CBSE Syllabus for Chemistry Class 12
Updated on: Jan 28, 2013
Allocation of unit-wise marks in CBSE Class 12 Chemistry:
Unit 1: Solid State
Classification of solids based on different binding forces: molecular, ionic, covalent and metallicsolids, amorphous and crystalline solids (elementary idea), Crystal Lattices and unit cells,calculation of density of unit cell, packing in solids, voids, number of atoms per unit cell in a cubic unit cell, point defects, electrical and magnetic properties.
Unit 2: Solutions
Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gasesin liquids, solid solutions, colligative properties - relative lowering of vapour pressure, elevationof boiling point, depression of freezing point, osmotic pressure, determination of molecular massesusing colligative properties, abnormal molecular mass.
Unit 3: Solutions
Redox reactions, conductance in electrolytic solutions, specific and molar conductivity, variations102of conductivity with concentration, Kohlrausch's Law, electrolysis and law of electrolysis(elementary idea), dry cell -electrolytic cells and Galvanic cells, lead accumulator, EMF of a cell,standard electrode potential, Nernst equation and its application to chemical cells, fuel cells.
Unit 4: Electrochemistry
Rate of a reaction (Average and instantaneous), factors affecting rate of reaction: concentration,temperature, catalyst order and molecularity of a reaction, rate law and specific rate constant,integrated rate equation and half life (only for zero and first order reactions), collision theory(elementary idea, no mathematical treatment).
Unit 5: Surface Chemistry
Adsorption - physisorption and chemisorption, factors affecting adsorption of gases on solids,colloids distinction between true solutions,colloids and suspension; lyophilic , lyophobicmultimolecular and macromolecular colloids; properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation, emulsion - types of emulsions.
Unit 6: General Principles and Processes of Isolation of Elements
Principles and methods of extracting - concentration, oxidation, reduction - electrolytic method and refining; occurrence and principles of extraction of aluminium, copper, zine and iron.
Unit 7: P -Block Elements
Group -15 Elements: General introduction, electronic configuration, occurrence, oxidationstates, trends in physical and chemical properties; compounds of nitrogen: preparation and properties of ammonia and nitric acid, Phosphorous - allotropic forms, compounds of
phosphorous: preparation and properties of phosphine, halides (PCI3, PCI5) and oxoacids (elementary idea only).
Group 16 Elements: General introduction, electronic configuration, oxidation states, occurrence,trends in physical and chemical properties, simple oxides, Ozone, Sulphure -allotropic forms;compounds of sulphure: sulphuric acid: industrial process of manufacture, properties and uses,oxoacids of sulphure (Structures only).
Group 17 Elements: General introduction, electronic configuration, oxidation states, occurrence,trends in physical and chemical properties; compounds of halogens, hydrochloric acid, interhalogen compounds, oxoacids of halogens (structures only).
Group 18 Elements: General introduction, electronic configuration, occurrence, trends in physical and chemical properties, uses.
Unit 8: D -and F -Block Elements
General introduction, electronic configuration, occurrence and characteristics of transition metals,general trends in properties of the first row transition metals - metallic character, ionization enthalpy,oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds,alloy formation, preparation and properties of K2Cr2O7 and KMnO4.
Lanthanoids - Electronic configuration, oxidation states and lanthanoid contraction.
Actinoids - Electronic configuration, oxidation states.
Unit 9: Coordination Compounds
Coordination compounds - Introduction, ligands, coordination number, colour, magneticproperties and shapes, IUPAC nomenclature of mononuclear coordination compounds. Bonding,isomerism, importance of coordination compounds (in qualitative analysis, extraction of metals
and biological system).
Unit 10: Haloalkanes and Haloarenes
Haloalkanes: Nomenclature, nature of C -X bond, physical and chemical properties, mechanism of substitution reactions.
Haloarenes: Nature of C -X bond, substitution reactions (Directive influence of halogen in monosubstituted compounds only)
Uses and environmental effects of - trichloromethane, tetrachloromethane, iodoform.
