CBSE Class 12 Syllabus 2026-27 has been released by the Central Board of Secondary Education (CBSE) on April 1, 2026, at cbseacademic.nic.in. The syllabus covers Science, Commerce, and Humanities streams with subject-wise unit lists, marks distribution, and practical details for the 2027 board examinations. You should download the official subject-wise PDF immediately and align your preparation with the prescribed units — particularly if you are studying Computer Science, which has updated unit structure and Python programming emphasis for 2026-27.
- The CBSE Class 12 syllabus 2026-27 covers over 35 subjects across Science, Commerce, Humanities, and Skill Education streams; official PDFs are available at cbseacademic.nic.in.
- Science subjects — Physics, Chemistry, Biology — carry 70 marks for theory and 30 marks for practicals; Mathematics and English Core carry 80 marks theory and 20 marks internal assessment.
- The Computer Science syllabus 2026-27 is structured across three units: Computational Thinking and Programming-2 (40 marks), Computer Networks (10 marks), and Database Management (20 marks), with 30 marks for practical.
- 50% of questions in the 2027 board papers will be competency-based — case-based, source-based, and application-type questions — so NCERT reading alone is not sufficient.
- CBSE now offers a twice-a-year board exam format: you can appear in February (Session 1) and again in May (Session 2), and your better score is the final result.
- The syllabus follows the rationalized NCERT curriculum; topics removed in earlier sessions remain excluded in 2026-27.
- The CBSE Class 12 board exam 2027 date sheet has not yet been released as of August 2026 — it is expected in October–November 2026 at cbse.gov.in.
Download the CBSE Class 12 Syllabus 2026-27 PDF today, note the deleted topics for each subject, and structure your study schedule around the official unit weightage.
CBSE Class 12 Syllabus 2026-27: Download Subject-wise PDFs
CBSE published the 2026-27 syllabus for all Class 12 subjects on April 1, 2026. You can access subject-wise PDFs directly from the CBSE academic portal — each PDF includes the unit list, prescribed textbooks, practicals or projects, and question paper design.
| Subject | CBSE Class 12 Syllabus PDF 2026-27 |
|---|---|
| English Core | CBSE Class 12 English Core Syllabus PDF |
| Mathematics | CBSE Class 12 Mathematics Syllabus PDF |
| Physics | CBSE Class 12 Physics Syllabus PDF |
| Chemistry | CBSE Class 12 Chemistry Syllabus PDF |
| Biology | CBSE Class 12 Biology Syllabus PDF |
| Computer Science | CBSE Class 12 Computer Science Syllabus PDF |
| Informatics Practices | CBSE Class 12 Informatics Practices Syllabus PDF |
| Accountancy | CBSE Class 12 Accountancy Syllabus PDF |
| Business Studies | CBSE Class 12 Business Studies Syllabus PDF |
| Economics | CBSE Class 12 Economics Syllabus PDF |
| History | CBSE Class 12 History Syllabus PDF |
| Political Science | CBSE Class 12 Political Science Syllabus PDF |
| Geography | CBSE Class 12 Geography Syllabus PDF |
CBSE Class 12 Syllabus 2026-27: Overview
The CBSE Class 12 syllabus is prescribed by the Central Board of Secondary Education for students in the senior secondary stage across Science, Commerce, and Humanities streams. The 2026-27 syllabus follows the rationalized NCERT curriculum and gives 50% weightage to competency-based questions in every board paper.
| Parameter | Details |
|---|---|
| Board | Central Board of Secondary Education (CBSE) |
| Class | Class XII (Senior Secondary) |
| Academic Year | 2026-27 |
| Board Exam Year | 2027 |
| Syllabus Basis | Rationalized NCERT Textbooks (Class 11 and 12) |
| Official Website | cbse.gov.in / cbseacademic.nic.in |
| Streams Covered | Science, Commerce, Humanities, Skill Education |
| Exam Sessions | Two per year — February (Session 1) and May (Session 2) |
| Theory + Practical Split | Science subjects: 70+30 | Mathematics, English, Commerce: 80+20 |
| Question Paper Design | 50% Competency-based | 20% Select Response (MCQs) | 30% Constructed Response |
| Passing Marks | 33% aggregate in each subject |
| Duration | 3 hours per theory paper |
| Syllabus Released | April 1, 2026 |
CBSE Class 12 Important Dates 2027
The CBSE Class 12 board exam 2027 date sheet has not been released as of August 2026. Based on previous years, CBSE typically releases the official timetable in October or November — bookmark cbse.gov.in and check back from October 2026 onwards.
