With the CBSE Class 10 Science Board Exam scheduled for February 25, 2026, strategic preparation is critical. We have analyzed the Official CBSE Science Sample Question Paper (SQP) and Marking Scheme released for the current session to bring you the most accurate and updated blueprint.
This guide breaks down the chapter-wise marks distribution, identifies high-scoring topics, and highlights the new exam structure observed in the official sample paper.
Why Is the CBSE Blueprint Important?
The blueprint serves as a roadmap for students, helping them focus on high-weightage topics and specific question types. It categorizes marks allocation across chapters and question types such as multiple-choice questions (MCQs), assertion and reasoning, case-based questions, and subjective questions.
By aligning your preparation with the blueprint, you can:
- Strategically prioritize topics.
- Familiarize yourself with the exam pattern.
- Boost your confidence for the big day.
Major Update: Exam Structure
Unlike previous years where sections were divided purely by marks (Section A, B, C, D, E), the Official SQP 2025-26 is organized by Subject, providing a clear segmentation of Biology, Chemistry, and Physics.
- Section A: Biology (30 Marks)
- Section B: Chemistry (25 Marks)
- Section C: Physics (25 Marks)
- Total: 80 Marks | 39 Questions
1. Unit-Wise Weightage
The overall distribution remains consistent with the CBSE curriculum, but the internal breakdown has specific focus areas.
| Unit | Marks |
| World of Living (Biology) | 25 |
| Natural Resources (Our Environment) | 05 |
| Chemical Substances (Chemistry) | 25 |
| Natural Phenomena (Light & Eye) | 12 |
| Effects of Current (Electricity & Magnetic Effects) | 13 |
| Total | 80 |
2. Detailed Chapter-Wise Blueprint (2025-26)
Based on the detailed analysis of the 39 questions in the Official Sample Paper, here is the exact marks distribution for every chapter.
Biology (Section A - 30 Marks)
Biology carries the highest weightage in the paper.
| Chapter Name | 1 Mark (MCQ/AR) | 2 Marks (Short Ans) | 3 Marks (Short Ans) | 4 Marks (Case-Based) | 5 Marks (Long Ans) | Total Marks |
| Life Processes | 2 | 2 | - | 1 | - | 10 |
| Control & Coordination | 2 | - | 1 | - | - | 5 |
| How Do Organisms Reproduce? | - | - | - | - | 1 | 5 |
| Heredity | 2 | - | 1 | - | - | 5 |
| Our Environment | 3 | 1 | - | - | - | 5 |
| Total | 9 | 3 | 2 | 1 | 1 | 30 |
Chemistry (Section B - 25 Marks)
Chemistry shows a very balanced distribution across all chapters.
| Chapter Name | 1 Mark (MCQ/AR) | 2 Marks (Short Ans) | 3 Marks (Short Ans) | 4 Marks (Case-Based) | 5 Marks (Long Ans) | Total Marks |
| Chemical Reactions & Eq. | 3 | - | 1 | - | - | 6 |
| Acids, Bases, and Salts | 2 | - | - | 1 | - | 6 |
| Metals and Non-metals | 2 | 1 | 1 | - | - | 7 |
| Carbon and its Compounds | 1 | - | - | - | 1 | 6 |
| Total | 8 | 1 | 2 | 1 | 1 | 25 |
Physics (Section C - 25 Marks)
Electricity dominates this section, while Magnetic Effects has a smaller footprint in this specific paper.
| Chapter Name | 1 Mark (MCQ/AR) | 2 Marks (Short Ans) | 3 Marks (Short Ans) | 4 Marks (Case-Based) | 5 Marks (Long Ans) | Total Marks |
| Light: Reflection & Refraction | 2 | 1 | - | 1 | - | 8 |
| Human Eye & Colourful World | 1 | - | 1 | - | - | 4 |
| Electricity | - | 1 | 1 | - | 1 | 10 |
| Magnetic Effects of Current | - | - | 1 | - | - | 3 |
| Total | 3 | 2 | 3 | 1 | 1 | 25 |
Key Takeaways from the Blueprint
Where are the Case-Based Questions? (4 Marks each)
The sample paper places the 3 Case-Based Questions in specific chapters. Prepare these topics for application-based scenarios:
- Life Processes: Focus on Digestion/Enzymes (e.g., experiments on protein/starch digestion).
- Acids, Bases, and Salts: Focus on Neutralization reactions/Titration experiments.
- Light: Focus on Lenses (e.g., Camera lenses, magnification calculations).
Where are the Long Answer Questions? (5 Marks each)
The big 5-mark questions are dedicated to:
- How do Organisms Reproduce: Plant reproduction (Vegetative propagation) or Pollination logic.
- Carbon and its Compounds: Complete combustion, Electron dot structures, and chemical properties (e.g., Unsaturated hydrocarbons).
- Electricity: Complex circuit problems (Series/Parallel combinations) involving Power, Voltage, and Heating effects .
The "High-Yield" Chapters
To maximize your score, prioritize these chapters which carry 35% of the total marks combined:
- Life Processes (10 Marks): The heavyweight of Biology.
- Electricity (10 Marks): The heavyweight of Physics.
- Light (8 Marks): Critical for numericals and ray diagrams.
- Metals and Non-Metals (7 Marks): Focus on chemical properties and extraction.
Also Read: CBSE Class 10 English (Language & Literature) Blueprint
Tips to Prepare for the CBSE Class 10 Science Exam
Master the Diagrams:
- Biology: Practice the Neuron structure and Human Alimentary Canal thoroughly.
- Physics: Ray diagrams for defects of vision (Hypermetropia) and Lenses are mandatory.
Precision in Answers:
- For Reasoning questions (Assertion-Reason), clarity is key. For example, knowing why the sky is blue (Rayleigh scattering of shorter wavelengths).
- For Numericals, marks are awarded for the formula, substitution, and final answer with units. Ensure you practice calculation steps for Electricity and Light.
Don't Ignore "Small" Chapters:
- Magnetic Effects has lower weightage (3 marks) in this blueprint, but the question asked is conceptual (Field lines strength). Ensure you understand the properties of magnetic field lines.
- Our Environment is an easy 5 marks. Focus on Ozone depletion, Food webs, and Garbage disposal.
Conclusion
The CBSE Class 10 Science blueprint is a crucial tool for strategic preparation. By focusing on high-weightage chapters and mastering various question types, you can boost your performance in the exam. Use this blueprint to plan your study schedule effectively, and don’t forget to revise regularly.
Stay tuned for more updates and resources to help you ace your CBSE board exams! If you found this post helpful, share it with your friends and fellow students.
Make the most of this detailed blueprint and ensure you are well-prepared for the CBSE Class 10 Science board exam! Good luck!
Note: This blueprint is based on general trends and may vary slightly from the actual exam paper.
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Map Items for CBSE Class 10 SST 2025-26
Sir ,how did you know about that which type of questions will be asked from each chapter?
This blueprint is based on general trends and may vary slightly from the actual exam paper.
Ooo,okay sir
Sir is this blue print same as board and the marking skim too of 2025
please check science blueprint Marks have been have been
missed match.