PSEB Class 12 compartment exam 2026 is based on the full annual syllabus — no chapters are removed or reduced for supplementary students appearing on June 25, 2026.
The Punjab School Education Board (PSEB) does not offer a trimmed syllabus for compartment exam writers. Every unit and chapter tested in the main annual examination is equally examinable in the supplementary paper. Knowing the chapter-wise marks weightage helps you spend the most time on high-scoring topics and clear the paper in one attempt.
- Compartment exam date: June 25, 2026
- Applicable syllabus: Full annual syllabus 2025–26 — no chapters are removed
- Practical marks: Carried forward from the annual exam; only theory is re-attempted
- Eligibility: Students who failed in one or two subjects in the PSEB Class 12 annual exam
- Exam duration: 3 hours per paper
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Table of Contents |
Full or Reduced Syllabus for PSEB Compartment Students?
PSEB prescribes the complete annual syllabus for its Class 12 compartment examination. The board does not offer a grace or reduced pattern for supplementary writers. Question papers for the compartment exam are drawn from the identical unit list, topic distribution, and marks scheme used in the annual exam held earlier in the session.
If you failed in Physics, you must prepare all 10 units — from Electrostatics to Communication Systems — for the June 25, 2026 paper. No chapter is exempt. Because practicals are retained from the annual exam, you only need to re-appear in the theory component of the failed subject.
PSEB Class 12 Compartment Exam 2026 Pattern
| Feature | Details |
|---|---|
| Exam Date | June 25, 2026 |
| Conducting Body | Punjab School Education Board (PSEB), Mohali |
| Applicable Syllabus | Full annual syllabus 2025–26 (no reduction) |
| Exam Duration | 3 hours |
| Theory Marks | 70–80 marks depending on subject |
| Practical Marks | Carried forward from the annual exam |
| Medium of Exam | Punjabi, Hindi, English |
| Subjects Allowed | One or two failed subjects |
Physics Chapter Weightage — Theory 70 Marks
Optics (14 marks) and the Electrostatics–Magnetism cluster (24 marks combined) dominate the Physics paper. Secure these units before moving to lower-weightage topics like Electromagnetic Waves and Communication Systems.
| Unit | Topic | Marks (approx.) |
|---|---|---|
| 1 | Electrostatics | 8 |
| 2 | Current Electricity | 7 |
| 3 | Magnetic Effects of Current and Magnetism | 8 |
| 4 | Electromagnetic Induction and Alternating Currents | 8 |
| 5 | Electromagnetic Waves | 3 |
| 6 | Optics | 14 |
| 7 | Dual Nature of Radiation and Matter | 4 |
| 8 | Atoms and Nuclei | 6 |
| 9 | Electronic Devices | 7 |
| 10 | Communication Systems | 5 |
| Total | 70 |
Weightage based on past PSEB Class 12 Physics question paper trends.
Chemistry Chapter Weightage — Theory 70 Marks
In Chemistry, p-Block Elements (8 marks) and Aldehydes, Ketones and Carboxylic Acids (7 marks) are the highest-scoring units. Organic Chemistry topics collectively account for over 30 marks — do not skip these chapters for the compartment paper.
| Unit | Topic | Marks (approx.) |
|---|---|---|
| 1 | Solutions | 5 |
| 2 | Electrochemistry | 7 |
| 3 | Chemical Kinetics | 5 |
| 4 | Surface Chemistry | 4 |
| 5 | General Principles and Processes of Isolation of Elements | 3 |
| 6 | p-Block Elements | 8 |
| 7 | d and f-Block Elements | 5 |
| 8 | Coordination Compounds | 4 |
| 9 | Haloalkanes and Haloarenes | 4 |
| 10 | Alcohols, Phenols and Ethers | 4 |
| 11 | Aldehydes, Ketones and Carboxylic Acids | 7 |
| 12 | Amines | 4 |
| 13 | Biomolecules | 4 |
| 14 | Polymers | 3 |
| 15 | Chemistry in Everyday Life | 3 |
| Total | 70 |
Weightage is indicative based on past PSEB Class 12 Chemistry paper analysis.