| Event | Expected Date | Status |
|---|---|---|
| Date Sheet 2027 Release | October–November 2026 | Upcoming |
| Practical Exams 2027 (Regular Schools) | January–February 2027 | Upcoming |
| Theory Board Exams 2027 (Session 1) | February–April 2027 | Upcoming |
| Theory Board Exams 2027 (Session 2 / Improvement) | May 2027 | Upcoming |
| CBSE Class 12 Result 2027 | May–June 2027 | Upcoming |
| Compartment Exams 2027 | July 2027 | Upcoming |
| CBSE Class 12 Syllabus 2026-27 Released | April 1, 2026 | Over |
| Academic Session 2026-27 Commenced | April 2026 | Over |
Note: Practical exams for winter-bound schools may begin in November–December 2026.
CBSE Class 12 Computer Science Syllabus 2027
The CBSE Class 12 Computer Science syllabus 2026-27 (Subject Code 083) covers Python programming, data structures, computer networks, and database management using SQL. The theory paper carries 70 marks and the practical carries 30 marks — Unit 1 alone (Computational Thinking and Programming-2) accounts for 40 of the 70 theory marks, making Python the single most important area for this subject. The updated syllabus for 2026-27 gives heightened emphasis to file handling, exception handling, and Python-SQL integration.
| Unit No. | Unit Name | Topics Covered | Marks (Theory) |
|---|---|---|---|
| 1 | Computational Thinking and Programming – 2 | Python Programming Topics - Click Here Python Revision (from Class XI): Data types, variables, operators, control structures, lists, tuples, dictionaries, sets — brief recap only. | 40 |
| 2 | Computer Networks | Networking Topics - Click Here Evolution of Networking: ARPANET, NSFNET, Internet — timeline and significance. | 10 |
| 3 | Database Management | DBMS and SQL Topics - Click Here Database Concepts: Introduction to DBMS; advantages over file-based systems; relational data model; keys — primary, candidate, foreign; relationships. | 20 |
CBSE Class 12 Computer Science Unit-wise Weightage 2027
| Unit | Unit Name | Theory Marks |
|---|---|---|
| 1 | Computational Thinking and Programming – 2 | 40 |
| 2 | Computer Networks | 10 |
| 3 | Database Management | 20 |
| Total Theory | – | 70 |
| Practical: Lab Test – Python (8) + Lab Test – SQL (4) + Report/Record File (7) + Project (8) + Viva Voce (3) | 30 | |
| Grand Total | – | 100 |
For the practical examination, you must maintain a minimum of 15 Python programs, at least 5 SQL query sets, and at least 4 Python-SQL connectivity programs in your record file.
CBSE Class 12 English Core Syllabus 2027
The CBSE Class 12 English Core syllabus (Subject Code 301) carries 80 marks theory and 20 marks internal assessment. The Literature section carries the highest marks at 40 — you must read every prescribed prose and poem in Flamingo and Vistas carefully, not just summaries.
