, branched
n-hexane, straight
cyclohexane, cyclic
2-methylpentane, branched
 
19 Nucleotides are joined together by phosphodiester linkage between ____ and ____ carbon atoms of the pentose sugar.
5' and 3'
5' and 2'
5' and 5'
3' and 2'
 
20 _________ proteins are formed when polypeptide chains run parallel and are held together by ____and ____bonds.
Fibrous, hydrogen and disulphide
Globular, hydrogen and oxygen
Fibrous, hydrogen and nitrogen
Globular, hydrogen and disulphide
 
ASSERTION REASONING :
 
1 Assertion: D (+) – Glucose is dextrorotatory in nature.
   Reason: ‘D’ represents its dextrorotatory nature.
 
2 Assertion : Protein are made up of α- amino acids.
   Reason: During denaturation, secondary and tertiary structures of proteins are destroyed.
 
3 Assertion: All enzymes are made up of proteins and all proteins have three dimensional structures.
   Reason: Secondary structures of protein are sequence of amino acids.
 
4 Assertion: All α -amino acids except glycine contain at least one chiral carbon.
   Reason: Most naturally occurring amino acids have L-configuration.
 
5 Assertion: Deoxyribose is a carbohydrate.
   Reason: Carbohydrates are hydrates of carbon, compounds which follow formula of carbohydrates.
 
6 Assertion: Two strands in double helical structure of DNA are complementary to each other.
   Reason: Disulphide bonds are formed between specific pair of bases.
 
FILL IN THE BLANKS
 
1 Nucleic acids are the polymers of __________
 
2 Invert sugar is mixture of ________ and _______and is leavorotatory.
 
3 During denaturation of proteins, ______ and ______ structure are ruptured but _________structure remains the same
 
4 Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be __________
 
5 ________ is the linkage joining two amino acids.
 
6 C6H12O6 is the molecular formula of _______ and _______
 
7 A carbohydrate which cannot be hydrolysed to simple sugars are ________
 
8 Sugar present in DNA is_________________
 
9 Monosaccharide consisting of ketone as functional group is a __________
 
10 Insulin is an example of _______
 
11 ________proteins are insoluble in water.
 
12 A nucleotide consist of ______ ,______ and ________.
 
13 In D(+) glucose, -OH on the lowest asymmetric carbon is on the ___side, which is comparable to (+) glyceraldehyde
 
14 The two different crystalline forms of glucose are ____ and ____
 
15 Amino acids with equal number of amino and carboxyl groups are ____
 
16 Oxidation of glucose as well as Gluconic acid with nitric acid yields ____.
 
17 A native protein when subjected to a physical change, like change in ____, or a chemical change, like change in ____, the ____ bond is disturbed. It loses its biological activity called denaturation of protein.
 
18 The two cyclic hemiacetal forms of glucose differ only in the configuration of the hydroxyl group at C1, called ____ carbon
 
19 In aqueous solution, the carboxyl groups can ____ a proton and amino group can ____a proton, giving rise to a dipolar ion known as ____.
 
20 Keratin present in hair is a ____protein whereas insulin is an example of _____protein.

 

Please click on below link to download CBSE Class 12 Chemistry Biomolecules Worksheet Set B

