CBSE Class 11 Chemistry Syllabus 2026-27 PDF (Revised Chapters + Deleted topics)

The Central Board of Secondary Education has yet not released any information about the release of new Class 11 Chemistry syllabus for the 2026-27 academic session. Stay on the lookout on this page for all latest updated.

In this blog, we have everything so far known related to CBSE Class 11 Chemistry syllabus.

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CBSE Chemistry Class 11 Syllabus 2026-27 Overview

Ever wondered why water is called the universal solvent? Or why carbon forms millions of compounds while other elements don’t? If you’re stepping into Class 11 Chemistry, get ready to explore the answers to these fascinating questions!

Class 11 Chemistry syllabus marks the beginning of a deeper exploration into the structure of matter, chemical reactions, and fundamental scientific principles. The subject builds a strong conceptual base for higher studies and competitive examinations.

Key Highlights 2026-27

The syllabus is structured to balance theoretical understanding with practical application for overall conceptual clarity.

• Total Units: 9
• Total Marks: 100
• Theory: 70 Marks
• Practical: 30 Marks
• Volumetric Analysis (08) + Salt Analysis (08) + Content-based Experiment (06) + Project Work (04) + Class record and Viva (04)
• Competency-based question paper design included
• Bloom’s Taxonomy-based distribution as per class 12 syllabus (40% Easy, 30% Medium, 30% Hard)

Class 11 Chemistry Question Paper Design

The CBSE Chemistry question paper for Class 11 (2026-27) is designed to test not only your theoretical knowledge but also your ability to apply concepts in real-life situations.

The paper will include a mix of objective questions, short-answer questions, and long-answer questions, covering both conceptual and numerical aspects of Chemistry.

CBSE Class 11 Chemistry Exam Pattern 2026-27

Here’s a breakdown of how your Chemistry question paper will be structured:

• Type of Questions – The paper will include multiple-choice questions (MCQs), very short-answer (VSA), short-answer (SA), and long-answer (LA) questions.
• Marks Distribution – The total marks will be 70, with different weightage for theoretical and application-based questions. The remaining 30 marks will be for practical exams.
• Chapter-Wise Weightage – Important topics like Atomic Structure, Chemical Bonding, Thermodynamics, and Equilibrium will carry higher weightage.
• Higher Order Thinking Skills (HOTS) Questions – Some questions will test your analytical skills and understanding rather than just memorisation.

CBSE Class 11 Chemistry Assessment Format 2026-27

The CBSE Class 11 Chemistry assessment for 2026-27 outlines the mark allocation for each unit, ensuring a balanced approach between theoretical and application-based questions. This helps students know which topics require more attention and practice.

To see how these concepts are tested in exams, you can also explore our Class 11 Important Questions which include solved VSA and LA type questions.

Chemistry Class 11 Detailed Syllabus

The detailed syllabus outlined below provides a comprehensive overview of all the units and chapters included in the Class 11 Chemistry curriculum for the academic session. 

Unit 1: Some Basic Concepts of Chemistry

General Introduction: Importance and scope of Chemistry, Nature of matter, laws of chemical combination, Dalton's atomic theory: concept of elements, atoms and molecules, atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry and calculations based on stoichiometry.

Unit 2: Structure of Atom

Discovery of Electron, Proton and Neutron, atomic number, isotopes and isobars. Thomson's model and its limitations. Rutherford's model and its limitations, Bohr's model and its limitations, concept of shells and subshells, dual nature of matter and light, de Broglie's relationship, Heisenberg uncertainty principle, concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals - Aufbau principle, Pauli's exclusion principle and Hund's rule, electronic configuration of atoms, stability of half-filled and completely filled orbitals. Our NCERT Exemplar Class 11 Chemistry solutions provide a detailed breakdown of these complex atomic models.

Unit 3: Classification of Elements and Periodicity in Properties

Significance of classification, brief history of the development of periodic table, modern periodic law and the present form of periodic table, periodic trends in properties of elements -atomic radii, ionic radii, inert gas radii, Ionization enthalpy, electron gain enthalpy, electronegativity, valiancy, Nomenclature of elements with atomic number greater than 100.

Unit 4: Chemical Bonding and Molecular Structure

Valence electrons, ionic bond, covalent bond, bond parameters, Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, concept of hybridization, involving s, p and d orbitals and shapes of some simple molecules, molecular orbital theory of homonuclear diatomic molecules (qualitative idea only), Hydrogen bond.

Unit 5: Chemical Thermodynamics

Concepts of System and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions. First law of thermodynamics -internal energy and enthalpy, heat capacity and specific heat, measurement of ∆U and ∆H, Hess's law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution and dilution. Second law of Thermodynamics (brief introduction), Introduction of entropy as a state function, Gibb's energy change for spontaneous and non- spontaneous processes, criteria for equilibrium, Third law of thermodynamics (brief introduction).

You can supplement your revision by downloading the Class 11 Chemistry Practice Papers to test your speed and accuracy in solving thermodynamics problems.

