30-01-2025
CBSE Class 10 Science Marking Scheme 2025: Complete Breakdown & Exam Pattern
Science is one of the most important subjects in CBSE Class 10, and understanding its marking scheme can help you plan your preparation effectively. The CBSE Class 10 Science Exam 2025 follows a structured pattern focusing on conceptual clarity, application-based learning, and practical knowledge.
In this blog, we’ll break down the marking scheme, weightage, question distribution, and best strategies to score high in the Science exam.
📌 CBSE Class 10 Science Exam Pattern 2025
The Science exam consists of two major components:
✅ Theory Exam: 80 Marks
✅ Internal Assessment: 20 Marks
📊 Marking Distribution for Science Exam 2025
| Sections | Marks Distribution |
|---|---|
| Physics | 25 Marks |
| Chemistry | 25 Marks |
| Biology | 30 Marks |
| Total | 80 Marks |
🔹 Internal Assessment (20 Marks): Includes periodic tests, practical work, and assignments.
📖 CBSE Class 10 Science Question Paper Structure 2025
The Science question paper is designed to test conceptual knowledge, reasoning ability, and application skills. Here’s the question type breakdown:
| Question Type | Approximate Weightage |
|---|---|
| MCQs & Objective Type | 25% (20 Marks) |
| Short Answer Questions | 40% (32 Marks) |
| Long Answer Questions | 35% (28 Marks) |
💡 Key Highlights:
✅ More Competency-Based Questions (Assertion-Reasoning, Case-Based)
✅ Reduced Rote Learning – Focus on Understanding
✅ Higher Weightage for Conceptual & Application-Based Questions
Unit-Wise Weightage:
| Unit No | Unit Name | Marks |
| 1 | Chemical Substances – Nature and Behaviour | 25 |
| 2 | World of Living | 25 |
| 3 | Natural Phenomena | 12 |
| 4 | Effects of Current | 13 |
| 5 | Natural Resources | 5 |
| Total | 80 |
Chapter-Wise Weightage:
Unit 1: Chemical Substances – Nature and Behaviour
| Chapter Name | Marks |
|---|---|
| Chemical Reactions and Equations | 6 |
| Acids, Bases and Salts | 3 |
| Metals and Non-Metals | 10 |
| Carbon and its Compounds | 6 |
Unit 2: World of Living
| Chapter Name | Marks |
|---|---|
| Life Processes | 9 |
| Control and Coordination | 6 |
| How do Organisms Reproduce? | 3 |
| Heredity and Evolution | 7 |
Unit 3: Natural Phenomena
| Chapter Name | Marks |
|---|---|
| Light – Reflection and Refraction | 10 |
| The Human Eye and the Colourful World | 2 |
Unit 4: Effects of Current
| Chapter Name | Marks |
|---|---|
| Electricity | 7 |
| Magnetic Effects of Electric Current | 6 |
Unit 5: Natural Resources
| Chapter Name | Marks |
|---|---|
| Our Environment | 5 |
🔬 CBSE Class 10 Science Internal Assessment (20 Marks)
The internal assessment is equally important and consists of:
✅ Periodic Tests (10 Marks) – Evaluating regular performance.
✅ Notebook Submission (5 Marks) – Checking consistency & presentation.
✅ Practical Work & Projects (5 Marks) – Hands-on learning experience.
📝 Pro Tip: Performing well in internal assessments can boost your overall score!
🏆 Best Preparation Strategy for CBSE Class 10 Science 2025
💡 Follow these smart tips to score 90+ in Science:
✔ Master NCERT: All questions are based on NCERT textbooks, so revise them thoroughly.
✔ Practice Diagrams & Formulas: Physics and Biology require diagram-based answers for better scores.
✔ Solve Sample Papers: Understand the paper pattern and improve time management.
✔ Focus on Assertion-Reasoning & Case-Based Questions: These will have a higher weightage.
✔ Revise Regularly: Consistency is key to retaining concepts.
🎯 Final Thoughts
The CBSE Class 10 Science Marking Scheme 2025 emphasizes conceptual clarity, real-life application, and problem-solving skills. By understanding the exam pattern and marking scheme, students can prepare strategically and score high marks in the Science exam.
🚀 Stay focused, practice regularly, and ace your Science exam with confidence!
