The CBSE Class 10 Science Syllabus 2026 has been officially released by the board. It covers important concepts from Physics, Chemistry, and Biology that are essential not just for board exams but also for competitive exams like NTSE, Olympiads, and later stages like NEET or JEE (for science stream aspirants). The syllabus includes chapters such as Chemical Reactions, Life Processes, Light – Reflection and Refraction, and many more. Students are expected to study both theory and practicals based on this structure.
I am writing this article because many students and parents find it difficult to keep track of syllabus changes each year. A proper understanding of the syllabus helps in focused preparation and saves time. This guide will help you know what to expect in the exam, how the marks are distributed, and where to download the official PDF file. If you’re preparing for the board exam, the first thing you need is the current syllabus in your hands, and that’s exactly what this article provides in a simple, well-organised format.
CBSE Class 10 Science Syllabus 2026 – Chapter-Wise Details
The Class 10 Science syllabus is divided into three sections: Physics, Chemistry, and Biology. Theory carries 80 marks and internal assessment carries 20 marks.
Unit-wise Weightage
| Unit | Name | Marks |
|---|---|---|
| I | Chemical Substances – Nature and Behaviour | 25 |
| II | World of Living | 25 |
| III | Natural Phenomena | 12 |
| IV | Effects of Current | 13 |
| V | Natural Resources | 05 |
| Total | 80 |
Chemistry Chapters
- Chemical Reactions and Equations
- Acids, Bases and Salts
- Metals and Non-metals
- Carbon and its Compounds
- Periodic Classification of Elements
Biology Chapters
- Life Processes
- Control and Coordination
- How do Organisms Reproduce?
- Heredity and Evolution
- Our Environment
- Management of Natural Resources
Physics Chapters
- Light – Reflection and Refraction
- The Human Eye and the Colourful World
- Electricity
- Magnetic Effects of Electric Current
Internal Assessment – 20 Marks
- Periodic Tests – 5 Marks
- Subject Enrichment (Practical Work) – 5 Marks
- Portfolio – 5 Marks
- Notebook Submission – 5 Marks
CBSE has also provided a list of experiments that must be performed in the school lab. These practicals are evaluated in the internal marks, and they are important for understanding the concepts better.
Download PDF – CBSE Class 10 Science Syllabus 2026
You can download the official syllabus PDF easily from the CBSE academic website.
Steps to Download:
- Go to https://cbseacademic.nic.in
- Click on Curriculum
- Select Secondary Curriculum
- Choose Class 10 and click on Science
- Download the 2026 PDF file for Science
N.B: If you want to download the PDF then, CLICK HERE.
Final Thoughts
Science is a subject where clarity of concepts is very important. The 2026 syllabus helps you understand what to focus on and how much weight each chapter carries. Once you have the syllabus, prepare a chapter-wise study plan and revise regularly. Whether you want to score well in boards or build your basics for higher classes, following the syllabus strictly will always keep you on the right track. Keep a printout of the PDF for easy reference during your prep.