Unit 11: Alcohols, Phenols and Ethers
Alcohols: Nomenclature, methods of preparation, physical and chemical properties( of primary alcohols only), identification of primary, secondary and tertiary alcohols, mechanism of dehydration,uses of methanol and ethanol.
Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophillic substitution reactions, uses of phenols. Ethers: Nomenclature, methods of preparation, physical and chemical properties, uses.
Unit 12: Aldehydes, Ketons and Carboxylic Acids
Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation,physical and chemical properties, mechanism of nucleophillic addition, reactivity of alpha hydrogenin aldehydes: uses.
Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical properties; uses.
Unit 13: Organic Compounds containing Nitrogen
Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines.Cyanides and Isocyanides - will be mentioned at relevant places in context.Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry.
Unit 14: Biomolecules
Carbohydrates - Classification (aldoses and ketoses), monosaccahrides (glucose and fructose),oligosaccharides (sucrose, lactose, maltose), importance.
Proteins -Elementary idea of - amino acids, peptide bond, polypeptides, proteins, structure of proteins - primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of proteins.
Vitamins - Classification and functions.
Nucleic Acids: DNA and RNA.
Unit: 15 Polymers
Classification - natural and synthetic, methods of polymerization (addition and condensation), copolymerization, some important polymers: natural and synthetic like polythene, nylon polyesters, bakelite, rubber.
Unit 16: Chemistry in Everyday Life
Chemicals in medicines - analgesics, tranquilizers antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamines. Chemicals in food - preservations, artificial sweetening agents. Cleansing agents- soaps and detergents, cleansing action.
| Unit No. | Unit Name | Marks |
| 1 | Solid State | 04 |
| 2 | Solutions | 05 |
| 3 | Electrochemistry | 05 |
| 4 | Chemical Kinetics | 05 |
| 5 | Surface Chemistry | 04 |
| 6 | General Principles and Processes of Isolation of Elements | 03 |
| 7 | P -Block Elements | 08 |
| 8 | D -and F -Block Elements | 05 |
| 9 | Coordination Compounds | 03 |
| 10 | Haloalkanes and Haloarenes | 04 |
| 11 | Alcohols, Phenols and Ethers | 04 |
| 12 | Aldehydes, Ketons and Carboxylic Acids | 06 |
| 13 | Organic Compounds containing Nitrogen | 04 |
| 14 | Biomolecules | 04 |
| 15 | Polymers | 03 |
| 16 | Chemistry in Everyday Life | 03 |
Unit 1: Solid State
Classification of solids based on different binding forces: molecular, ionic, covalent and metallicsolids, amorphous and crystalline solids (elementary idea), Crystal Lattices and unit cells,calculation of density of unit cell, packing in solids, voids, number of atoms per unit cell in a cubic unit cell, point defects, electrical and magnetic properties.
Unit 2: Solutions
Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gasesin liquids, solid solutions, colligative properties - relative lowering of vapour pressure, elevationof boiling point, depression of freezing point, osmotic pressure, determination of molecular massesusing colligative properties, abnormal molecular mass.
Unit 3: Solutions
Redox reactions, conductance in electrolytic solutions, specific and molar conductivity, variations102of conductivity with concentration, Kohlrausch's Law, electrolysis and law of electrolysis(elementary idea), dry cell -electrolytic cells and Galvanic cells, lead accumulator, EMF of a cell,standard electrode potential, Nernst equation and its application to chemical cells, fuel cells.
Unit 4: Electrochemistry
Rate of a reaction (Average and instantaneous), factors affecting rate of reaction: concentration,temperature, catalyst order and molecularity of a reaction, rate law and specific rate constant,integrated rate equation and half life (only for zero and first order reactions), collision theory(elementary idea, no mathematical treatment).
Unit 5: Surface Chemistry
Adsorption - physisorption and chemisorption, factors affecting adsorption of gases on solids,colloids distinction between true solutions,colloids and suspension; lyophilic , lyophobicmultimolecular and macromolecular colloids; properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation, emulsion - types of emulsions.
