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CBSE Class 11 Chemistry Syllabus 2023-24 PDF Download

CBSE (Central Board of Secondary Education) will release the updated CBSE Class 11 Chemistry Syllabus 2023-24 for the board exam 2024. All important topics of the Class 11 Chemistry syllabus 2023-24 are explained in this article. We also provide a direct link to download the latest CBSE Class 11 Chemistry Syllabus 2023-24.

Applicants of Board Exam 2024 can download the Revised CBSE Class 11 Chemistry Syllabus 2023-24 through the official website of CBSE at or Use our direct link (given below) to download the Class 11 Revised Chemistry Syllabus for Academic Session 2023-24.

Important of CBSE Class 11 Chemistry Syllabus 2023-24

Higher Secondary is the most important stage of schooling as special discipline-based, content-oriented courses are introduced at this time. Students reach this level after 10 years of general education and opt for chemistry to pursue their career in vocational courses like basic science or medicine, engineering, technology, and study courses in practical areas of science and technology at the tertiary level. Therefore, there is a need to provide the learners with adequate conceptual background in Chemistry, which will enable them to face the challenges of academic and vocational courses after the senior secondary level.

The new and updated curriculum is based on a disciplinary approach with rigor and depth taking care that the curriculum is not overwhelming and at the same time it is internationally comparable. There has been a tremendous change in the knowledge related to the subject of chemistry during the last decade. Many new fields like synthetic materials, biomolecules, natural resources, and industrial chemistry are coming up in a big way and deserve to be an integral part of the chemistry curriculum at the senior secondary level.

CBSE Class 11 Chemistry Syllabus 2023-24 Course Structure

S.No.UnitNo. of PeriodsMarks
1Some Basic Concepts of Chemistry187
2Structure of Atom209
3Classification of Elements and Periodicity in Properties126
4Chemical Bonding and Molecular Structure207
5Chemical Thermodynamic239
7Redox Reactions94
8Organic Chemistry: Some Basic Principles and Techniques2011

CBSE Class 11th Chemistry Syllabus 2023-24 in Details

Unit I: Some Basic Concepts of Chemistry

General Introduction: Importance and scope of Chemistry. Nature of matter, laws of chemical combination, Dalton’s atomic theory: the 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 II: Structure of Atom

Discovery of Electron, Proton, Neutron, atomic number, isotopes, and isobars. Thomson’s model and its limitations. Rutherford’s model and its limitations, Bohr’s model and its limitations, the concept of shells and subshells, the dual nature of matter and light, de Broglie’s relationship, Heisenberg uncertainty principle, the 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 filled orbitals.

Unit III: Classification of Elements and Periodicity in Properties

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

Unit IV: Chemical Bonding and Molecular Structure

Valence electrons, ionic bond, covalent bond, bond parameters, Lewis’s structure, the polar character of covalent bond, the covalent character of ionic bond, valence bond theory, resonance, the geometry of covalent molecules, VSEPR theory, the 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 V: Chemical Thermodynamic

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

Unit VI: Equilibrium

Equilibrium in physical and chemical processes, dynamic nature of equilibrium, the 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 polybasic acids, acid strength, the concept of pH, hydrolysis of salts (elementary idea), buffer solution, Henderson Equation, solubility product, common ion effect (with illustrative examples).

Unit VII: 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 VIII: 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, electromeric effect, resonance, and hyperconjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

Unit IX: Hydrocarbons

Classification of Hydrocarbons
Aliphatic Hydrocarbons: Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions including free radical mechanism of halogenation, combustion and

Alkenes – Nomenclature, the 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, the 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 the functional group in monosubstituted benzene. Carcinogenicity and toxicity.

CBSE Class 12 Chemistry Practical (3 hours/ 30 Marks)

Evaluation Scheme for ExaminationMarks
Volumetric Analysis08
Salt Analysis08
Content-Based Experiment06
Project Work04
Class record and viva04

Prescribed Books for CBSE Class 11 Chemistry Board Exam 2024

  1. Chemistry Part – I, Class-XI, Published by NCERT.
  2. Chemistry Part – II, Class-XI, Published by NCERT.
  3. Laboratory Manual of Chemistry, Class XI Published by NCERT
  4. Other related books and manuals of NCERT including multimedia and online sources

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My Name is Mukesh Kumar. I am a Teacher, Blogger, Educational Content Writer, and Founder of CBSE Digital Education.

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