Exam On - 17 Feb '26 - 11 Mar '26
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
Yes, the board has made certain changes in the CBSE exam pattern 2026. For CBSE Class 10 Board Exams 2026, question papers will include 40% MCQs (multiple choice questions). 20% will be competency-based questions and the remaining 40% will be subjective or short/long answer type questions. CBSE Class 10 Science and SST ques papers will also be divided into different sections and students need to answer them accordingly.
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.
CBSE has introduced major changes in the CBSE Class 10 exam pattern. From this year, the exam will be conducted in two phases. This reduces the exam stress and provides improvement opportunities within the same academic cycle. The Social Science and Science question papers will be divided into sections.
- Science: Physics, Chemistry, Biology
- Social Science: History, Geography, Political Science, Economics Students will answer section-wise, and evaluation will be done by subject- specific teachers.
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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Student Forum
Anything you would want to ask experts?Answered 6 days ago
AP SSC board exam is easy as compared to CBSE 10th board exam. Students can eaisly crack Andhra Pradesh SSC exam with proper learning and revision.
S
Contributor-Level 10
Answered a week ago
CGPA in CBSE Classes 10 and 12 is the average of grade points obtained in the five main subjects, excluding 6th additional subjects. It is calculated by adding grade points of 5 subjects and dividing by 5. The maximum CGPA value go to up to 10.0. To convert your 10th and 12th CGPA into percentage, m
A
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Answered a week ago
The Goa Board of Secondary and Higher Secondary Education (GBSHSE) will conduct the Goa SSC exam 2026 from March 13 to April 9, 2026. The Goa board released final Goa Board 10th exam dates 2026 on the official website gbshse.in/.
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Contributor-Level 10
Answered a week ago
Students can apply for the revaluation of HP Board 10th result online. To be eligible for reevaluation, students must have secured at least 20% marks in the subject. The fee for revaluation is INR 1000 and INR 500 for rechecking.
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Contributor-Level 7
Answered a week ago
The Uttar Pradesh Madhyamik Shiksha Parishad does not release the official answer key for the multiple choice questions asked in the UP Board class 10th exams. However, coaching institutes and online portals provide the answer keys for the UP Board class 10th exam question papers.
M
Contributor-Level 10
Answered a week ago
The overall difficulty of the UPMSP class 10th English paper was easy to moderate. The subject experts termed the UP Board class 10 English paper a balanced paper which tested subject knowledge clarity. However, students who read the textbook thoroughly were able to answer all the questions easily b
M
Contributor-Level 10
Answered 2 weeks ago
The new CBSE 2026 exam format is considered beneficial for students. It aims to reduce the stress of students by allowing them to appear in two board exams. It reduces rote memorisation and focuses on competency based questions.
A
Contributor-Level 7
Answered 2 weeks ago
CBSE rarely fails any students who are just one or two marks short of passing. The board employs a grace mark policy. They adjust the marks of students to help them pass the exam.
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Contributor-Level 7
Answered 2 weeks ago
CBSE 10th marksheet certificate number comprises 7 to 8 digit alphanumeric code. It is labeled as S No or Serial Number. It is used to verify the authenticity of the certificate.
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Contributor-Level 7
Answered 2 weeks ago
CBSE Board Class 10th and 12th results will be announced in May. The result will be announced online. Students can check the same by logging with the required credentials.
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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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