| Section | Area | Topics Covered | Marks |
|---|---|---|---|
| A | Reading Skills | Two unseen passages (one factual, one discursive); note-making and abstraction; MCQs, short answer, and long answer questions | 20 |
| B | Writing Skills and Grammar | Writing and Grammar Topics - Click Here Notice / Advertisement writing; Article writing; Report writing; Formal letter writing; Grammar — Determiners, Tenses, Clauses, Modals, Active/Passive Voice, Direct/Indirect Narration. | 20 |
| C | Literature — Textbooks | Flamingo and Vistas Prescribed Texts - Click Here Flamingo (Prose): The Last Lesson; Lost Spring; Deep Water; The Rattrap; Indigo; Poets and Pancakes; The Interview; Going Places. | 40 |
| – | Internal Assessment | Periodic Tests (10) + Speaking and Listening Activities (5) + Portfolio (5) | 20 |
CBSE Class 12 Mathematics Syllabus 2027
The CBSE Class 12 Mathematics syllabus (Subject Code 041) consists of 6 units and 13 chapters. Theory carries 80 marks; internal assessment carries 20 marks — Calculus alone accounts for 35 of those 80 theory marks, making it the most critical unit for board exam preparation.
| Unit | Unit Name | Key Topics | Marks |
|---|---|---|---|
| I | Relations and Functions | Unit I Topics - Click Here Types of relations; composite functions; inverse functions; inverse trigonometric functions — definition, range, domain, principal value branches; graphs and properties. | 8 |
| II | Algebra | Unit II Topics - Click Here Matrices — types, operations, transpose, symmetric and skew-symmetric, invertible; elementary transformations; Determinants — properties, cofactors, adjoint, applications in area and system of equations. | 10 |
| III | Calculus | Unit III Topics - Click Here Continuity and differentiability; chain rule; implicit and logarithmic differentiation; Rolle’s and Mean Value Theorems; increasing/decreasing functions; tangents, normals, maxima and minima; integration — substitution, partial fractions, by parts; definite integrals; area under curves; differential equations — variable separable, homogeneous, linear first-order. | 35 |
| IV | Vectors and Three-Dimensional Geometry | Vectors — dot and cross products; direction cosines; equations of lines and planes in 3D; shortest distance; angle between line and plane | 14 |
| V | Linear Programming | Formulation of LPP; graphical method; feasible region; corner-point method; types of problems | 5 |
| VI | Probability | Conditional probability; multiplication theorem; Bayes’ theorem; random variable; binomial distribution | 8 |
CBSE Class 12 Mathematics Unit-wise Weightage 2027
| Unit | Name | Marks (Theory) |
|---|---|---|
| I | Relations and Functions | 8 |
| II | Algebra | 10 |
| III | Calculus | 35 |
| IV | Vectors and Three-Dimensional Geometry | 14 |
| V | Linear Programming | 5 |
| VI | Probability | 8 |
| Total Theory | – | 80 |
| Internal Assessment | Periodic Tests (10) + Math Activities (5) + Portfolio (5) | 20 |
| Grand Total | – | 100 |
CBSE Class 12 Physics Syllabus 2027
The CBSE Class 12 Physics syllabus (Subject Code 042) covers 9 units and 14 chapters. Theory carries 70 marks; practical carries 30 marks — the EM Waves and Optics group carries 18 marks, the highest of any group, and should be your top priority alongside Electrostatics. Communication Systems was removed during rationalization and remains excluded.
