CBSE Class 10 Science Syllabus 2026-27: Download PDF

CBSE Class 10 Science Syllabus 2026–27 has been officially released by the Central Board of Secondary Education for the new academic session. This updated syllabus provides students with a clear understanding of the course structure, unit-wise topics, and marking scheme. 

It helps students plan their preparation in a more organised and effective way by focusing on important concepts and high-weightage units. The syllabus includes key areas such as Chemical Substances, World of Living, Natural Phenomena, Effects of Current, and Natural Resources. 

By following the latest syllabus, students can build strong conceptual clarity and perform better in their board examinations. Check this article to download the CBSE Class 10 Science Syllabus 2026-27 PDF.

CBSE Class 10 Science Syllabus 2026-26: Key Highlights

CBSE Class 10 Science Syllabus has been released for 2026-27 session. Check the table below for CBSE Class 10 Science Syllabus PDF:

CBSE Class 10 Science Exam Pattern 2026–27

Students can check the following table for the CBSE Class 10 Science Exam Pattern 2026-27:

CBSE Class 10 Science Syllabus 2026-27

Unit I: Chemical Substances – Nature and Behaviour

Theme: Materials (Weightage: 25 Marks)

Topics:

1. Chemical Reactions and Equations

   • Chemical reactions and equations

   • Balanced chemical equation

   • Types of chemical reactions:

     • Combination

     • Decomposition

     • Displacement

     • Double displacement

     • Precipitation

     • Endothermic and exothermic reactions

   • Oxidation and reduction

2. Acids, Bases and Salts

   • Definitions (in terms of H⁺ and OH⁻ ions)

   • Indicators

   • Chemical properties and uses

   • Neutralization

   • Concept of pH scale (logarithmic explanation not required)

   • Importance of pH in everyday life

   • Preparation and uses of:

     • Sodium Hydroxide (NaOH)

     • Bleaching powder

     • Baking soda

     • Washing soda

     • Plaster of Paris

3. Metals and Non-metals

   • Properties of metals and non-metals

   • Reactivity series

   • Formation and properties of ionic compounds

   • Basic metallurgical processes

   • Corrosion and its prevention

4. Carbon and its Compounds

   • Covalent bonds: Formation and properties

   • Versatile nature of carbon

   • Hydrocarbons: Saturated and unsaturated

   • Homologous series

   • Nomenclature of:

     • Alkanes

     • Alkenes

     • Alkynes

     • Carbon compounds with functional groups (halogens, alcohol, ketones, aldehydes)

   • Chemical properties of carbon compounds:

     • Combustion

     • Oxidation

     • Addition

     • Substitution

   • Ethanol and ethanoic acid (properties and uses)

   • Soaps and detergents

Unit II: World of Living

Theme: The World of the Living (Weightage: 25 Marks)

Topics:

1. Life Processes

   • Characteristics of living beings

   • Nutrition

   • Respiration

   • Transport

   • Excretion (in plants and animals)

2. Control and Coordination

   • Tropic movements in plants

   • Plant hormones (introduction)

   • Nervous system in animals:

     • Voluntary, involuntary, and reflex actions

   • Chemical coordination: Animal hormones

3. Reproduction

   • Reproduction in animals and plants (asexual and sexual)

   • Reproductive health

   • Family planning: Needs and methods

   • Safe sex vs. HIV/AIDS

   • Childbearing and women’s health

4. Heredity and Evolution

   • Heredity and Mendel’s contribution

   • Laws for inheritance of traits

   • Sex determination (brief introduction)

Unit III: Natural Phenomena

Theme: Natural Phenomena (Weightage: 12 Marks)

Topics:

1. Reflection of Light

   • Curved surfaces (spherical mirrors)

   • Images formed by spherical mirrors

   • Centre of curvature, principal axis, focus, focal length

   • Mirror formula (no derivation)

   • Magnification

2. Refraction of Light

   • Laws of refraction

   • Refractive index

   • Refraction through spherical lenses

   • Image formation

   • Lens formula (no derivation)

   • Magnification

   • Power of a lens

3. The Human Eye

   • Working of the human eye

   • Defects of vision and their correction

4. Prism and Light Dispersion

   • Refraction through a prism

   • Dispersion of light

   • Scattering of light

   • Applications in daily life (excluding color of the sun at sunrise and sunset)

Unit IV: Effects of Current

Theme: How Things Work (Weightage: 13 Marks)

Topics:

1. Electric Current

   • Potential difference

   • Ohm’s law

   • Resistance and resistivity

   • Factors affecting resistance

   • Series and parallel combination of resistors

   • Applications in daily life

2. Heating Effect of Electric Current

   • Applications in daily life

   • Electric power

   • Relationships between P, V, I, and R

3. Magnetic Effects of Current

   • Magnetic field and field lines

   • Field due to:

     • A current-carrying conductor

     • A coil or solenoid

   • Force on current-carrying conductor

   • Fleming’s Left Hand Rule

   • Direct and alternating current

   • Frequency of AC

   • Advantages of AC over DC

   • Domestic electric circuits

Unit V: Natural Resources

Theme: Natural Resources (Weightage: 5 Marks)

Topics:

1. Our Environment

   • Ecosystem

   • Environmental problems

   • Ozone depletion

   • Waste production and solutions

   • Biodegradable and non-biodegradable substances

Students can click on the link below to download the CBSE Class 10 Science Syllabus PDF for 2026-27 session:

CBSE Class 10 Science Syllabus 2026–27 provides a clear roadmap for effective preparation and better understanding of key concepts. Following it properly can help students score well and perform confidently in board exams.

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CBSE Class 10 Syllabus 2026-27