CBSE Class 10 Science Syllabus 2026, Download PDF

CBSE Class 10 Science Syllabus 2025-26

CBSE Class 10 Science Syllabus 2025-26: The Central Board of Secondary Education, CBSE has released the detailed and revised CBSE Class 10 Science Syllabus 2025-26 for the academic session 2025-26 at the official website www.cbseacademic.nic.in. With the release of CBSE 10th Science Syllabus 2025-26, the students should get familiarized with the curriculum and start preparing themselves for CBSE Board Exams. As officially notified, CBSE conducts a single annual examination at the end of the session and no term-wise tests or examinations will be conducted further. The CBSE Class 10 Science Syllabus 2024-25 comprises 5 major units which have been explained below for the reference of class 10 students.

CBSE 10th Science Syllabus 2025-26

In Class 10 CBSE, Science is a key subject, covering Physics, Chemistry, and Biology. The 2024-25 syllabus is important as it helps students plan for their board exams. The topics include Food, Materials, Living Things, How Things Work, Movement, People, Ideas, Natural Events, and Resources. The syllabus is designed to develop scientific skills in students, helping them use their knowledge to improve society. Learning Science in-depth builds abilities in thinking, feeling, and doing. It encourages curiosity, creativity, clear thinking, and appreciation of beauty in science. Knowing the syllabus well will help students understand the subject better and perform well in exams, while also preparing them to apply science in practical ways for the future.

CBSE Class 10 Science Syllabus 2025-26

CBSE has officially released the subject-wise curriculum for Class 10 students on its website, www.cbseacademic.nic.in. The updated syllabus for the 2024-25 academic year is now available. The Science syllabus includes five units, each carrying specific marks. A detailed table showing the unit names and their marks has been provided below. This syllabus will help students understand the topics they need to study and prepare well for their exams. By following this curriculum, students can focus on important concepts and perform better in their Science exams. Check the table below for a clear breakdown of marks for each unit.

CBSE 10th Science Syllabus 2025-26

As per the official PDF notification that has been released recently at www.cbseacademic.nic.in, each unit comprises of few chapters and students can know the weightage of chapters through CBSE 10th Science Syllabus 2024-25 while confronting their final board exams.  Have a look at the chapter-wise CBSE Class 10 Science Syllabus 2024-25 as listed below-

Unit I: Chemical Substances - Nature and Behaviour

Chapter- 1 Chemical Reactions

1. Chemical equation
2. Balanced chemical equation, Implications of a balanced chemical equation
3. Types of chemical reactions- Combination, decomposition, displacement, double displacement, precipitation, endothermic exothermic reactions, oxidation, and reduction

Chapter 2 Acids, bases, and salts

1. Their definitions in terms of furnishing of H+ and OH– ions,
2. General properties, examples and uses, neutralization, the concept of pH scale (Definition relating to logarithm not required),
3. Importance of pH in everyday life
4. Preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris

Chapter-3 Metals & Non-metals

1. Properties of metals and non-metals
2. Reactivity series
3. Formation and properties of ionic compounds
4. Basic metallurgical processes
5. Corrosion and its prevention.

Chapter-4 Carbon compounds

1. Covalent bonding in carbon compounds
2. Versatile nature of carbon
3. Homologous series
4. Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes)
5. Difference between saturated hydro carbons and unsaturated hydrocarbons.
6. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction).
7. Ethanol and Ethanoic acid (only properties and uses)
8. Soaps and detergents.

Unit II: World of Living

Chapter-5 Life Processes

‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in plants and animals

Chapter-6 Control and co-ordination in animals and plants

1. Tropic movements in plants
2. Introduction of plant hormones
3. Control and co-ordination in animals: Nervous system
4. Voluntary, involuntary and reflex action
5. Chemical co-ordination: animal hormones

Chapter-7 Reproduction

1. Reproduction in animals and plants (asexual and sexual) reproductive health-need and methods of family planning.
2. Safe sex vs HIV/AIDS
3. Childbearing
4. Women’s health

Chapter-8 Heredity and Evolution

1. Heredity; Mendel’s contribution-  Laws for inheritance of traits
2. Sex determination: brief introduction; (topics excluded - evolution; evolution and classification and evolution should not be equated with progress).

Unit III: Natural Phenomena

Chapter-9 Reflection & Refraction

1. Reflection of light by curved surfaces; Images formed by spherical mirrors, center of curvature, principal axis, principal focus, focal length, mirror formula (Derivation not required), magnification. Refraction; Laws of refraction, refractive index.
2. Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula(Derivation not required); Magnification. Power of a lens.
3. Functioning of a lens in the human eye, defects of vision and their corrections, and applications of spherical mirrors and lenses.
4. Refraction of light through a prism, dispersion of light, scattering of light, and applications in daily life (excluding the color of the sun at sunrise and sunset).

Unit IV: Effects of Current

Chapter-10 Electricity Ohm’s law; 

1. Electric current, potential difference, and electric current.
2. Ohm’s law
3. Resistance, Resistivity, and Factors on which the resistance of a conductor depends.
4. Series combination of resistors, parallel combination of resistors, and its applications in daily life.
5. Heating effect of electric current and its applications in daily life.
6. Electric power
7. Interrelation between P, V, I, and R.

Chapter-11 Magnetic effects of current 

1. Magnetic field, field lines, field due to a current-carrying conductor, field due to current carrying coil or solenoid
2. Force on a current-carrying conductor
3. Fleming’s Left Hand Rule
4. Direct current
5. Alternating current: frequency of AC
6. Advantage of AC over DC
7. Domestic electric circuits.

Unit V: Natural Resources

Chapter-12 Our Environment 

1. Eco-system,
2. Environmental problems
3. Ozone depletion
4. Waste production and their solutions
5. Biodegradable and non-biodegradable substances

Check :- CBSE Class 10 Result 2025

CBSE Class 10th Science Syllabus 2025-26 PDF Download Link

All the class 10th students appearing for the upcoming CBSE Class 10th Science Board exam for the academic session 2025-26 can check and download their detailed syllabus by visiting the official website of the Central Board of Secondary Education. Students can also check the detailed CBSE Class 10th syllabus for Science by simply clicking on the direct link shared below. Students can also get an idea of the additional information on the exam pattern, question paper design, projects, assignments, and practicals to be conducted throughout the year with the help of the CBSE Class 10th Science Syllabus 2025.

CBSE Class 10 Science Syllabus 2024-25 PDF- Click to Download

CBSE Class 10 Science Syllabus- General Instructions

1. The total Theory Examinations will be 80 marks and 20 marks weightage shall be for Internal Assessment. 

2. Internal Assessment - Maximum Marks 20 

3. Subject Enrichment in the form of Practical/Laboratory work should be done throughout the year and the student should maintain a record of the same. Practical Assessment should be continuous. All practicals listed in the syllabus must be completed.

4. Portfolio to be prepared by the student- This would include classwork and other samples of student work.