CISCE ISC Class 12 Chemistry (Theory) Syllabus - Free PDF Download
CISCE Syllabus 2025-26 ISC Class 12: The CISCE ISC Class 12 Chemistry (Theory) Syllabus for the examination year 2025-26 has been released by the Council for the Indian School Certificate Examinations, CISCE. The board will hold the final examination at the end of the year following the annual assessment scheme, which has led to the release of the syllabus. The 2025-26 CISCE ISC Class 12 Chemistry (Theory) Board Exam will entirely be based on the most recent syllabus. Therefore, students must thoroughly understand the new CISCE syllabus to prepare for their annual exam properly.
The detailed CISCE ISC Class 12 Chemistry (Theory) Syllabus for 2025-26 is below.
Academic year:
CISCE ISC Class 12 Chemistry (Theory) Revised Syllabus
CISCE ISC Class 12 Chemistry (Theory) and their Unit wise marks distribution
CISCE ISC Class 12 Chemistry (Theory) Course Structure 2025-26 With Marking Scheme
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Syllabus
1: Physical Chemistry [Revision]
CISCE ISC Class 12 Chemistry (Theory) Syllabus
1 Solid State [Revision]
- Introduction to Solid State
- Classification of Solids
- Crystalline Solids
- Amorphous Solids
- Distinctions between Crystalline and Amorphous Solids
- Classification of Crystalline Solids
- Space Lattice
- States of Matters: Structure and Properties Solid State
- Definition of Unit Cell
- Introduction
- Parameters of a Unit Cell
- Types of Unit Cells
- Definition of Unit Cell
- Different Types of Cubic Systems
- Number of Particles Per Unit Cell in Different Cubic Systems
- Rules for Calculating the Number of Particles in a Cubic Unit Cell
- Calculation of Number of Particles (Atoms) in the Unit Cells of Different Types of Cubic Systems
- Calculation of the Space Occupied (Packing Fraction) in the Unit Cells of Different Types of Cubic Systems
- Introduction
- Simple cubic unit cell
- Body-centred cubic unit cell
- Face-centred cubic unit cell
- Calculation of Density of a Crystal
- Introduction
- Density of Cubic Crystals of Elements
- Density of Cubic Crystals of Ionic Compounds
- Close-packed Structures
- Packing of Constituent Particles in Crystals
- Close Packing in Two Dimensions
- Close Packing in Three Dimensions
- Coordination Number
- Voids in Close-Packed Structures
- Dimensions of Voids
- Radius of a tetrahedral void
- Radius of an octahedral void
- Location of Tetrahedral Voids
- Location of Octahedral Voids
- Radius Ratio Rules
- Number of Voids Filled and the Formula of the Compound
- Types of Crystalline Solids: Molecular Solids
- Introduction
- Characteristics of Molecular Solids
- Crystal Structure of Dry Ice (Solid CO₂)
- Types of Crystalline Solids: Ionic Solids
- Introduction
- Characteristics of Ionic Solids
- Structure of Ionic Solids
- Types of Crystalline Solids: Covalent Solids {Atomic or Network Solids)
- Introduction
- Structure, Properties and Uses of Diamond
- Structure, Properties and Uses of Graphite
- Types of Crystalline Solids: Metallic Solids
- Introduction
- Characteristics of Metallic Solids
- Crystal Structure of Copper Metal
- Imperfections (Defects) in Solids
- Imperfections (Defects) in Solids: Electronic Imperfections
- Imperfections (Defects) in Solids: Atomic Imperfections
- Introduction
- Point Defects
- Point Defects: Stoichiometric Defects
- Point Defects: Non-Stoichiometric Defects
- Lattice Defects
- Imperfections (Defects) Caused by Impurities
- Properties of Solids: Electrical Properties
- Conduction of Electricity by Solids
- Mechanism of Conduction of Electricity by Different Types of Solids (Band Theory)
- Conduction of Electricity by True Metals (Conductors) and Semiconductors and Nature of Insulators
- Applications of the n-type and p-type Semiconductors
- Properties of Solids: Magnetic Properties
- Properties of Solids: Dielectric Properties