| Unit | Unit Name | Chapters | Key Topics |
|---|---|---|---|
| I | Electrostatics | Ch 1–2 | Unit I Topics - Click Here Electric charge; Coulomb’s law; electric field and field lines; electric flux; Gauss’s theorem; electrostatic potential; equipotential surfaces; capacitance; combination of capacitors; energy stored; dielectrics. |
| II | Current Electricity | Ch 3 | Drift velocity; Ohm’s law; temperature dependence; Kirchhoff’s laws; Wheatstone bridge; potentiometer |
| III | Magnetic Effects of Current and Magnetism | Ch 4–5 | Biot-Savart law; Ampere’s law; cyclotron; galvanometer; bar magnet; Earth’s magnetism; dia/para/ferromagnetism |
| IV | Electromagnetic Induction and Alternating Currents | Ch 6–7 | Faraday’s laws; Lenz’s law; AC generator; series LCR; resonance; power factor; transformer |
| V | Electromagnetic Waves | Ch 8 | Displacement current; EM wave characteristics; EM spectrum uses |
| VI | Optics | Ch 9–10 | Unit VI Topics - Click Here Reflection; refraction; total internal reflection; lenses and mirrors; optical instruments; wavefront; Huygens’ principle; interference — Young’s double slit experiment; diffraction; polarization; Brewster’s law; Malus’s law. |
| VII | Dual Nature of Radiation and Matter | Ch 11 | Photoelectric effect; Einstein’s equation; de Broglie relation; Davisson-Germer experiment |
| VIII | Atoms and Nuclei | Ch 12–13 | Rutherford and Bohr models; hydrogen spectrum; binding energy; radioactivity; nuclear fission and fusion |
| IX | Electronic Devices | Ch 14 | Energy bands; p-n junction; diode as rectifier; Zener diode; transistor as amplifier and switch; logic gates |
CBSE Class 12 Physics Unit-wise Weightage 2027
| Unit Group | Units Covered | Marks (Theory — 70 Total) |
|---|---|---|
| Group 1 | Electrostatics + Current Electricity | 16 |
| Group 2 | Magnetic Effects + EM Induction and AC | 17 |
| Group 3 | EM Waves + Optics | 18 |
| Group 4 | Dual Nature + Atoms and Nuclei | 12 |
| Group 5 | Electronic Devices | 7 |
| Practical | Experiments + Record + Activities + Viva | 30 |
| Grand Total | – | 100 |
CBSE Class 12 Chemistry Syllabus 2027
The CBSE Class 12 Chemistry syllabus (Subject Code 043) covers 10 chapters. Theory carries 70 marks; practical carries 30 marks — Electrochemistry (9 marks) and Aldehydes, Ketones and Carboxylic Acids (8 marks) are the two highest-yield chapters. Solid State, p-Block Elements (Groups 16–18), and Surface Chemistry remain excluded from the 2026-27 examination.
| Chapter | Name | Key Topics | Marks |
|---|---|---|---|
| 1 | Solutions | Concentration terms; Raoult’s law; colligative properties; Van’t Hoff factor | 7 |
| 2 | Electrochemistry | Electrochemistry Topics - Click Here Electrochemical cells; EMF; standard electrode potential; Nernst equation; Kohlrausch’s law; electrolysis; Faraday’s laws; fuel cells; corrosion. | 9 |
| 3 | Chemical Kinetics | Rate of reaction; order and molecularity; integrated rate equations; Arrhenius equation; activation energy | 7 |
| 4 | d- and f-Block Elements | Transition element properties; K₂Cr₂O₇ and KMnO₄; lanthanoids; actinoids | 7 |
| 5 | Coordination Compounds | Werner’s theory; IUPAC nomenclature; isomerism; VBT; CFT; colour and magnetic properties | 7 |
| 6 | Haloalkanes and Haloarenes | SN1 and SN2 mechanisms; elimination; DDT and environmental effects | 6 |
| 7 | Alcohols, Phenols and Ethers | Dehydration; acidic nature of phenol; Williamson synthesis | 6 |
| 8 | Aldehydes, Ketones and Carboxylic Acids | Organic Reactions - Click Here Nucleophilic addition; Cannizzaro reaction; aldol condensation; oxidation; carboxylic acid reactions; esterification; Hell-Volhard-Zelinsky reaction. | 8 |
| 9 | Amines | Basicity comparison; diazonium salts; Gabriel synthesis; Hoffmann bromamide degradation | 6 |
| 10 | Biomolecules | Carbohydrates; proteins; vitamins; nucleic acids | 7 |
CBSE Class 12 Chemistry Chapter-wise Weightage 2027
| Chapter | Marks |
|---|---|
| Solutions | 7 |
| Electrochemistry | 9 |
| Chemical Kinetics | 7 |
| d- and f-Block Elements | 7 |
| Coordination Compounds | 7 |
| Haloalkanes and Haloarenes | 6 |
| Alcohols, Phenols and Ethers | 6 |
| Aldehydes, Ketones and Carboxylic Acids | 8 |
| Amines | 6 |
| Biomolecules | 7 |
| Total Theory | 70 |
| Practical | 30 |
| Grand Total | 100 |
CBSE Class 12 Biology Syllabus 2027
The CBSE Class 12 Biology syllabus (Subject Code 044) is unchanged from the previous session. It covers 5 units from NCERT Biology Class 12. Theory carries 70 marks; practicals carry 30 marks — Genetics and Evolution (18 marks) is the highest-weightage unit and is critical for both board exams and NEET preparation.
