ISC Class 12 Chemistry Syllabus 2025-26: As the new academic session is already ongoing, many boards have released their revised syllabus for the academic year 2025-26. The ICSE board is also one of them. It has made the syllabus available for classes 9th to 12th. If the students want to check the Class 12th Chemistry syllabus, then they can refer to this article. As a part of the syllabus, students can get to know about the assessment types, evaluation scheme, topics and chapters to be covered, chapter-wise marks distribution, and more. The curriculum is prepared with the objective of ensuring the development of effective communication skills, providing students with vast practical experiences, thus promoting practical learning at the school level, and providing holistic education to students. Check the full syllabus here.
ISC Class 12 Chemistry Syllabus 2025-26: Detailed Course Structure
Find the ISC Class 12th Chemistry Syllabus 2025 in the table below and check the chapter-wise topics to be studied for the academic session 2025-26 here.
| Solutions Study of concentration of solutions of solids in liquids, liquid in liquid, solubility of gases in liquids, solid solutions, Colligative properties - Raoult's law of relative lowering of vapour pressure (1st & 2nd), elevation of boiling point, depression of freezing point, osmotic pressure. Use of colligative properties in determining molecular masses of solutes, abnormal molecular mass association and dissociation, Van’t Hoff factor. |
| Electrochemistry Electrolytic and electrochemical cells, Redox reactions in electrochemical cells, Electromotive Force (emf) of a cell, standard electrode potential, Nernst equation and its application to chemical cells, Relation between Gibbs energy change and emf of a cell, Conductance in electrolytic solutions, specific, equivalent and molar conductivity, variations of conductivity with concentration, graphs; Kohlrausch's Law of electrolysis and Faraday’s Laws of electrolysis, Dry cell and lead accumulator, fuel cells, corrosion |
| Chemical Kinetics Meaning of Chemical Kinetics – slow and fast reactions, Rate of a reaction - average and instantaneous rate (graphical representation), Factors affecting rate of reaction: surface area, nature of reactants, concentration, temperature, catalyst and radiation, Order and molecularity of a reaction, rate law and specific rate constant, Integrated rate equations and half-life (only for zero and first order reactions), concept of collision theory (elementary idea, no mathematical treatment), Concept of threshold and activation energy, Arrhenious equation |
| d and f Block Elements Position in the periodic table, occurrence, electronic configuration and characteristics of transition metals, general trends in properties of the 3d-series of transition metals - metallic character, ionisation enthalpy, oxidation states, ionic radii, colour of ions, catalytic property, magnetic properties, interstitial compounds, alloy formation, preparation and properties of K2Cr2O7 and KMnO4, Lanthanoids and actinoids. |
| Coordination Compounds Concept of complexes, definition of ligands, coordination number, oxidation number, IUPAC nomenclature of mononuclear coordination compounds, Isomerism (structural and stereo), Bonding, Werner's theory, VBT and CFT, Colour, magnetic properties and shapes, Importance of coordination compounds (in qualitative analysis, extraction of metals and biological system). |
| Haloalkanes and Haloarenes Haloalkanes: General formula, nomenclature and classification, Nature of C–X bond, physical and chemical properties, mechanism of substitution reactions, optical rotation Haloarenes: Basic idea, nature of C–X bond, substitution reactions (directive influence of halogen in mono-substituted compounds only), Uses and environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons and DDT. |
| Alcohols, Phenols and Ethers Alcohols: Classification, general formula, structure and nomenclature, Methods of preparation, physical and chemical properties (of primary alcohols only), identification of primary, secondary and tertiary alcohols, mechanism of dehydration, uses with special reference to methanol and ethanol Phenols: Classification and nomenclature, Methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols Aliphatic Ethers: General formula, structure and nomenclature, Methods of preparation, physical and chemical properties, uses. Aryl ethers: Physical properties – state and solubility Chemical properties – preparation of anisole (Williamson’s synthesis), electrophilic substitution (halogenation, nitration and Friedel-Crafts reaction), Uses of ether |
| Aldehydes, Ketones and Carboxylic Acids Aldehydes and Ketones: Nomenclature, structure of methods of preparation of aldehydes and ketones, physical and chemical properties, mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes and uses Carboxylic Acids: Classification, general formula and structure of carboxylic group, Nomenclature, acidic nature, methods of preparation, physical and chemical properties and uses. |
| Organic compounds containing Nitrogen Aliphatic Amines: General formula and classification of amines, Structure of the amino group, nomenclature. Methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines Aniline: Preparation of nitrobenzene. Physical properties – state, solubility and boiling point, Chemical properties:- (Reaction with HCl and H2 SO4, Acetylation, alkylation, Benzoylation, Carbylamine reaction, Diazotisation, Electrophilic substitution (bromination, nitration and sulphonation), Tests for aniline, Uses of aniline Cyanides and Isocyanides: Methods of preparation, Cyanides: - From alkyl halide, From amide, Isocyanides: -From alkyl halide, From primary amines Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry |
| Biomolecules Carbohydrates– Definition, Classification (aldoses and ketoses), monosaccharides (glucose and fructose), D-L configuration, oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen); Importance of carbohydrates Proteins– structural units of proteins, Basic idea of - amino acids, peptide bond, polypeptides, proteins, structure of proteins- primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of proteins, Enzymes, hormones- elementary idea only Vitamins- Classification and functions, Vitamins A, B, C, D, E and K: classification (fat soluble and water soluble), deficiency diseases, (Chemical names and structures are not required) Nucleic Acids- DNA and RNA |
To download the ISC Class 12 Chemistry Syllabus 2025, click on the link below
ISC Class 12 Chemistry Course Structure/ Marking Scheme 2025-26
Check the ISC Class 12 Chemistry marking scheme from the table below:
| Unit Name | Marks |
| Solutions | Physical Chemistry 25 Marks |
| Electrochemistry | |
| Chemical Kinetics | |
| D and f block elements | Inorganic Chemistry 14 Marks |
| Coordination Compounds | |
| Haloalkanes and Haloarenes | Organic Chemistry 31 Marks |
| Alcohols, Phenols and Ethers | |
| Aldehydes, Ketones and Carboxylic Acids | |
| Organic Compounds Containing Nitrogen | |
| Biomolecules |
ISC Class 12 Chemistry Marks Evaluation/Assessment Types
Check how the board has decided to segregate 100 marks into various forms of assessments to check the understanding of the subject in students.
| Assessment Type | Marks |
| Theory Paper | 70 |
| Practical | 15 |
| Project Work | 10 |
| Practical File | 5 |
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