CBSE Class 10 Science Syllabus - Free PDF Download
CBSE Syllabus 2026-27 Class 10: The CBSE Class 10 Science Syllabus for the examination year 2026-27 has been released by the Central Board of Secondary Education, CBSE. 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 2026-27 CBSE Class 10 Science Board Exam will entirely be based on the most recent syllabus. Therefore, students must thoroughly understand the new CBSE syllabus to prepare for their annual exam properly.
The detailed CBSE Class 10 Science Syllabus for 2026-27 is below.
Academic year:
CBSE Class 10 Science Revised Syllabus
CBSE Class 10 Science Course Structure 2026-27 With Marking Scheme
| # | Unit/Topic | Marks | Marks with options |
|---|---|---|---|
| 1 | Chemical Substances-Nature and Behaviour | 25 | |
| 1 | Chemical Reactions and Equations | ||
| 2 | Acids, Bases and Salts | ||
| 3 | Metals and Non-metals | ||
| 4 | Carbon and its Compounds | ||
| 2 | World of Living | 25 | |
| 5 | Life Processes | ||
| 6 | Control and Coordination | ||
| 7 | How do Organisms Reproduce? | ||
| 8 | Heredity | ||
| 3 | Natural Phenomena | 12 | |
| 9 | Light – Reflection and Refraction | ||
| 10 | The Human Eye and the Colourful World | ||
| 4 | Effects of Current | 13 | |
| 11 | Electricity | ||
| 12 | Magnetic Effects of Electric Current | ||
| 5 | Natural Resources | 5 | |
| 13 | Our Environment | ||
| Total | - | - |
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Syllabus
1: Chemical Substances-Nature and Behaviour [Revision]
CBSE Class 10 Science Syllabus
1 Chemical Reactions and Equations [Revision]
- Chemical Reaction
- Characteristics of Chemical Reactions
- Chemical Equations
- Balanced and Unbalanced Chemical Equations
- Balancing Chemical Equation
- Types of Chemical Reactions > Combination Reaction
- Types of Chemical Reactions > Decomposition Reaction
- Types of Chemical Reactions > Single Displacement Reaction
- Types of Chemical Reactions > Double Displacement Reaction
- Types of Chemical Reactions > Reversible and Irreversible Reactions
- Types of Chemical Reactions > Oxidation and Reduction Reactions
- Corrosion of Metals
- Rancidity
2 Acids, Bases and Salts [Revision]
- Introduction to Acids, Bases and Indicators
- Indicators for Testing Acids and Bases
- Acids
- Properties of Acids
- Common Properties of Acids
- Uses of Acids
- Bases
- Definition: Base
- Definition: Alkali
- Properties of Bases
- Uses of Bases
- Chemical Properties of Acids and Bases
- Common Properties of Acids and Bases
- Introduction
- Definition: Dilution
- Activity 1
- Activity 2: Acid or a Base in a Water Solution
- Activity 3: Acid or a Base in a Water Solution
- Strength of Acid and Base Solutions : pH Scale
- Universal Indicator
- Importance of pH in Everyday Life
- Key Points: Importance of pH in Everyday Life
- Salts
- Definition: Salt
- Salts > Family of Salts
- Activity
- Salts > pH of Salts
- Activity
- Common Salt
- Sodium hydroxide
- Washing Soda
- Baking Soda
- Bleaching Powder
- Introduction
- Experiment
- Properties
- Uses
- Plaster of Paris
- Water of Crystallisation: Hydrated Salts
3 Metals and Non-metals [Revision]
- Metals
- Definition: Metals
- Non-Metals
- Definition: Non-Metals
- Definition: Metalloids or Semi-Metals
- Physical Properties of Metals
- Physical Properties of Non-Metals
- Reaction of Metals with Oxygen
- Reaction of Metals with Water
- Reaction of Metals with Dilute Acids
- Reaction of Metals with Salt Solutions
- Reaction of Metals with Chlorine
- Reaction of Metals with Hydrogen
- Reaction of Non-Metals with Oxygen
- Reaction of Non-Metals with Water and Dilute Acids
- Reaction of Non-Metals with Salt Solutions and Chlorine
