The CBSE Class 11 Chemistry syllabus covers a wide range of topics aimed at introducing students to the fundamental concepts of chemistry. The Syllabus comprises of three units: Physical chemistry, Inorganic Chemistry, and Organic Chemistry. Chemistry Syllabus provides information on CBSE Chemistry topics, and sub-topics along with the marks distribution of all chapters. CBSE Syllabus for Class 11 Chemistry for the academic year 2025-26 is provided here. It covers all the important topics and subtopics of CBSE Chemistry along with the marking scheme and time duration. overall, the CBSE class 11 chemistry syllabus is designed to give students a strong foundation and prepare them for further studies in the subject.
Check out – CBSE Class 11 Syllabus
CBSE Class 11 Chemistry Syllabus 2025-26
The table below shows the CBSE Chemistry unit name, marks distribution, and time allocated to complete each unit of the CBSE 11 Chemistry Syllabus.
| Unit No. | Name of Unit | No. of Periods | Marks |
|---|---|---|---|
| 1 | Some Basic Concepts of Chemistry | 12 | 7 |
| 2 | Structure of Atom | 14 | 9 |
| 3 | Classification of Elements and Periodicity in Properties | 8 | 6 |
| 4 | Chemical Bonding and Molecular Structure | 14 | 7 |
| 5 | Chemical Thermodynamics | 16 | 9 |
| 6 | Equilibrium | 14 | 7 |
| 7 | Redox Reactions | 6 | 4 |
| 8 | Organic Chemistry: Some basic Principles and Techniques | 14 | 11 |
| 9 | Hydrocarbons | 12 | 10 |
| TOTAL | 70 |
Trending: Deleted Syllabus of Class 11 From NCERT Textbooks
Recommended: Deleted Syllabus of Class 11 Chemistry
Unit I: Some Basic Concepts of Chemistry – 12 Periods
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 II: Structure of Atom – 14 Periods
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.
Unit III: Classification of Elements and Periodicity in Properties – 08 Periods
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, valency. Nomenclature of elements with atomic number greater than 100.
Unit IV: Chemical Bonding and Molecular Structure – 14 Periods
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 VI: Chemical Thermodynamics – 16 Periods
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 nonspontaneous processes, criteria for equilibrium.
Third law of thermodynamics (brief introduction).
Unit VII: Equilibrium – 14 Periods
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 VIII: Redox Reactions – 06 Periods
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 XII: Organic Chemistry -Some Basic Principles and Techniques – 14 Periods
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 hyper conjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.
Unit XIII: Hydrocarbons – 12 Periods
Classification of 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 monosubstituted benzene. Carcinogenicity and toxicity.
CBSE Class 11 Chemistry Practical Syllabus
CBSE Chemistry Practicals for class 11 is of 30 marks. It will be conducted under the supervision of subject teacher. This contribute to the overall practical marks for the subject.
The table below shows the evaluation scheme of practical exams.
| Evaluation Scheme for Examination | Marks |
|---|---|
| Volumetric Analysis | 8 |
| Salt Analysis | 8 |
| Content Based Experiment | 6 |
| Project Work | 4 |
| Class record and viva | 4 |
| TOTAL | 30 |
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