Unit 6: Equilibrium

Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium – Le Chatelier's principle, ionic equilibrium- ionization of acids and bases, strong and weak electrolytes, degree of ionization, ionization of poly basic acids, acid strength, concept of pH, hydrolysis of salts (elementary idea), buffer solution, Henderson Equation, solubility product, common ion effect (with illustrative examples).

Unit 7: Redox Reactions

Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, in terms of loss and gain of electrons and change in oxidation number, applications of redox reactions.

Unit 8: Organic Chemistry – Some Basic Principles and Techniques

General introduction, methods of purification, qualitative and quantitative analysis, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electrometric effect, resonance and hyper conjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

Since Organic Chemistry is highly scoring, we recommend cross-referencing these notes with the Class 11 Chemistry Previous Year Question Papers to understand the frequency of specific naming reactions and mechanisms.

Unit 9: Hydrocarbons

Aliphatic Hydrocarbons, 

Alkanes - Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions including free radical mechanism of halogenation, combustion and pyrolysis.

Alkenes - Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation, chemical reactions: addition of hydrogen, halogen, water, hydrogen halides (Markovnikov's addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition.

Alkynes - Nomenclature, structure of triple bond (ethyne), physical properties, methods of preparation, chemical reactions: acidic character of alkynes, addition reaction of - hydrogen, halogens, hydrogen halides and water.

Aromatic Hydrocarbons

Introduction, IUPAC nomenclature, benzene: resonance, aromaticity, chemical properties: mechanism of electrophilic substitution. Nitration, sulphonation, halogenation, Friedel Craft's alkylation and acylation, directive influence of functional group in mono substituted benzene, carcinogenicity and toxicity

Note: The following topics are included in the syllabus but will be assessed only formatively to reinforce understanding without adding to summative assessments. This reduces academic stress while ensuring meaningful learning. Schools can integrate these with existing chapters as they align well. Relevant NCERT textual material is enclosed for reference.

1. s & p Block Elements

Electronic configuration, atomic & Ionic radii, Ionization Enthalpy, Hydration Enthalpy and general trends in physical and chemical properties of s and p block elements across the periods and down the groups; unique behavior of the first element in each group.

2. The Gaseous State

Qualitative treatment of Gas laws, Ideal gas equation and deviations from it.

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Micro-chemical methods are available for several of the practical experiments, wherever possible such techniques should be used.

A. Basic Laboratory Techniques

1. Cutting glass tube and glass rod
2. Bending a glass tube
3. Drawing out a glass jet
4. Boring a cork

B. Characterization and Purification of Chemical Substances

1. Determination of melting point of an organic compound.
2. Determination of boiling point of an organic compound.
3. Crystallization of impure samples of any one of the following: Alum, Copper Sulphate, Benzoic Acid.

C. Experiments based on pH

1. Any one of the following experiments:

• Determination of pH of some solutions obtained from fruit juices, solution of known and varied concentrations of acids, bases and salts using pH paper or universal indicators.
• Comparing the pH of solutions of strong and weak acids of same concentration.
• Study the pH change in the titration of a strong base using a universal indicator.

2. Study the pH change by common-ion in case of weak acids and weak bases.

D. Chemical Equilibrium

One of the following experiments:

1. Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either of the ions.
2. Study the shift in equilibrium between [Co(H2O)6]²⁺ and chloride ions by changing the concentration of either of the ions.

E. Quantitative Estimation

1. Using a mechanical balance/electronic balance.
2. Preparation of standard solution of Oxalic acid.
3. Determination of strength of a given solution of Sodium hydroxide by titrating it against standard solution of Oxalic acid.
4. Preparation of standard solution of Sodium carbonate.
5. Determination of strength of a given solution of hydrochloric acid by titrating it against standard Sodium Carbonate solution.

F. Qualitative Analysis

1. Determination of one anion and one cation in a given salt
   Cations - Pb²⁺, Cu²⁺, As³⁺, Al³⁺, Fe³⁺, Mn²⁺, Nⁱ²⁺, Zn²⁺, Co²⁺, Ca²⁺, S^r2+, Ba²⁺, Mg²⁺, NH₄⁺
   Anions - (CO₃)^2-, S^2-, NO₃^-, (SO₃)^2-, (SO2-)4, Cl-, Br^-, I^-, (SO4)3-, CH3COO-
   NOTE: Insoluble salts excluded.
2. Detection of - Nitrogen, Sulphur, Chlorine in organic compounds.

PROJECTS

Scientific investigations involving laboratory testing and collecting information from other sources.
A few suggested Projects

• Checking the bacterial contamination in drinking water by testing sulphide ion
• Study of the methods of purification of water
• Testing the hardness, presence of Iron, Fluoride, Chloride, etc., depending upon the regional variation in drinking water and study of causes of presence of these ions above permissible limit (if any).
• Investigation of the foaming capacity of different washing soaps and the effect of addition of Sodium carbonate on it
• Study the acidity of different samples of tea leaves.
• Determination of the rate of evaporation of different liquids
• Study the effect of acids and bases on the tensile strength of fibres.
• Study of acidity of fruit and vegetable juices.