| Unit | Unit Name | Key Topics |
|---|---|---|
| VI | Reproduction | Reproduction Topics - Click Here Sexual reproduction in flowering plants — pollination, fertilisation, seed and fruit development; human reproduction — gametogenesis, menstrual cycle, fertilisation, pregnancy, parturition; reproductive health — birth control, STDs, infertility. |
| VII | Genetics and Evolution | Genetics and Evolution Topics - Click Here Mendel’s laws; co-dominance; sex determination; chromosomal disorders; DNA structure and replication; transcription; translation; genetic code; lac operon; Human Genome Project; DNA fingerprinting; Darwin’s theory; Hardy-Weinberg principle; speciation. |
| VIII | Biology and Human Welfare | Human health and disease; immunity; vaccines; cancer; AIDS; microbes in biogas, sewage treatment, antibiotics; biofertilizers and biocontrol agents |
| IX | Biotechnology and Its Applications | Recombinant DNA technology; PCR; gel electrophoresis; Bt cotton; insulin production; gene therapy; ethical issues |
| X | Ecology and Environment | Population interactions; logistic growth; ecosystem energy flow; nutrient cycling; biodiversity conservation; environmental pollution; ozone depletion; global warming |
CBSE Class 12 Biology Unit-wise Weightage 2027
| Unit | Name | Marks (Theory — 70 Total) |
|---|---|---|
| VI | Reproduction | 17 |
| VII | Genetics and Evolution | 18 |
| VIII | Biology and Human Welfare | 12 |
| IX | Biotechnology and Its Applications | 12 |
| X | Ecology and Environment | 11 |
| Practical | Experiments + Spotting + Record + Viva | 30 |
| Grand Total | – | 100 |
CBSE Class 12 Commerce Stream Syllabus 2027
Commerce stream students take Accountancy, Business Studies, and Economics as core subjects. All three carry 80 marks theory and 20 marks project work — start your project in the first month of the session rather than rushing it close to submission deadlines.
| Subject | Part | Key Topics | Theory Marks |
|---|---|---|---|
| Accountancy | Part A: Partnership and Company Accounts | Not-for-Profit Organisations; Partnership — admission, retirement, death, dissolution; shares — issue, forfeiture, reissue; debentures; Cash Flow Statement | 60 |
| Part B: Financial Statement Analysis | Financial statements of companies; comparative and common-size statements; ratio analysis; cash flow statement interpretation | 20 | |
| Business Studies | Part A: Principles and Functions of Management | Nature of management; Fayol and Taylor principles; business environment; planning; organising; staffing; directing — motivation, leadership, communication; controlling | 40 |
| Part B: Business Finance and Marketing | Financial management; capital markets; SEBI; marketing mix; product life cycle; consumer protection | 40 | |
| Economics | Part A: Introductory Macroeconomics | National income aggregates; money and banking; aggregate demand and supply; government budget; balance of payments | 40 |
| Part B: Indian Economic Development | Development experience 1947–1990; economic reforms since 1991 (LPG); poverty; human capital; rural development; India-China-Pakistan comparison | 40 |
CBSE Class 12 Deleted / Reduced Topics 2026-27
CBSE rationalized the Class 12 curriculum from 2022-23 to reduce overlapping content. Topics excluded in earlier sessions remain out of scope for 2026-27 — download the official subject PDF from cbseacademic.nic.in to see the exact sub-topic exclusions for each subject.
