CBSE Class 11 Chemistry Syllabus 2026-27

1. Course Overview

• Subject Code: 043

• Total Theory Marks: 70

• Total Practical Marks: 30

• Objective: Build a strong foundation in physical, inorganic, and organic chemistry for higher studies and competitive exams.

2. Theory Syllabus (70 Marks)

Unit 1: Some Basic Concepts of Chemistry (7 Marks)

• Importance and scope of Chemistry

• Nature of matter, laws of chemical combination

• Dalton’s atomic theory, mole concept, stoichiometry

Unit 2: Structure of Atom (9 Marks)

• Discovery of Electron, Proton, Neutron

• Atomic number, isotopes, isobars

• Thomson, Rutherford, Bohr models

• Dual nature of matter, Heisenberg uncertainty principle

• Quantum numbers, shapes of s, p, d orbitals

Unit 3: Classification of Elements and Periodicity in Properties (6 Marks)

• Modern periodic law and periodic table

• Periodic trends: atomic radii, ionization enthalpy, electronegativity

• Nomenclature of elements with atomic number > 100

Unit 4: Chemical Bonding and Molecular Structure (7 Marks)

• Valence electrons, ionic/covalent bonds

• Lewis structure, VSEPR theory, hybridization

• Molecular orbital theory (homonuclear diatomic molecules)

• Hydrogen bond

Unit 5: Chemical Thermodynamics (9 Marks)

• System, surroundings, work, heat, energy

• First law of thermodynamics, enthalpy, Hess’s law

• Spontaneity, Gibbs energy, entropy

Unit 6: Equilibrium (7 Marks)

• Physical/chemical equilibrium, Le Chatelier’s principle

• Ionic equilibrium: pH, hydrolysis, buffer solutions

• Solubility product, common ion effect

Unit 7: Redox Reactions (4 Marks)

• Oxidation-reduction, oxidation number

• Balancing redox reactions, applications

Unit 8: Organic Chemistry – Some Basic Principles and Techniques (11 Marks)

• Purification, qualitative/quantitative analysis

• IUPAC nomenclature, electronic displacements

• Types of organic reactions

Unit 9: Hydrocarbons (10 Marks)

• Alkanes, alkenes, alkynes: nomenclature, isomerism, preparation, properties

• Aromatic hydrocarbons: benzene, resonance, electrophilic substitution

3. Practical Syllabus (30 Marks)

A. Basic Laboratory Techniques

• Cutting/bending glass tube, drawing out a glass jet, boring a cork

B. Characterization and Purification

• Determination of melting/boiling point of organic compounds

• Crystallization of impure samples (Alum, Copper Sulphate, Benzoic Acid)

C. Experiments Based on pH

• pH determination of fruit juices, acids, bases, salts

• Study pH change in titration of strong base/weak acids

D. Chemical Equilibrium

• Study shift in equilibrium (ferric ions + thiocyanate ions, cobalt complex + chloride ions)

E. Quantitative Estimation

• Preparation of standard solutions (Oxalic acid, Sodium carbonate)

• Titration: Sodium hydroxide vs. Oxalic acid; Hydrochloric acid vs. Sodium carbonate

F. Qualitative Analysis

• Detection of cations (Pb²⁺, Cu²⁺, Al³⁺, Fe³⁺, etc.) and anions (CO₃²⁻, S²⁻, Cl⁻, etc.)

• Detection of Nitrogen, Sulphur, Chlorine in organic compounds

G. Projects (Suggested)

• Checking bacterial contamination in drinking water

• Study of water purification methods

• Testing hardness, presence of Iron/Fluoride/Chloride in drinking water

4. Evaluation Scheme for Practicals (30 Marks)

5. Prescribed Books

• NCERT Chemistry Part-I & Part-II (Class XI)

• Manual of Microscale Chemistry Laboratory Kit

6. Exam Pattern & Internal Assessment

• Theory Exam: 70 marks (3 hours)

• Practical Exam: 30 marks

• Internal Choice: 33% in all sections

7. Additional Notes

• s & p Block Elements and Gaseous State are included but assessed only formatively.

• NCERT Textbooks are the primary reference.