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By Karan Singh Bisht
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Updated on 16 Dec 2025, 17:30 IST
CBSE Class 12 Chemistry Weightage 2026 gives students a clear picture of how marks are divided across different chapters in the CBSE board exam 2026. Knowing the chapter-wise weightage helps you study smarter by spending more time on high-scoring topics such as Electrochemistry, Chemical Kinetics, Aldehydes, Ketones and Carboxylic Acids, and Biomolecules.
By understanding the CBSE Class 12 Chemistry chapter-wise weightage for 2025-26, students can plan their preparation in a more organized way, revise important concepts effectively, and boost their chances of scoring well in both the theory and practical exams.
| CBSE Class 12 Chemistry Weightage 2026 | ||
| Component | Marks | Overview |
| Theory Exam | 70 | Covers all Chemistry chapters including numericals, reactions and concepts |
| Practical Exam | 30 | Includes experiments, activities and viva |
| Total | 100 | Balanced focus on theory and practical knowledge |
Chemistry is a key subject for Class 12 students in the science stream. To support effective preparation for the board exams, we have shared the CBSE Class 12 Chemistry chapter-wise weightage for 2026, helping students understand which topics deserve more focus.
| Unit | Chapter Title | Expected Marks |
| Physical Chemistry | Electrochemistry | 9 |
| Chemical Kinetics | 7 | |
| Solutions | 7 | |
| Inorganic Chemistry | Coordination Compounds | 7 |
| d-Block & f-Block Elements | 7 | |
| Organic Chemistry | Aldehydes, Ketones & Carboxylic Acids | 8 |
| Amines | 6 | |
| Alcohols, Phenols & Ethers | 6 | |
| Haloalkanes & Haloarenes | 6 | |
| Biomolecules | 7 |
| CBSE Class 12 Chemistry Practical Weightage 2026 | |
| Evaluation Scheme | Marks |
| Volumetric Analysis | 8 |
| Salt Analysis | 8 |
| Content Based Experiment | 6 |
| Project Work | 4 |
| Class Record and Viva | 4 |
| Total | 30 |
| Section | Question Type | Number of Questions | Marks per Question | Total Marks |
| SECTION A | Multiple Choice Questions | 16 | 1 | 16 |
| SECTION B | Short Answer Questions | 5 | 2 | 10 |
| SECTION C | Short Answer Questions | 7 | 3 | 21 |
| SECTION D | Case-Based Questions | 2 | 4 | 8 |
| SECTION E | Long Answer Questions | 3 | 5 | 15 |
To score well in Chemistry, students should first get a clear idea of the CBSE Class 12 Chemistry weightage and chapter-wise marks distribution. Give extra attention to high-weightage chapters such as Electrochemistry, Aldehydes, Ketones and Carboxylic Acids, Chemical Kinetics, and Biomolecules to improve overall scores.
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The total marks for the CBSE Class 12 Chemistry board exam 2026 will be 100 marks. This includes both theory (80 marks) and practicals (20 marks).
The chapters that carry the highest weightage in Chemistry for Class 12 2026 include:
Focusing on these chapters can help you maximize your score.
The Chemistry practicals in Class 12 carry 20 marks. These will be assessed through practical exams and internal assessments.
Yes, NCERT textbooks are essential and often enough for Chemistry preparation. Most of the questions in the exam are based on the NCERT content. However, you can also refer to additional reference books for more practice and in-depth understanding if needed.
You can check the CBSE Class 12 Chemistry Weightage 2026 chapter-wise on official CBSE websites, or Infinity Learn study materials that provide the syllabus and exam guidelines for the year 2026.
The marking scheme for CBSE Chemistry 2026 is as follows:
The theory paper includes multiple-choice questions, short-answer questions, and long-answer questions based on various chapters.
The weightage for each chapter in Chemistry Class 12 2026 will depend on the specific chapters outlined in the syllabus. Typically, chapters like Electrochemistry, Chemical Kinetics, and Biomolecules carry the highest weightage, while others have a comparatively lower weightage. For detailed chapter-wise weightage, refer to the official CBSE syllabus or Infinity Learn educational websites.