Unit 6: General Principles and Processes of Isolation of Elements
Principles and methods of extracting - concentration, oxidation, reduction - electrolytic method and refining; occurrence and principles of extraction of aluminium, copper, zine and iron.
Unit 7: P -Block Elements
Group -15 Elements: General introduction, electronic configuration, occurrence, oxidationstates, trends in physical and chemical properties; compounds of nitrogen: preparation and properties of ammonia and nitric acid, Phosphorous - allotropic forms, compounds of
phosphorous: preparation and properties of phosphine, halides (PCI3, PCI5) and oxoacids (elementary idea only).
Group 16 Elements: General introduction, electronic configuration, oxidation states, occurrence,trends in physical and chemical properties, simple oxides, Ozone, Sulphure -allotropic forms;compounds of sulphure: sulphuric acid: industrial process of manufacture, properties and uses,oxoacids of sulphure (Structures only).
Group 17 Elements: General introduction, electronic configuration, oxidation states, occurrence,trends in physical and chemical properties; compounds of halogens, hydrochloric acid, interhalogen compounds, oxoacids of halogens (structures only).
Group 18 Elements: General introduction, electronic configuration, occurrence, trends in physical and chemical properties, uses.
Unit 8: D -and F -Block Elements
General introduction, electronic configuration, occurrence and characteristics of transition metals,general trends in properties of the first row transition metals - metallic character, ionization enthalpy,oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds,alloy formation, preparation and properties of K2Cr2O7 and KMnO4.
Lanthanoids - Electronic configuration, oxidation states and lanthanoid contraction.
Actinoids - Electronic configuration, oxidation states.
Unit 9: Coordination Compounds
Coordination compounds - Introduction, ligands, coordination number, colour, magneticproperties and shapes, IUPAC nomenclature of mononuclear coordination compounds. Bonding,isomerism, importance of coordination compounds (in qualitative analysis, extraction of metals
and biological system).
Unit 10: Haloalkanes and Haloarenes
Haloalkanes: Nomenclature, nature of C -X bond, physical and chemical properties, mechanism of substitution reactions.
Haloarenes: Nature of C -X bond, substitution reactions (Directive influence of halogen in monosubstituted compounds only)
Uses and environmental effects of - trichloromethane, tetrachloromethane, iodoform.
Unit 11: Alcohols, Phenols and Ethers
Alcohols: Nomenclature, methods of preparation, physical and chemical properties( of primary alcohols only), identification of primary, secondary and tertiary alcohols, mechanism of dehydration,uses of methanol and ethanol.
Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophillic substitution reactions, uses of phenols. Ethers: Nomenclature, methods of preparation, physical and chemical properties, uses.
Unit 12: Aldehydes, Ketons and Carboxylic Acids
Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation,physical and chemical properties, mechanism of nucleophillic addition, reactivity of alpha hydrogenin aldehydes: uses.
Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical properties; uses.
Unit 13: Organic Compounds containing Nitrogen
Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines.Cyanides and Isocyanides - will be mentioned at relevant places in context.Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry.
Unit 14: Biomolecules
Carbohydrates - Classification (aldoses and ketoses), monosaccahrides (glucose and fructose),oligosaccharides (sucrose, lactose, maltose), importance.
Proteins -Elementary idea of - amino acids, peptide bond, polypeptides, proteins, structure of proteins - primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of proteins.
Vitamins - Classification and functions.
Nucleic Acids: DNA and RNA.
Unit: 15 Polymers
Classification - natural and synthetic, methods of polymerization (addition and condensation), copolymerization, some important polymers: natural and synthetic like polythene, nylon polyesters, bakelite, rubber.
Unit 16: Chemistry in Everyday Life
Chemicals in medicines - analgesics, tranquilizers antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamines. Chemicals in food - preservations, artificial sweetening agents. Cleansing agents- soaps and detergents, cleansing action.