Students can check here the CBSE Class 10 Science chapters, which will help them, score high in the board exams. Check CBSE Class 10 Science scoring chapters here for Physics, Chemistry and Biology. Also, check out the CBSE Class 10 Science marking scheme and more…
CBSE Class 10 Science: Most Scoring Chapters – The Central Board of Secondary Education (CBSE) will conduct the CBSE Class 10 board exams 2026 between February 17 and March 11, 2026 in pen and paper format. The CBSE 10th Science exam 2026 is scheduled on February 25, 2026.
Students preparing for the CBSE 10th Science exam 2026 must go through the CBSE Class 10 Syllabus 2026 for Science. This article shares the most scoring chapters in CBSE 10th Science subject. Students can check out the distribution of marks to various Science chapters (Physics, Chemistry and Biology) and plan a preparation strategy on finishing the chapters with high weightage first. However, they must remember that to ace the exams, they must study all the topics and chapters mentioned in the CBSE Class 10 Science syllabus.
Also read: Check detailed Phase 1 CBSE Class 10 exam dates 2026
CBSE Class 10 Science Marking Scheme 2026
Students can check the marking scheme followed in CBSE Class 10 Science exam 2026 in the table below.
| Section A: Objective-type Questions (20 Marks)
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| Section B: Short-Answer-Type Questions-I (12 Marks)
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| Section C: Short-Answer-Type Questions-II (21 Marks)
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| Section D: Long-Answer-Type Questions (15 Marks)
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| Section E: Source-Based/Case-Based Questions (12 Marks)
|
Also read: CBSE Class 10 exam pattern 2026
Commonly asked questions
This year, CBSE has introduced major changes in the pattern of CBSE 10th 2026 exam. According to the revised structure, the Board will conduct the exam in two phases. The question paper for Science and Social Science will be divided into two sections. Science will carry subjects such as Physics, Chemistry, Biology. Social Science comprises History, Geography, Political Science, Economics. Students will have to answer section-wise. Evaluation will be done by subject- specific teachers.
The CBSE Class 10 board exam consist of 80-mark theory paper and 20-mark internal assessment subject. Total marks are 100. Candidates need to secure 33 per cent marks to pass the exam.
There is no negative marking in CBSE 10th exam. Candidates need to secure the pass mark. The pass mark in the exam is 33 per cent.
CBSE Class 10 Science: Most Scoring Chapters
For CBSE Class 10 Science, the most scoring chapters, based on high weightage (approx.25+) marks each for Chem/Bio) and direct questioning, are Life Processes, Metals and Non-metals, Light - Reflection and Refraction, and Electricity. Focusing on these, along with Acid, Bases & Salts and Magnetic Effects, ensures maximum marks efficiently.
Given below are the highest-scoring chapters in CBSE Class 10 Science.
Key Scoring Chapters (Unit-wise Weightage):
Unit 1: Chemical Substances-Nature and Behaviour (approx 25 Marks)
- Metals and Non-metals: High scoring due to direct, factual questions.
- Acids, Bases and Salts: Focus on pH, common salt, and chemical formulas.
- Chemical Reactions and Equations: Focus on balancing and types of reactions.
Unit 2: World of Living (approx 25 Marks)
- Life Processes: The most important, high-weightage chapter; focus on diagrams (nutrition, respiration, excretion).
- Control and Coordination / How do Organisms Reproduce: Important for diagrams and processes.
Unit 3: Natural Phenomena (approx 12 Marks)
- Light – Reflection and Refraction: High-weightage, numerical-heavy, and key ray diagrams.
Unit 4: Effects of Current (approx 13 Marks)
- Electricity: Focus on Ohm's law, numerical problems, and circuit diagrams.
- Magnetic Effects of Electric Current: Important for understanding motors/generators and magnetic field lines.
CBSE Class 10 Science: Most Scoring Chapters: Preparation Tips
- Prioritize Diagrams: Life Processes and Light chapters heavily favor diagram-based questions.
- Chemistry Equations: Practice balancing and the reactivity series.
- Numerical Practice: Focus on Electricity and Light numericals.
- NCERT Exemplar: Solve to tackle higher-order thinking skills (HOTS) questions.
- Do not skip solving CBSE 10th Sample papers and previous years' ques papers
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News & Updates
Student Forum
Anything you would want to ask experts?Answered 3 days ago
CBSE 10th Phase 2 exam 2026 will be conducted from May 15 to June 1. This is conducted for students who want to improve their scores. Only those who appeared in the first board exams can appear for this.
B
Contributor-Level 8
Answered a week ago
A score above 90% is considered outstanding. A score between 80 to 90% is excellent. Score between 75 to 80% is also good.
C
Contributor-Level 8
Answered a week ago
Students are required to secure 35% to pass the ICSE Class 10 board exam 2026. The subjects follow an 80:20 evaluation pattern. A total of 80 marks is allotted to the external board exam and 20 to the internal assessment.
A
Contributor-Level 8
Answered a week ago
| Parameter | Your Score | Impact |
| CAT | 72.33%ile | Tier-2/3 Eligibility |
| NMAT | 187 | Target non-Mumbai NMIMS campuses |
| 10th/12th | 72.6% / 65.4% | Average; may limit "Old IIMs" even if scores were higher |
| BE | 77.6% | Strong Point helps in engineering-preferred pools |
S
Contributor-Level 9
Answered a week ago
BSEB has announced the Bihar Board Matric compartment exams 2026. As per the announced date, BSEB class 10th compartment exams 2026 will be held from May 2 to May 6, 2026. Students can check the detailed BSEB class 10th compartment exam date 2026 on this page.
M
Contributor-Level 10
Answered 2 weeks ago
HPBOSE 10th result can be downloaded by logging with the required details. Students can check their results online only.
I
Contributor-Level 8
Answered 2 weeks ago
The process to check HPBOSE 10th result is given below.
- Visit Board's website
- Click link of HP Board Result 2026
- Enter required details
- Result appears on screen
- Download and save it
B
Contributor-Level 8
Answered 2 weeks ago
After the declaration of HPBOSE 10th result, students need to collect the marksheet from the schools. They can apply for Class 11 admission.
J
Contributor-Level 8
Answered 2 weeks ago
HPBOSE 10th result comprises student's name, roll number, parents' names, subject-wise marks (theory and practical), total marks, qualifying status (Pass/Fail/Compartment), percentage, and grade.
C
Contributor-Level 8
Answered 2 weeks ago
HPBOSE 10th result 2026 is declared online. Students can check their results by logging with the required details.
A
Contributor-Level 10
Jasleen Kaur Taneja is an education editorial expert at Shiksha.com. She prepares content for school board exams. She has written 1,800+ articles with 2.8 crore reads.
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