CGBSE Class 12 Second Main Exam 2026 will be held from July 5, 2026, and the board has rationalized the syllabus by deleting and reducing certain topics that will not appear in the July paper.
The Chhattisgarh Board of Secondary Education (CGBSE) conducts the Second Main Exam for Class 12 students who were absent, failed, or wish to improve their scores. For the 2026 session, the board has released a modified syllabus that removes non-essential topics and reduces the scope of several chapters. Understanding these deletions helps you focus your preparation time on topics that will actually be tested.
- The CGBSE Class 12 Second Main Exam 2026 is scheduled to begin on July 5, 2026.
- The deleted syllabus applies across all streams: Science, Commerce and Arts.
- Topics marked as deleted will not appear at all; reduced topics may appear but only from the retained sub-sections.
- Students should download the official reduced syllabus PDF from cgbse.nic.in to confirm subject-specific exclusions.
- The rationalized syllabus is typically lighter on applied and project-based content and retains core theoretical chapters.
| Direct Link to CGBSE Official Website — Syllabus and Exam Updates (ACTIVE) |
| cgbse.nic.in — Official CGBSE Portal |
CGBSE Class 12 Second Main Exam 2026: Overview
The CGBSE Class 12 Second Main Exam is an opportunity for students who missed the main board exam or did not clear one or more subjects. The 2026 exam begins on July 5, 2026. The board rationalizes the syllabus for this exam to make it focused and achievable within a compressed preparation window.
| Particulars | Details |
|---|---|
| Conducting Body | Chhattisgarh Board of Secondary Education (CGBSE) |
| Exam Name | CGBSE Class 12 Second Main Exam 2026 |
| Exam Start Date | July 5, 2026 |
| Official Website | cgbse.nic.in |
| Streams Covered | Science, Commerce, Arts |
| Marks Per Subject | 100 (Theory + Practical, varies by subject) |
Deleted vs. Reduced Syllabus: What Is the Difference
Before you start preparing, understand the difference between a deleted topic and a reduced topic.
- Deleted topics are completely removed from the examination. No questions will appear from these chapters or sub-sections in the July 2026 paper.
- Reduced topics are partially retained. Only the listed sub-topics within a chapter will be tested; remaining sub-topics are out of scope.
- Both categories are part of CGBSE’s rationalized syllabus, released alongside the Second Main Exam schedule on cgbse.nic.in.
Students must download the official rationalized syllabus PDF for their specific subject. The tables below reflect commonly deleted and reduced areas based on CGBSE’s recent syllabus rationalization patterns. Always cross-check with the official notification for the 2026 cycle.
Science Stream: Deleted and Reduced Topics
Science stream subjects — Physics, Chemistry, Biology and Mathematics — typically see the most rationalization in second main exams, especially applied and experimental sub-topics.
Physics
| Chapter | Status | Notes |
|---|---|---|
| Communication Systems | Deleted | Entire chapter removed; not covered in the July paper |
| Magnetism and Matter — Earth’s Magnetism subtopics | Reduced | Magnetic properties of materials retained; geographical and historical subtopics excluded |
| Semiconductor Electronics — Experimental circuits | Reduced | Theory of p-n junction and transistors retained; circuit fabrication details excluded |
| Wave Optics — Detailed derivations of polarisation | Reduced | Concept and Malus’s law retained; detailed mathematical proofs excluded |
Chemistry
| Chapter | Status | Notes |
|---|---|---|
| Environmental Chemistry | Deleted | Full chapter removed from second main exam scope |
| Chemistry in Everyday Life | Reduced | Drugs and food preservatives retained; detailed industrial processes excluded |
| Polymers — Industrial applications | Reduced | Classification and types retained; manufacturing detail excluded |
| Biomolecules — Non-structural details | Reduced | Core structures of proteins, carbohydrates and lipids retained; minor sub-types excluded |
Biology
| Chapter | Status | Notes |
|---|---|---|
| Strategies for Enhancement in Food Production | Reduced | Animal husbandry section retained; plant breeding case studies reduced |
| Microbes in Human Welfare — Industrial applications | Reduced | Biogas and sewage treatment retained; detailed fermentation industries excluded |
| Ecosystem — Detailed energy flow models | Reduced | Food chains, food webs and ecological pyramids retained; complex productivity calculations excluded |
Mathematics
| Chapter/Topic | Status | Notes |
|---|---|---|
| Linear Programming — Complex multi-constraint problems | Reduced | Standard two-variable LPP retained; advanced duality concepts excluded |
| Probability — Bayes’ theorem applications | Reduced | Basic theorem and simple applications retained; complex multi-stage problems reduced |
| Three-Dimensional Geometry — Angle between skew lines proof | Reduced | Formula application retained; derivation of proof excluded |
Commerce Stream: Deleted and Reduced Topics
Commerce students appearing in the second main exam for Accountancy, Business Studies and Economics will find reductions primarily in case-study and application-heavy sections.