- Reaction of Non-Metals with Hydrogen
- Metals Vs Non Metals
- Uses of Metals and Non Metals
- Reactions of Metals and Non-Metals
- Ions
- Formation of Positive Ions (or Cations)
- Formation of Negative Ions (or Anions)
- Ionic Bond
- Ionic Compounds
- The Covalent Bond
- Definition: Covalent Compound
- Definition: Covalent Molecule
- Key Points: The Covalent Bond
- Single Bond
- Double Bond
- Triple Bond
- Properties of Ionic Compounds
- Properties of Covalent Compounds
- Occurrence of Metals
- Definition: Minerals
- Definition: Ores
- Key Points: Occurrence of Metals
- Basic Principles of Metallurgy > Concentration of Ores
- Conversion of Concentrated Ore into Metal
- Extraction of Highly Reactive Metals
- Extraction of Moderately Reactive Metals
- Extraction of Less Reactive Metals
- Basic Principles of Metallurgy > Refining of Metals
- Corrosion of Metals
- Conditions for Rusting of Iron
- Prevention of Corrosion
- Alloys
4 Carbon and its Compounds [Revision]
- Introduction to Carbon
- Characters of Carbon
- The Covalent Bond
- Definition: Covalent Compound
- Definition: Covalent Molecule
- Key Points: The Covalent Bond
- Allotropes of Carbon > Diamond
- Crystalline Forms
- Diamond
- Uses of Diamond
- Allotropes of Carbon > Graphite
- Graphite
- Experiment
- Uses of Graphite
- Allotropes of Carbon > Fullerene
- Fullerene
- Uses of Fullerene
- Organic Compounds
- Definition: Organic Compounds
- Key Points: Organic Compounds
- Hydrocarbons
- Saturated Hydrocarbons (Alkanes)
- Unsaturated Hydrocarbons (Alkenes and Alkynes)
- Alkyl Group
- Cyclic Hydrocarbons
- Chains, Branches and Rings of Carbon Compound
- Naming of Hydrocarbons
- Isomerism
- Definition: Isomers
- Homologous Series
- Functional Groups in Carbon Compounds
- Haloalkanes
- Alcohols
- Definition: Alcohol
- Key Points: Occurence of Ethanol
- Key POints: Alcohol
- Aldehyde
- Ketones
- Carboxylic Acids
- Definition: Carboxylic Acid
- Formula: Carboxylic Acid
- Key Points: Carboxylic Acid
- Coal and Petroleum
- Nomenclature of Carbon Compounds
- Chemical Properties of Carbon Compounds > Combustion
- Chemical Properties of Carbon Compounds > Oxidation
- Definition: Oxidation Reaction
- Definition: Oxidants or Oxidising Agents
- Key Points: Oxidation
- Chemical Properties of Carbon Compounds > Addition Reaction
- Chemical Properties of Carbon Compounds > Substitution Reaction
- Ethanol
- Ethanoic Acid
- Soaps
- Detergents
2: World of Living [Revision]
CBSE Class 10 Science Syllabus
5 Life Processes [Revision]
- Characteristics of Living Things
- Life Processes in Living Organisms
- Nutrition
- Definition: Nutrition
- Definition: Enzymes
- Autotrophic Nutrition
- Definition: Autotrophic Nutrition
- Key Points: Autotrophic Nutrition
- Heterotrophic Nutrition
- Definition: Heterotrophic Nutrition
- Nutrition in Plants
- Experiments on Photosynthesis
- Raw Materials for Photosynthesis
- Site of Photosynthesis
- Light Reactions
- Dark Reaction
- Nutrition in Animals
- Nutrition in Amoeba
- Nutrition in Human Beings
- Definition: Saliva
- Definition: Salivary Amylase
- Key Points: Nutrition in Human Beings
- Respiration
- Aerobic Respiration
- Anaerobic Respiration
- Respiration in Plant
- Do plants breathe?
- The process of respiration in plants
- Respiration in roots
- Respiration in stems
- Respiration in leaves
- Types of respiration
- Aerobic Respiration
- Anaerobic Respiration
- Respiration in Animals
- Human Respiratory System
- Respiratory System
- Exchange of Gases in Lungs
- Significance of Respiration
- Key Points: Respiratory System
- Transportation in Living Organisms
- Transportation in Plants
- Transportation in Human Beings
- Blood
- Circulatory Pathways
- Blood Pressure (B.P.)
