CBSE Class 10 Science Syllabus 2027 (Subject Code 086) has been released by the Central Board of Secondary Education for the 2026-27 academic session. It is a 100-mark course – 80 marks theory (Chemical Substances 25, World of Living 25, Natural Phenomena 12, Effects of Current 13, Natural Resources 5) across a 3-hour exam, plus 20 marks Internal Assessment. Download the official CBSE Class 10 Science Syllabus PDF and see the full unit-wise breakdown below.
CBSE Class 10 Science Syllabus 2027 PDF
The complete curriculum is as follows.
CBSE Class 10 Syllabus 2027 Science View Download
CBSE Class 10 Science Syllabus 2027 – Marks Weightage (Unit-wise)
The CBSE Class 10 Science exam carries 100 total marks – 80 for the theory paper (across 5 units) and 20 for Internal Assessment.
| Unit No. | Unit | 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 | 5 |
| Total (Theory) | 80 | |
| – | Internal Assessment | 20 |
| Grand Total | 100 |
CBSE Class 10 Science Syllabus 2027 – Unit-wise Topics
The Class 10 Science curriculum is organised into five units spanning Chemistry, Biology, Physics, and Environmental Science. Key topics under each unit are listed below.
Unit I – Chemical Substances: Nature and Behaviour (25 marks)
Unit II – World of Living (25 marks)
Unit III – Natural Phenomena (12 marks)
Unit IV – Effects of Current (13 marks)
Unit V – Natural Resources (5 marks)
CBSE Class 10 Science Syllabus 2027 – Prescribed Textbook & Practicals
Science is a practical-based subject – the Internal Assessment includes 5 marks for Subject Enrichment (Practical Work). CBSE has prescribed 14 experiments across the five units.
Prescribed Textbooks: Science – Textbook for Class X (NCERT Publication); Assessment of Practical Skills in Science – Class X (CBSE Publication); Laboratory Manual – Science, Class X (NCERT Publication); Exemplar Problems Class X (NCERT Publication); Reading Material – Science, Class X 2026-27 (CBSE). Key practicals include finding pH of samples, studying acid-base reactions, classifying chemical reactions, verifying Ohm’s law, determining focal length of a concave mirror and convex lens, tracing rays through a glass slab/prism, and studying stomata, respiration, binary fission and budding.
CBSE Class 10 Science Syllabus 2027 – Exam Pattern (Question Paper Design)
The CBSE Class 10 Science theory paper (80 marks) is designed around three competency levels, with an internal choice of approximately 33%. The question typology includes VSA/objective questions, Assertion-Reasoning questions, SA, LA, and Source-based/Case-based/Passage-based/Integrated assessment questions.
| Competency | Weightage |
|---|---|
| Demonstrate Knowledge and Understanding | 50% |
| Application of Knowledge/Concepts | 30% |
| Formulate, Analyze, Evaluate and Create | 20% |
| Total (Theory) | 80 marks |
The Internal Assessment (20 marks) is broken down as follows.
| Component | Marks |
|---|---|
| Periodic Assessment | 10 (5 + 5) |
| Subject Enrichment (Practical Work) | 5 |
| Portfolio | 5 |
| Total | 20 |
CBSE Class 10 Science Syllabus 2027 – Continue Your Preparation
Once you have reviewed the syllabus, practice with the CBSE Class 10 Sample Papers and previous years’ CBSE Class 10 Question Papers to prepare for your board exam. You can also refer to NCERT Books for Class 10 and NCERT Solutions for Class 10 for chapter-wise preparation.
Frequently Asked Questions
The CBSE Class 10 Science Syllabus 2027 (Subject Code 086) is the official curriculum released by CBSE for the 2026-27 academic session. It covers five units – Chemical Substances, World of Living, Natural Phenomena, Effects of Current, and Natural Resources – for a total of 100 marks (80 theory plus 20 Internal Assessment).
The subject code for Science in CBSE Class 10 is 086.
The CBSE Class 10 Science theory exam is of 80 marks (3 hours), plus 20 marks for Internal Assessment, making a total of 100 marks.
The prescribed textbook is Science – Textbook for Class X, published by NCERT, along with the Laboratory Manual – Science Class X and Exemplar Problems Class X, both NCERT publications.
CBSE Class 10 Science has 5 units (Chemical Substances 25 marks, World of Living 25 marks, Natural Phenomena 12 marks, Effects of Current 13 marks, and Natural Resources 5 marks) and 14 prescribed practical experiments for Internal Assessment.
CBSE Class 10 Syllabus 2026-27 (All Subjects)
You study more subjects besides Science in 10th class. The subject-wise syllabus for CBSE Class 10 students is as follows.
CBSE Syllabus 2026-27 (Class-wise)
The class-wise syllabus for CBSE board students is as follows.
CBSE Class 10 Science Syllabus 2027 – An Overview
The important things to know about this curriculum are as follows.
| Aspects | Details |
|---|---|
| Education Board | CBSE |
| Class | Class 10 |
| Subject | Science |
| Study Material Here | CBSE Syllabus for Class 10 Science |
| All Curriculum for This Class | CBSE Syllabus for Class 10 |
| All Curriculum for This Board | CBSE Syllabus |
| Full Name of CBSE | Central Board of Secondary Education |
| NCERT Books | NCERT Books for Class 10 |
| NCERT Solutions | NCERT Solutions for Class 10 |
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