Unit 02 Electrochemistry
CBSE Class 12 Chemistry Electrochemistry Question Bank
CBSE Class 12 Chemistry Electrochemistry Question Bank Set A
CBSE Class 12 Chemistry Electrochemistry Question Bank Set B
CBSE Class 12 Chemistry Electrochemistry Question Bank Set C
CBSE Class 12 Chemistry Electrochemistry Worksheet Set A
CBSE Class 12 Chemistry Electrochemistry Worksheet Set B
CBSE Class 12 Chemistry Electrochemistry Worksheet Set C
Unit 03 Chemical Kinetics
CBSE Class 12 Chemistry Chemical Kinetics Question Bank Set A
CBSE Class 12 Chemistry Chemical Kinetics Question Bank Set B
CBSE Class 12 Chemistry Chemical Kinetics Worksheet
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set A
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set B
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set C
CBSE Class 12 Chemistry Chemical Kinetics Worksheet Set D
Unit 04 The d- and f-Block Elements
CBSE Class 12 Chemistry All Chapters Solved Worksheet
CBSE Class 12 Chemistry D And F Block Elements Question Bank Set A
CBSE Class 12 Chemistry D And F Block Elements Question Bank Set B
CBSE Class 12 Chemistry D And F Block Elements Worksheet Set A
CBSE Class 12 Chemistry D And F Block Elements Worksheet Set B
CBSE Class 12 Chemistry D And F Block Elements Worksheet Set C
CBSE Class 12 Chemistry Organic Compounds Containing Nitrogen Worksheet
CBSE Class 12 Chemistry The D Block Elements Worksheet
CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set A
CBSE Class 12 Chemistry The d and f Block Elements Worksheet Set B
Unit 05 Coordination Compounds
CBSE Class 12 Chemistry Coordination Compounds Question Bank Set A
CBSE Class 12 Chemistry Coordination Compounds Question Bank Set B
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set A
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set B
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set C
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set D
CBSE Class 12 Chemistry Coordination Compounds Worksheet Set E
Unit 06 Haloalkanes and Haloarenes
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Question Bank Set A
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Question Bank Set B
CBSE Class 12 Chemistry Haloalkanes and Haloarenes Worksheet Set A
CBSE Class 12 Chemistry Haloalkanes and Haloarenes Worksheet Set B
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Worksheet Set C
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Worksheet Set D
CBSE Class 12 Chemistry Haloalkanes And Haloarenes Worksheet Set E
Unit 07 Alcohols, Phenols and Ethers
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Question Bank
CBSE Class 12 Chemistry Alcohols Phenols and Ethers Worksheet Set A
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set B
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set C
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set D
CBSE Class 12 Chemistry Alcohols Phenols And Ethers Worksheet Set E
Unit 08 Aldehydes, Ketones and Carboxylic Acids
CBSE Class 12 Chemistry Aldehydes Ketone and Carboxylic Acids Worksheet Set A
CBSE Class 12 Chemistry Aldehydes Ketone and Carboxylic Acids Worksheet Set B
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set A
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set B
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set C
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set D
CBSE Class 12 Chemistry Aldehydes Ketones And Carboxylic Acids Question Bank Set E
Unit 09 Amines
CBSE Class 12 Chemistry Amines Worksheet Set A
CBSE Class 12 Chemistry Amines Worksheet Set B
CBSE Class 12 Chemistry Amines Worksheet Set C
CBSE Class 12 Chemistry Amines Worksheet Set D
CBSE Class 12 Chemistry Amines Worksheet Set E
Unit 10 Biomolecules
CBSE Class 12 Chemistry Biomolecules Question Bank Set A
CBSE Class 12 Chemistry Biomolecules Question Bank Set B
CBSE Class 12 Chemistry Biomolecules Worksheet Set A
CBSE Class 12 Chemistry Biomolecules Worksheet Set B
CBSE Class 12 Chemistry Biomolecules Worksheet Set C
CBSE Class 12 Chemistry Biomolecules Worksheet Set D
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CBSE Class 12 Chemistry The Solid State Worksheet Set A
CBSE Class 12 Chemistry The Solid State Worksheet Set B

Important Practice Resources for Class 12 Chemistry

Unit 10 Biomolecules CBSE Class 12 Chemistry Worksheet

Students can use the Unit 10 Biomolecules practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Chemistry. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Unit 10 Biomolecules

Our expert team has used the official NCERT book for Class 12 Chemistry to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Chemistry. You can get all this study material for free on studiestoday.com.

Extra Practice for Chemistry

To get the best results in Class 12, students should try the Chemistry MCQ Test for this chapter. We have also provided printable assignments for Class 12 Chemistry on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

Where can I download the latest PDF for CBSE Class 12 Chemistry Biomolecules Worksheet Set D?

You can download the teacher-verified PDF for CBSE Class 12 Chemistry Biomolecules Worksheet Set D from StudiesToday.com. These practice sheets for Class 12 Chemistry are designed as per the latest CBSE academic session.

Are these Chemistry Class 12 worksheets based on the 2026 competency-based pattern?

Yes, our CBSE Class 12 Chemistry Biomolecules Worksheet Set D includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 12.

Do you provide solved answers for CBSE Class 12 Chemistry Biomolecules Worksheet Set D?

Yes, we have provided detailed solutions for CBSE Class 12 Chemistry Biomolecules Worksheet Set D to help Class 12 and follow the official CBSE marking scheme.

How does solving CBSE Class 12 Chemistry Biomolecules Worksheet Set D help in exam preparation?

Daily practice with these Chemistry worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 12 students get more marks in CBSE exams.

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All our Class 12 Chemistry practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 12 Chemistry Biomolecules Worksheet Set D without any registration.