- Introduction
- Definition: Blood Pressure
- Definition: Systolic Pressure
- Definition: Diastolic Pressure
- Definition: Hypertension
- Definition: Sphygmomanometer
- Pulmonary and Systemic Circulation (Double Circulation)
- Lymph and Lymphatic System
- Definition: Lymph
- Key Points: Lymph and Lymphatic System
- Lymph and Lymphatic System
- Excretion
- Definition: Excretion
- Definition: Excretory System
- Introduction
- Experiment
- Excretion in Plants
- Introduction
- Excretory Products in Plants
- Key Points: Excretion in Plants
- Excretion in Animals
- Excretion in Human Beings
- Renal Failure (Kidney Failure)
- Organ and Body Donation
6 Control and Coordination [Revision]
- Response to Stimuli
- Coordination in Plants
- Plant Hormones
- Definition: Stimuli
- Definition: Responses
- Definition: Hormones
- Definition: Phytohormones
- Overview of Plant Hormones and Roles
- Plant Movements
- Vital movements
- Physical Movement (Hygroscopic Movements)
- Tropic Movements in Plants
- Definition: Tropism
- Definition: Tropic
- Definition: Tropic Movements
- Phototropism
- Definition: Phototropism
- Definition: Positive Phototropism
- Definition: Negative Phototropism
- Geotropism
- Definition: Geotropism / Gravitropism
- Definition: Positive Geotropism
- Definition: Negative Geotropism
- Chemotropism
- Definition: Chemotropism
- Hydrotropism
- Definition: Hydrotropism
- Definition: Positive Hydrotropism
- Definition: Negative Hydrotropism
- Thigmotropism
- Definition: Thigmotropism
- Nastic Movements
- Thigmonasty
- Photonasty
- Coordination in Animals
- Human Nervous System
- Introduction
- Components of Nervous System
- Need of Nervous System
- Key Points: Human Nervous System
- Central Nervous System (CNS)
- Central Nervous System
- Different regions of Brain and its functions
- Voluntary Nervous System
- The Human Brain
- Definition: Meninges
- Definition: Meningitis
- Key Points: Human Brain
- The Spinal Cord
- Key Points: Spinal Cord
- Biomolecules in the Cell > Hormones
- Endocrine Glands
- Human Endocrine System
- Definition: Endocrine System
7 How do Organisms Reproduce? [Revision]
- DNA Copying and Variation
- The Importance of Variation
- Reproduction
- Modes of Reproduction
- Asexual Reproduction in Unicellular Organisms > Binary Fission
- Binary Fission > Simple Binary Fission
- Binary Fission > Longitudinal Binary Fission
- Binary Fission > Transverse Binary Fission
- Asexual Reproduction in Unicellular Organisms > Multiple Fission
- Asexual Reproduction in Multicellular Organisms > Fragmentation
- Asexual Reproduction in Multicellular Organisms > Regeneration
- Asexual Reproduction in Unicellular Organisms > Budding
- Asexual Reproduction in Multicellular Organisms > Budding
- Asexual Reproduction in Multicellular Organisms > Spore Formation
- Vegetative Reproduction or Vegetative Propagation
- Tissue Culture
- Definition: Tissue Culture
- Introduction
- Tissue Culture Stages
- Processes in Tissue Culture
- Sexual Reproduction in Plants
- Pollination
- Self-pollination
- Cross-pollination
- Fertilisation in Flowering Plants
- Formation of Seed and Fruit
- Seed Germination
- Sexual Reproduction in Animals
- Puberty
- The Male Reproductive System
- The Female Reproductive System
- Fertilization in Humans
- Menstrual Cycle (Ovarian Cycle)
- Major Events of Menstrual Cycle
- Menarche and Menopause
- Birth Control
- Induced Abortion or Medical Termination of Pregnancy (MTP)
- Sexually Transmitted Diseases (STD) or Sexually Transmitted Infections (STI)
- Concept of Reproductive Health
8 Heredity [Revision]
- Heredity
- Variation
- Accumulation of Variation During Reproduction
- Gregor Johann Mendel – Father of Genetics
- Monohybrid Cross
- Dihybrid Cross
- Characteristics (or Traits) Transmitted to Progeny
- Inheritance of Blood Groups
- Sex Determination
- Acquired and Inherited Traits
3: Natural Phenomena [Revision]
CBSE Class 10 Science Syllabus
9 Light – Reflection and Refraction [Revision]
- Nature of Light
- Reflection of Light
- Introduction
- Activity
- Experiment
- Key Points: Reflection of Light