| Subject | Topics / Chapters Removed or Reduced |
|---|---|
| Physics | Communication Systems (former Chapter 15) fully removed; complex derivations for mirror formula and carbon resistor colour coding excluded |
| Chemistry | Solid State (former Ch 1); p-Block Elements Groups 16, 17, 18 (former Ch 7); Surface Chemistry (former Ch 5); General Principles and Processes of Isolation of Elements |
| Mathematics | Specific inverse trigonometric function graph topics; some theorem proofs in determinants Section 4.3 |
| Computer Science | Queue data structure removed from Class 12 scope; Society, Law and Ethics restructured into integrated content rather than a standalone unit |
| History | Chapter 9: The Mughal Court; Chapter 12: Colonialism and Indian Towns; Chapter 14: Partition through Oral Sources — all fully removed |
| Biology | No changes for 2026-27; all 5 units and 15 chapters remain in scope |
| Economics | Some infrastructure-related sub-sections and rural development topics reduced in scope |
CBSE Class 12 Exam Pattern 2026-27
The CBSE Class 12 board exam pattern 2026-27 is structured around competency-based education. Half of every theory paper tests application, analysis, and evaluation — so practise case-based and source-based questions from each chapter throughout the session, not just in the final weeks.
| Parameter | Details |
|---|---|
| Total Marks | 100 per subject |
| Theory Duration | 3 hours |
| Theory Marks | Science: 70 | Mathematics, English, Commerce: 80 |
| Practical / IA / Project | Science: 30 marks | Others: 20 marks |
| Passing Marks | 33% aggregate per subject |
| Board Exam Sessions | Session 1 (February 2027) + Session 2 (May 2027) — best score retained |
| Question Category | Question Types | Weightage |
|---|---|---|
| Competency-Based Questions | Case-based, source-based, passage-based, data-based | 50% |
| Select Response Questions | MCQs, Assertion-Reason | 20% |
| Constructed Response Questions | Short answer (2–3 marks), Long answer (5 marks) | 30% |
Best Books for CBSE Class 12 2027
NCERT textbooks are mandatory for CBSE Class 12 — the board frames questions directly from NCERT content, examples, and exercises. Use reference books only after completing NCERT thoroughly for each subject.
| Subject | Book Name | Author / Publisher | Why This Book |
|---|---|---|---|
| Mathematics | NCERT Mathematics Class 12 (Part I and II) | NCERT | Primary source; most board questions are direct NCERT problems |
| Mathematics | Mathematics Class 12 (Vol. 1 and 2) | R.D. Sharma / Dhanpat Rai | Extensive graded problem sets; strong on Calculus and Algebra |
| Physics | NCERT Physics Class 12 (Part I and II) | NCERT | Mandatory; derivations and examples are directly asked in board paper |
| Physics | Concepts of Physics (Vol. 1 and 2) | H.C. Verma / Bharati Bhawan | Conceptual clarity and numericals beyond NCERT level |
| Chemistry | NCERT Chemistry Class 12 (Part I and II) | NCERT | All reaction mechanisms and Organic Chemistry tested from NCERT only |
| Chemistry | Modern’s ABC of Chemistry Class 12 | S.P. Jauhar / Modern Publishers | Named reactions and mechanisms coverage; good for Organic units |
| Biology | NCERT Biology Class 12 | NCERT | Board diagrams and questions come directly from this book |
| Biology | Trueman’s Elementary Biology (Vol. 2) | K.N. Bhatia / Trueman’s | Detailed diagrams for Genetics and Biotechnology units |
| Computer Science | NCERT Computer Science with Python Class 12 | NCERT | Official textbook; programs and SQL queries are exam-ready |
| Computer Science | Computer Science with Python (Class 12) | Sumita Arora / Dhanpat Rai | Largest collection of Python programs, SQL exercises, and Python-SQL connectivity examples |
| Accountancy | Double Entry Book Keeping (Class 12) | T.S. Grewal / Sultan Chand | Gold standard; covers Partnership and Company Accounts exhaustively |
| Economics | NCERT Introductory Macroeconomics + Indian Economic Development | NCERT | Primary resource; board questions trace directly to NCERT text |
| English | Flamingo and Vistas | NCERT | All literature questions originate from these two books; no substitute |
How to Download CBSE Class 12 Syllabus 2026-27 PDF
Follow these steps to download the official CBSE Class 12 syllabus PDF from the CBSE academic portal.