NOTE: Any other investigatory project, which involves about 10 periods of work, can be chosen with the approval of the teacher.

How to Prepare Using CBSE Chemistry Class 11 Syllabus 2026-27

Chemistry in Class 11 can feel overwhelming, but if you follow the CBSE syllabus strategically, you can make your preparation easier and more effective. Instead of studying randomly, using the official syllabus as a guide helps you focus on important topics, exam patterns, and weightage.

Here’s a step-by-step plan to prepare smartly using the CBSE Class 11 Chemistry syllabus for 2026-27.

1. Start by Understanding the Syllabus Thoroughly

Before you begin studying, go through the latest CBSE Chemistry syllabus carefully. Pay attention to:

• The list of topics under Physical, Organic, and Inorganic Chemistry
• The weightage of each unit (some topics carry more marks than others)
• The marks distribution for theory and practical exams

Knowing this will help you prioritise high-scoring topics and avoid wasting time on less relevant areas.

2. Create a Study Plan Based on the Syllabus

Once you know what to study, create a realistic study timetable.

• Allocate more time to difficult and high-weightage topics, such as Atomic Structure, Chemical Bonding, and Thermodynamics
• Divide your study sessions between theory, numerical problems, and practical concepts
• Set weekly and monthly goals to ensure you complete the syllabus on time

3. Use NCERT as Your Primary Study Resource

The CBSE Class 11 Chemistry syllabus is based on NCERT textbooks, and most exam questions come directly from them.

• Read each chapter carefully and underline important concepts
• Practice in-text questions and end-of-chapter exercises
• Make short notes of important formulas, reactions, and definitions

4. Solve Previous Year Papers & Sample Papers

CBSE follows a set question paper pattern. Practicing previous years’ papers will help you:

• Get familiar with the types of questions asked
• Improve speed and accuracy for the exam
• Identify important topics frequently repeated in exams

You can also solve CBSE sample papers to test your preparation level.

5. Focus on Practicals Alongside Theory

Practical experiments form an important part of the Class 11 Chemistry syllabus.

• Read the practical syllabus carefully and understand the experiments and procedures
• Maintain a proper lab record, as it contributes to your final marks
• Revise practical-based questions, as they can be asked in theory exams too

6. Revise Regularly to Retain Concepts

• Revise at least once a week to strengthen your understanding
• Create flashcards for formulas and reactions for quick recall
• Discuss concepts with friends or teach someone else—this helps in long-term retention

Preparing for CBSE Class 11 Chemistry becomes much easier when you use the syllabus as your guide. A structured approach with NCERT books, previous year papers, regular revision, and practical knowledge will help you score high marks.

FAQs 

Q1. Why is Class 11 Chemistry considered difficult?

Ans. Class 11 Chemistry introduces entirely new concepts like atomic structure and thermodynamics. Once the basics are clear, the subject becomes logical and scoring.

Q2. Is NCERT enough to score well in Class 11 Chemistry?

Ans. Yes, NCERT is the backbone of preparation. Most school exams and competitive basics are directly aligned with NCERT concepts.

Q3. Which unit is the most important in Class 11 Chemistry?

Ans. Organic Chemistry and Chemical Bonding are crucial as they build the base for Class 12 and competitive exams like NEET and JEE.

Q4. How much time should I give daily to Chemistry?

Ans. Ideally, 1–1.5 hours daily with concept revision and numerical practice is enough to stay consistent and confident.

Q5. Are numericals important in Class 11 Chemistry?

Ans. Absolutely! Topics like mole concept and thermodynamics heavily rely on numericals, and regular practice boosts accuracy.

Q6. Is practical work important for final results?

Ans. Yes, practical exams carry significant weightage and test your real understanding beyond theory.

Q7. Does Class 11 Chemistry help in competitive exams?

Ans. Very much. It forms the foundation for NEET, JEE, CUET, and other science entrance exams.

Q8. How can I make Organic Chemistry easier?

Ans. Focus on understanding reaction mechanisms instead of memorising. Practice conversions and revise functional groups regularly.

Q9. Are competency-based questions included in Chemistry exams?

Ans. Yes, modern exam patterns focus more on application and analysis rather than direct theory-based questions.

Q10. What is the best revision strategy for Chemistry?

Ans. Short notes, formula sheets, and weekly revision cycles help retain reactions and key concepts effectively.

Q11. How many chapters are in Chemistry 11 syllabus?

Ans. 9 chapters in total. Some Basic Concepts of Chemistry, Structure of Atom, Classification of Elements and Periodicity in Properties, Chemical Bonding and Molecular Structure, Chemical Thermodynamics, Equilibrium, Redox Reactions, Organic Chemistry, and Hydrocarbons.

Q12. How to get 90+ marks in Class 11 Chemistry?

Ans. Master NCERT basics, prioritize high-weightage chapters, practice Physical Chemistry numericals and Organic reaction daily. Use mind maps/ flashcards, consistently revise Inorganic concepts, and solve numerous Previous Year Questions (PYQs) and sample papers to understand exam patterns and improve time management for top scores.