- Reflection of Light from Plane Surfaces: Plane Mirror
- Law of Reflection of Light
- Laws of Reflection
- Experiment
- Regular Reflection and Diffuse Reflection of Light
- Objects and Images
- Images Formed by a Plane Mirrors
- The Position of Image Formed in a Plane Mirror
- Uses of Plane Mirrors
- Spherical Mirrors
- Image Formation by Spherical Mirrors
- Rules for Obtaining Images Formed by Concave Mirrors
- Formation of Different Types of Images by a Concave Mirror
- Representation of Images Formed by Spherical Mirrors Using Ray Diagrams
- Mirror Formula and Magnification
- Rules for Obtaining Images Formed by Convex Mirrors
- Formation of Image by a Convex Mirror
- Refraction of Light
- Effects of Refraction of Light
- Laws of Refraction of Light
- Refraction through a Rectangular Glass Slab
- The Refractive Index
- Refraction by Spherical Lenses
- Rules for Obtaining Images Formed by Convex Lenses
- Formation of Different Types of Images by a Convex Lens
- Image Formation by Lenses
- Image Formation in Lenses Using Ray Diagrams
- Sign Convention for Reflection by Spherical Mirrors
- Lens Formula and Magnification
- Lens Formula and Magnification Formulae for a Concave Lens
- Power of a Lens
10 The Human Eye and the Colourful World [Revision]
- Human Eye
- Working of the Eye
- Rods and Cones
- Power of Accommodation
- Range of Vision of a Normal Human Eye
- Advantages of Having Two Eyes for Vision
- Defects of Vision and Their Corrections > Myopia
- Defects of Vision and Their Corrections > Hypermetropia
- Defects of Vision and Their Corrections > Presbyopia
- Glass Prism
- Refraction of Light through a Prism
- Dispersion of Light Through a Prism
- The Rainbow
- Atmospheric Refraction
- Scattering of Light
4: Effects of Current [Revision]
CBSE Class 10 Science Syllabus
11 Electricity [Revision]
- Electric Charges
- Conductors and Insulators
- Electric Potential and Potential Difference
- Introduction
- Definition: Potential Difference
- Formula: Potential Difference
- Example
- Electric Current
- Electric Circuit
- Circuit Diagram
- Introduction
- Table: Symbols of Components
- Ohm's Law
- Resistance of a Conductor
- Graph Between V and I
- Experiment to Verify Ohm's Law
- Good Conductors, Resistors and Insulators
- Factors Affecting the Resistance of a Conductor
- Resistivity
- Resistance of a System of Resistors
- Resistors in Series
- Key Points: Series Combination of Resistors
- Resistors in Series
- Domestic Electric Circuits
- Heating Effect of Electric Current
- Practical Applications of Heating Effect of Electric Current
- Electric Power
- Commercial Unit of Electrical Energy
- Key Points: Commercial Units of Electrical Energy
- Effects Produced by Electric Current
- Applications of the Heating Effect of Current
12 Magnetic Effects of Electric Current [Revision]
- Introduction to Magnets and Their Properties
- Electromagnetism
- Magnetic Field and Field Lines
- Magnetic Field of Earth
- Magnetic Effect of Current (or Electromagnetism)
- Magnetic Field Due to a Current-Carrying Conductor
- Activity
- Magnetic Field due to a Current through a Straight Conductor
- Right-hand Thumb Rule
- Magnetic Field due to a Current through a Circular Loop
- Magnetic Field due to a Current in a Solenoid
- Electromagnet
- Introduction
- Michael Faraday: A Pioneer in Electromagnetism
- Experiment
- Construction of an I-Shaped Electromagnet
- Construction of a U-Shaped Electromagnet
- Ways of Increasing the Magnetic Field of an Electromagnet
- Magnetism in Human Beings
- Force on a Current-Carrying Conductor in a Magnetic Field
- Domestic Electric Circuits
5: Natural Resources [Revision]
CBSE Class 10 Science Syllabus
13 Our Environment [Revision]
- Environment
- Biodegradable and Non-biodegradable Wastes
- Concept of Ecosystem
- Components of an Ecosystem
- The Functioning of an Ecosystem
- Food Chain
- Food Web
- Trophic Levels
- Transfer of Energy in Food Chain
- Flow of Energy and Materials
- Ten Percent Law
- Biological Magnification
- Ozone Layer Depletion
- Key Points: Ozone Layer Depletion
- Waste Management
- Key Points: Waste Management