- Visit the official CBSE academic website at cbseacademic.nic.in.
- Click on "Curriculum" in the navigation menu.
- Select "Senior Secondary Curriculum (Classes XI–XII)".
- Open the "2026-27" curriculum link.
- Click on your subject name — the PDF opens in a new browser tab.
- Press Ctrl + S (Windows) or Cmd + S (Mac) to save, or use the download icon in your PDF viewer.
Download only from cbseacademic.nic.in or cbse.gov.in — third-party sites may carry outdated syllabus versions.
CBSE Class 12 Syllabus Preparation Tips 2027
Board exams 2027 are expected from February to April 2027. Starting your revision in August 2026 gives you approximately six months and at least two complete revision cycles before Session 1.
Computer Science
- Unit 1 carries 40 out of 70 theory marks — Python file handling, exception handling, and functions must be practised by writing and running programs, not just reading about them.
- For SQL, practise writing complete multi-table JOIN queries and aggregate functions with GROUP BY and HAVING from scratch — board questions always require full SQL, not just conceptual answers.
- Python-SQL connectivity is tested in every practical: master the mysql.connector connection-execute-fetch-commit-close workflow with at least 4 complete programs.
- Computer Networks (10 marks) is mostly definition-based — make a single-page note on protocols, topologies, and network devices for quick pre-exam revision.
- Choose a Python-SQL project (library, school, or inventory management system) to demonstrate all three units in one application — this earns consistent marks across project and viva.
Mathematics
- Spend at least 40% of your Mathematics study time on Calculus — 35 out of 80 theory marks come from five chapters in this single unit.
- Solve every NCERT example and exercise; board papers directly reuse NCERT problems or make minor variations.
- Vectors and 3D Geometry (14 marks) is formula-heavy — maintain a dedicated formula sheet and revise it weekly.
- Linear Programming is 5 easy marks for one chapter; prepare it last to maximise effort-to-reward ratio.
Physics
- Optics and EM Waves (18 marks combined) and the Electrostatics-Current Electricity group (16 marks) should be your first two priorities.
- Write out all NCERT derivations weekly — Physics board papers consistently include 3–4 derivation-based questions.
- Electronic Devices (7 marks) is concept-light; prepare it after the high-weightage unit groups.
Chemistry
- Know all named reactions — Cannizzaro, Aldol, Hoffmann, Williamson, Gabriel — by mechanism, not just name; CBSE tests the full mechanism in 3-mark questions.
- Electrochemistry (9 marks) includes numericals; practise Nernst equation and Kohlrausch’s law calculations regularly.
- Biomolecules is factual and reliably high-scoring; cover it in a single focused session close to the exam.
Biology
- Genetics and Evolution (18 marks) requires deep conceptual study — Punnett squares, lac operon, and molecular basis of inheritance are asked every year.
- Draw and label NCERT diagrams for every chapter; at least 5 marks per board paper are diagram-based.
- Molecular Basis of Inheritance is the single highest-yield chapter — cover replication, transcription, translation, and the genetic code table completely before all other chapters.
CBSE Class 12 Syllabus 2026-27 FAQs
Ques. Has the CBSE Class 12 syllabus for 2026-27 been released?
Ans. Yes. CBSE released the Class 12 syllabus 2026-27 on April 1, 2026, at cbseacademic.nic.in. Subject-wise PDFs for all streams — Science, Commerce, and Humanities — are available for download. This syllabus governs the 2027 board examinations.
Ques. Is the CBSE Class 12 syllabus 2026-27 the same as last year?
Ans. For most subjects the 2026-27 syllabus is consistent with 2025-26. Biology is explicitly unchanged — all 5 units and 15 chapters remain in scope. Computer Science retains the same three-unit structure with continued emphasis on Python file handling, exception handling, and SQL. Download the official PDF for each subject to confirm any sub-topic exclusions.
Ques. What is covered in the CBSE Class 12 Computer Science syllabus 2026-27?