Mathematics Chapter Weightage — Theory 80 Marks
Calculus alone accounts for 35 marks — more than 40% of the Mathematics theory paper. Scoring well in Integration, Applications of Derivatives, and Differential Equations can clear the passing threshold on its own. Vectors and 3D Geometry (14 marks) is the second priority.
| Unit | Topic | Marks (approx.) |
|---|---|---|
| 1 | Relations and Functions, Inverse Trigonometric Functions | 8 |
| 2 | Matrices and Determinants | 10 |
| 3 | Calculus (Continuity, Differentiation, Integration, Applications, Differential Equations) | 35 |
| 4 | Vectors and Three-Dimensional Geometry | 14 |
| 5 | Linear Programming | 5 |
| 6 | Probability | 8 |
| Total | 80 |
Weightage based on past PSEB Class 12 Mathematics annual paper trends.
Biology Chapter Weightage — Theory 70 Marks
Genetics and Evolution (18 marks) is the single largest unit in Biology. Combined with Reproduction (14 marks) and Ecology (14 marks), these three units account for 46 of the 70 theory marks.
| Unit | Topic | Marks (approx.) |
|---|---|---|
| 1 | Reproduction (in Organisms, Flowering Plants, Human Reproduction, Reproductive Health) | 14 |
| 2 | Genetics and Evolution (Inheritance, Molecular Basis, Evolution) | 18 |
| 3 | Biology in Human Welfare (Health, Disease, Microbes, Food Production) | 14 |
| 4 | Biotechnology (Principles, Processes, Applications) | 10 |
| 5 | Ecology (Populations, Ecosystems, Biodiversity, Environmental Issues) | 14 |
| Total | 70 |
Weightage based on past PSEB Class 12 Biology paper trends.
High-Priority Chapters to Focus On
With limited time before June 25, 2026, direct your preparation toward the chapters that carry the most marks in your subject:
| Subject | Top Priority Chapters | Combined Marks |
|---|---|---|
| Physics | Optics, Electrostatics, Electromagnetic Induction and AC, Magnetic Effects of Current | ~38 |
| Chemistry | p-Block Elements, Aldehydes and Ketones, Electrochemistry, Haloalkanes and Alcohols | ~28 |
| Mathematics | Calculus (all sub-topics), Vectors and 3D Geometry | ~49 |
| Biology | Genetics and Evolution, Reproduction, Ecology | ~46 |
Solve at least three years of past PSEB Class 12 question papers for your subject. The board often repeats question types — especially numericals in Physics and Chemistry and diagram-based questions in Biology.
PSEB Class 12 Compartment Exam 2026 Syllabus FAQs
Ques. Is the PSEB Class 12 compartment exam 2026 based on a full or reduced syllabus?
Ans. The PSEB Class 12 compartment exam 2026 follows the full annual syllabus. No chapters or units are removed for supplementary students. You must prepare the entire syllabus of the subject you failed in the main exam.
Ques. When is the PSEB Class 12 compartment exam 2026?
Ans. The PSEB Class 12 compartment exam 2026 is scheduled for June 25, 2026. Check the official PSEB website at pseb.ac.in for the subject-wise timetable and admit card details.
Ques. Do I need to re-appear in the practical exam for PSEB compartment 2026?
Ans. Generally, PSEB carries forward practical marks from the annual examination and supplementary students re-attempt only the theory paper of the failed subject. Confirm this on the official PSEB notification before your exam.
Ques. Which chapters carry the most marks in PSEB Class 12 Physics?
Ans. Optics carries 14 marks — the highest of any single unit in Physics. Electrostatics (8 marks), Magnetic Effects of Current (8 marks), and Electromagnetic Induction and AC (8 marks) are the next most important units. These four units together account for approximately 38 of the 70 theory marks, based on past paper trends.
Ques. How many subjects can I appear in during the PSEB Class 12 compartment exam 2026?
Ans. Students who failed in one or two subjects in the PSEB Class 12 annual exam are eligible for the compartment exam. You can appear in the theory paper(s) of the subject(s) you failed.
Ques. Where can I find the official PSEB Class 12 compartment syllabus 2026?
Ans. The official syllabus and all compartment exam notifications are available on the PSEB official website at pseb.ac.in. Navigate to the Class 12 section to find the syllabus document for your subject.
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