Bihar Board Class 10 Science Syllabus 2027: Chapters & Marks
The full BSEB Class 10 Science syllabus for 2027 — Physics, Chemistry and Biology chapters, how the 100 marks split, and which chapters a busy aspirant should finish first.
The Bihar Board Class 10 Science syllabus 2027 at a glance
If you are short on time and unsure what to cover, here is the plain answer: the Bihar Board Class 10 Science syllabus for 2027 has 16 NCERT-based chapters grouped into Chemistry, Biology and Physics. The theory paper carries 80 marks and internal assessment 20 marks, 100 in total. Finish the high-scoring chapters first and you will not feel lost.
As of today, 02 November 2026, BSEB has not released the 2027 date sheet — the latest routine on the official site is still "Matric Exam Routine 2026". The good news for you: the syllabus has not changed, so you can start today. First, see where you stand — Start with the free mock test and note the chapters where you lose marks.
| Component | Marks |
|---|---|
| Theory paper | 80 |
| Internal assessment | 20 |
| Total | 100 |
Roughly half of the 80-mark theory paper is objective (one-mark MCQ-type) and half is subjective (short and long answers). What this means for you: objective questions are the easiest marks to secure, so clear your concepts first, then practise MCQs daily. Always confirm the exact weightage from the official syllabus PDF on the BSEB website.
How many chapters are in BSEB Class 10 Science?
There are 16 chapters, divided almost equally among the three branches. Each branch takes about a third of the theory paper, so you cannot ignore any one of them — skipping a whole branch is where most repeat attempts lose their grade.
| Branch | No. of chapters | Share of theory |
|---|---|---|
| Chemistry | 5 | About one-third |
| Biology | 6 | About one-third |
| Physics | 5 | About one-third |
Chemistry chapters in the Matric Science syllabus
- Chemical Reactions and Equations
- Acids, Bases and Salts
- Metals and Non-metals
- Carbon and its Compounds
- Periodic Classification of Elements
What to watch out for: chemical equations and reaction types fill the objective section. Write and balance 10 equations a day and this branch becomes your safe scoring area.
Biology chapters and their weight
- Life Processes
- Control and Coordination
- How do Organisms Reproduce?
- Heredity and Evolution
- Our Environment
- Management of Natural Resources
Life Processes is the heaviest single chapter and asks diagram-based questions. If you can label a neuron, the heart and the digestive path cleanly, you have already earned several marks.
Physics chapters you must not leave
- Light – Reflection and Refraction
- Human Eye and the Colourful World
- Electricity
- Magnetic Effects of Electric Current
- Sources of Energy
Electricity and Light carry numericals. Hindi-medium students often fear these, but the same three or four formulas repeat every year — learn them once and the numericals become predictable.
Which chapters should you finish first?
When time is tight, chase marks, not chapter order. Start with the chapters that are both high-weight and objective-friendly, then move to the rest.
- Electricity and Light – Reflection and Refraction (Physics) — heavy objective plus fixed numericals.
- Life Processes (Biology) — the single biggest chapter, full of named diagrams.
- Chemical Reactions and Equations and Acids, Bases and Salts (Chemistry) — easy one-mark questions.
- Carbon and its Compounds, Metals and Non-metals, then the remaining Biology and Physics chapters.
What this means for you: by the time you have done these, you have covered most of the objective section across all three branches. Keep Sources of Energy, Our Environment and Management of Natural Resources for the last round — they are short and mostly memory-based.
How is the Science paper marked and how do you practise it?
The theory paper mixes objective and subjective questions, so your revision must do both: understand the concept, then answer under a clock. Reading the NCERT-based text is step one; the marks come from recall and speed.
This is where chapter-wise practice helps. Work through one chapter, then take a short test on only that chapter so you see exactly which idea you forgot. The Bihar Board Class 10 (Matric) — All In One series has 75 tests with full solutions in Hindi and English, so you can check why an answer is right, not just whether it was. For more objective practice, the 50 important VVI Science MCQs with answers and the chapter-wise Matric mock test guide are good next stops.
Common worries — and one step for each
If you have only a few months left: do not try to read every line. Follow the finish-first order above and practise objective questions daily — the objective half is the fastest grade-booster.
If you are afraid of Physics numericals: make one page of all Electricity and Light formulas and solve two numericals a day from that page. Fear drops once you see the same pattern repeat.
If you study alongside a job or family duties: fix one chapter per sitting and end it with a short chapter test. Small, finished pieces beat long, open-ended reading.
For the full subject list and marking across all papers, see the Matric 2027 subjects and marking guide, and keep the Bihar Board Class 10 (Matric) exam page open for updates on the 2027 date sheet.
Your first step today
Do not plan all day — do one thing now. Start with the free mock test, mark the two chapters where you lost the most marks, and tomorrow begin with those from the All In One test series. That single honest check tells you where to spend your limited time.