Ans. The CBSE Class 12 Computer Science syllabus 2026-27 has three units: Unit 1 — Computational Thinking and Programming-2 (Python functions, exception handling, file handling, stacks — 40 marks theory); Unit 2 — Computer Networks (networking concepts, protocols, topologies, web services — 10 marks theory); Unit 3 — Database Management (SQL DDL/DML, joins, aggregate functions, Python-SQL connectivity — 20 marks theory). Theory total is 70 marks; practical is 30 marks covering lab tests, record file, project, and viva.
Ques. Which unit carries the highest marks in each CBSE Class 12 Science subject?
Ans. In Mathematics, Calculus carries 35 out of 80 marks — the highest of any unit. In Physics, the EM Waves and Optics group carries 18 out of 70 marks. In Biology, Genetics and Evolution carries 18 out of 70 marks. In Chemistry, Electrochemistry carries 9 marks and is the single highest-weightage chapter. In Computer Science, Unit 1 carries 40 out of 70 marks.
Ques. Is NCERT enough to score 90+ in CBSE Class 12 boards 2027?
Ans. Yes, NCERT is the foundation and sufficient for most subjects to score 90+. You must read every line, solve every NCERT exercise and in-text example, and practise all NCERT diagrams. For Mathematics numericals and Physics derivations, supplement with R.D. Sharma and H.C. Verma respectively after completing NCERT. For Computer Science, practice Python programs from NCERT and Sumita Arora side by side.
Ques. When will the CBSE Class 12 date sheet 2027 be released?
Ans. As of August 2026, CBSE has not yet released the Class 12 date sheet for 2027 board exams. Based on previous years, the board typically releases the timetable in October or November. Theory exams are expected to run from February to April 2027. Visit cbse.gov.in from October 2026 to download the official schedule.
Ques. What is the exam pattern for CBSE Class 12 boards in 2027?
Ans. CBSE Class 12 board exams 2027 follow a competency-based pattern: 50% marks are competency-based questions (case-based, source-based), 20% are MCQs and assertion-reason questions, and 30% are short and long answer questions. Science theory papers are 70 marks (3 hours) with 30 marks practical. Mathematics and English are 80 marks theory with 20 marks internal assessment.
Ques. Can CBSE students appear for Class 12 board exams twice in 2027?
Ans. Yes. CBSE offers a twice-a-year board exam option. You can appear in Session 1 (February 2027) and again in Session 2 (May 2027). Your better score across the two sessions is treated as the final result. This gives you a meaningful second attempt without repeating the full academic year.
Ques. Which chapters are deleted from CBSE Class 12 Chemistry 2026-27?
Ans. CBSE removed Solid State, p-Block Elements (Groups 16, 17, 18), Surface Chemistry, and General Principles and Processes of Isolation of Elements during the NCERT rationalization. These remain excluded in 2026-27. The current Chemistry syllabus covers 10 chapters totalling 70 marks for theory.
Ques. What books should I use for CBSE Class 12 Computer Science preparation?
Ans. The NCERT Computer Science with Python Class 12 textbook is the primary and mandatory resource. Sumita Arora’s Computer Science with Python (Class 12) is the most comprehensive supplement — it contains the largest collection of Python programs, SQL exercises, and Python-SQL connectivity examples aligned with the board exam pattern. Maintain your own program record file while working through both books.
Ques. How should I cover the full CBSE Class 12 syllabus in 6 months from August 2026?
Ans. Divide six months into three phases: August–October 2026 for first reading of all NCERT chapters and note-making; November–December 2026 for chapter-wise revision and solving NCERT exercises and previous year questions; January 2027 for full-length sample paper practice under timed conditions. Aim to complete at least 10 full-length sample papers before Session 1 begins in February 2027.
Ques. What are the passing marks for CBSE Class 12 board exams 2027?
Ans. The passing mark for each subject is 33% of the total marks (theory + practical combined). You must also secure at least 33% in the theory component separately. For subjects with internal assessment, no separate minimum is prescribed for the internal component alone.
Source: Central Board of Secondary Education — CBSE Academic (cbseacademic.nic.in)
*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.
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