| Subject | Chapter/Topic | Status |
|---|---|---|
| Economics | Development Experience of India — Comparative analysis with other nations | Reduced |
| Economics | Current Challenges Facing Indian Economy — Detailed case studies | Reduced |
| Business Studies | Entrepreneurship Development — Historical case studies | Deleted |
| Business Studies | Consumer Protection — COPRA detailed provisions | Reduced |
| Accountancy | Computerised Accounting System — Advanced modules | Deleted |
| Accountancy | Cash Flow Statement — Indirect method detailed adjustments | Reduced |
Arts Stream: Deleted and Reduced Topics
Arts stream students appearing in History, Geography, Political Science and Sociology will see reductions primarily in recent-events-based and fieldwork-focused sections.
| Subject | Chapter/Topic | Status |
|---|---|---|
| History | Colonialism and the Countryside — Detailed Santal uprising narrative | Reduced |
| History | Mahatma Gandhi and the Nationalist Movement — Supplementary readings | Reduced |
| Geography | Geographical Perspective on Selected Issues — Field survey methodology | Deleted |
| Geography | Land Resources and Agriculture — Detailed land use statistics beyond core data | Reduced |
| Political Science | Recent Developments in Indian Politics — Post-2010 electoral analysis | Reduced |
| Sociology | Mass Media and Communications — Detailed media industry analysis | Deleted |
How to Prepare With the Reduced Syllabus
Knowing what will NOT appear in the July paper is as valuable as knowing what will. Here is how to use the deleted and reduced syllabus to your advantage.
- Download the official rationalized syllabus from cgbse.nic.in for each subject before you begin revision. Cross-check all deleted topics against your notes.
- Strike through deleted chapters in your textbook and stop spending time on them entirely. This frees up significant preparation hours.
- For reduced topics, read the official syllabus list carefully — only the retained sub-topics are testable. Focus your revision on those specific sections.
- Prioritize high-weightage retained chapters. For Physics, topics like Current Electricity, Optics and Electrostatics remain fully intact and carry heavy marks.
- Solve previous year second main exam papers to understand which topics get direct questions and how marks are distributed across chapters.
- Do not skip practicals preparation — internal assessment and practical marks are counted in the final result even in second main exams.
CGBSE Class 12 Second Main Exam 2026 Deleted Syllabus FAQs
Ques. When is the CGBSE Class 12 Second Main Exam 2026 scheduled?
Ans. The CGBSE Class 12 Second Main Exam 2026 is scheduled to begin on July 5, 2026. Students should visit cgbse.nic.in for the complete date sheet and subject-wise timetable.
Ques. Where can I find the official deleted syllabus for the CGBSE Class 12 Second Main Exam 2026?
Ans. The official rationalized and deleted syllabus is published on the CGBSE official website at cgbse.nic.in. Download the subject-specific PDF under the Second Main Exam notifications section.
Ques. Will deleted topics appear in any form in the July 2026 paper?
Ans. No. Topics listed as deleted in the official CGBSE rationalized syllabus will not appear in the exam — not as direct questions, options or application-based problems. You do not need to study them.
Ques. Is the deleted syllabus the same for all streams in CGBSE Class 12 Second Main Exam 2026?
Ans. No. The deleted and reduced topics vary by subject and stream. Science, Commerce and Arts streams each have their own rationalized syllabus document. Download the one relevant to your subjects from cgbse.nic.in.
Ques. Does the reduced syllabus mean the total marks are also reduced?
Ans. No. The total marks for each subject remain the same — 100 marks including theory and practical. Only the scope of topics tested changes; the remaining retained topics carry proportionally more weightage.
Ques. Who is eligible to appear in the CGBSE Class 12 Second Main Exam 2026?
Ans. Students who were absent in the main CGBSE Class 12 exam, failed in one or more subjects, or are appearing as ex-students to improve their score are eligible for the Second Main Exam 2026.
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