- Amorphous Solids
- Introduction
- Properties of Amorphous Solids
- Uses of Amorphous Solids
2 Solutions [Revision]
- Introduction to Solutions
- Types of Solutions
- Solid-Liquid Solutions
- Liquid-Liquid Solutions
- Gas-Liquid Solutions
- Composition of a Solution
- Mass Percentage or Percentage by Mass (w/w) and Volume Percentage or Percentage by Volume (v/v)
- Grams Per Litre (g/L) and Molarity (M)
- Formality (F) and Molality (m)
- Normality (N) and Mole Fraction (χ)
- Parts per Million (ppm)
- Examples
- Intensive and Extensive Properties
- Colligative Properties
- Relative lowering of vapour pressure
- Determination of molar mass from relative lowering of vapour pressure
- Osmosis and osmotic pressure
- Isotonic solutions
- Non-Volatile, Non-Electrolytic and Electrolytic Solutes
- Dissociation and Association
- Dissociation
- Association
- Solutions of Gases in Liquids
- Introduction
- Henry's Law
- Applications and Limitations of Henry's Law
- Solid Solutions
- Solutions of Solids in Liquids
- Introduction
- Solubility
- Ideal Solutions
- Condition for the Formation of an Ideal Solution
- Characteristics of an Ideal Solution
- p-χ Diagram for an Ideal Solution
- Non-Ideal Solutions
- Types of Non-Ideal Solutions
- Solutions Showing Positive Deviation from Raoult's Law
- Solutions Showing Negative Deviation from Raoult's Law
- Principle of Fractional Distillation and Azeotropic (Constant Boiling) Mixtures
- Introduction
- Minimum boiling azeotropic mixtures
- Maximum boiling azeotropic mixtures
- Examples
- Colligative Properties and Determination of Molar Mass
- Relative Lowering of Vapour Pressure
- Introduction
- Measurement of Relative Lowering of Vapour Pressure
- Determination of Relative Molecular Mass of a Solute on the Basis of Relative Lowering of Vapour Pressure
- Examples
- Elevation of Boiling Point
- Introduction
- Elevation of Boiling Point
- Expression for Elevation of Boiling Point
- Important Generalisations for Elevation of Boiling Point
- Determination of Relative Molecular Mass of the Solute on the Basis of Elevation of Boiling Point
- Examples
- Depression of Freezing Point
- Introduction
- Depression of Freezing Point
- Expression for Depression of Freezing Point
- Important Generalisations for Depression of Freezing Point
- Determination of Relative Molecular Mass of a Solute on the Basis of Depression of Freezing Point
- Examples
- Osmosis and Osmotic Pressure
- Introduction
- Osmosis
- Difference between diffusion and osmosis
- Osmotic Pressure
- Reverse Osmosis and Water Purification
- Laws of Osmotic Pressure and van't Hoff's Equation
- Determination of Relative Molecular Mass of a Solute on the Basis of Osmotic Pressure
- Measurement of Osmotic Pressure
- Isotonic, Hypertonic and Hypotonic Solutions
- Biological Importance of Osmosis
- Examples
- Relative Lowering of Vapour Pressure
- Abnormal Molecular Masses
- Association and Dissociation of Solute Molecules : Cause of Abnormal Molecular Masses
- Van’t Hoff Factor
- Calculation of Extent of Association or Dissociation of a Solute in Solution
- Calculation of Degree of Association
- Calculation of Degree of Dissociation
- Examples
3 Electrochemistry [Revision]
4 Chemical Kinetics [Revision]
5 Surface Chemistry [Revision]
2: Inorganic Chemistry [Revision]
CISCE ISC Class 12 Chemistry (Theory) Syllabus
6 General Principles and Processes of Isolation of Elements [Revision]
7 p-Block Elements [Revision]
8 d-and f-Block Elements [Revision]
9 Coordination Compounds [Revision]
3: Organic Chemistry [Revision]
CISCE ISC Class 12 Chemistry (Theory) Syllabus
10 Haloalkanes and Haloarenes [Revision]
11 Alcohols, Phenols and Ethers [Revision]
12 Aldehydes, Ketones and Carboxylic Acids [Revision]
13 Organic Compounds Containing Nitrogen [Revision]
14 Biomolecules [Revision]
15 Polymers [Revision]
16 Chemistry in Everyday Life [Revision]
