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CBSE Class 10 Science 2026, Exam Pattern, Syllabus, Marks Distribution

by PW Gulf
October 9, 2025
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CBSE Class 10 Science is an important subject which helps students to understand basic concepts from Physics, Chemistry, and Biology. It develops a good foundation for the higher classes and future exams. The syllabus is prepared by CBSE and is based on the NCERT guidelines which makes the learning more clear and meaningful.

The subject is a combination of theory and practical work which helps students apply the theory in real life. To score well in CBSE Class 10 Board Exams, 2026, students must be aware of the CBSE Class 10 Science Exam Pattern, 2026, CBSE Class 10 Science Syllabus & Marks Distribution. It is also helpful to check the CBSE Class 10 Science Weightage 2026, important chapters and how many marks each chapter carries.

Students preparing for the CBSE Class 10 Board Exam 2026 should review the CBSE Class 10 Science Syllabus 2026, along with the CBSE Class 10 Science Weightage 2026, CBSE Class 10 Science marks distribution, and important chapters.

CBSE Class 10 Science Exam Overview

CBSE Class 10 Science Exam 2026 tests students on key topics from Physics, Chemistry, and Biology. CBSE Class 10 Science Syllabus 2026 is fully based on the latest CBSE Class 10 Science marking scheme.

Knowing the CBSE Class 10 Science Paper Pattern 2026 and chapter wise weightage of science class 10 helps students plan better and focus on important chapters in class 10 science. The table below provides an overview of CBSE Class 10 Science Exam 2026: The table below provides an overview of CBSE Class 10 Science Exam: 

Class 10 Science Exam Overview

Aspects

Details

Exam Name

CBSE Class 10 Science Board Exam 2026

Conducting Body

Central Board of Secondary Education (CBSE)

Total Marks

100 (80 Marks Theory + 20 Marks Internal Assessment)

Duration

3 Hours

Question Types

MCQs, Very Short Answer, Short Answer, Long Answer

Assessment Areas

Physics, Chemistry, Biology, and Practical Skills

Syllabus Source

NCERT Class 10 Science Book

Also Know: CBSE Class 10 Science Notes PDF

CBSE Class 10 Science Exam Pattern 2026

CBSE Class 10 Science Exam Pattern 2026 is aimed to evaluate the knowledge of students in Physics, Chemistry, Biology, and practical skills. The exam is designed to test students' ability to apply concepts, solve problems and explain scientific ideas clearly.

The paper includes different types of questions: Multiple Choice Questions (MCQs), Short Answer Questions (SAQs), and Long Answer Questions (LAQs). The pattern follows CBSE’s official sample papers and CBSE Class 10 marking scheme 2026.

CBSE Class 10 Science Exam Pattern 2026

Component

Details

Total Marks

100 Marks (80 Theory + 20 Internal Assessment)

Exam Duration

3 Hours

Question Types

MCQs, Very Short, Short Answer, and Long Answer

Internal Assessment

Practicals, Periodic Tests, Projects, and Portfolio (20 Marks)

Difficulty Levels

Easy (30%), Moderate (50%), Difficult (20%)

CBSE Class 10 Science Syllabus 2026

The CBSE Class 10 Science Syllabus 2026 is based on the NCERT curriculum and consists of five major units covering topics from Physics, Chemistry, Biology, and Environmental Science. The syllabus is based on conceptual understanding, real-life application, and practical-based learning. The full CBSE Class 10 Science Syllabus PDF 2026 is available to download from the official website of the Central Board of Secondary Education (CBSE): cbseacademic.nic.in

Students should also check the weightage of science class 10 chapters and the chapter wise marks distribution before beginning their preparation.

CBSE Class 10 Science  Marks Distribution 2026

The CBSE Class 10 Science Marks Distribution 2026 helps students understand how their final marks are divided between theory and internal assessment. This structure is set by the Central Board of Secondary Education (CBSE) to fairly test students’ understanding, application, and practical skills.

CBSE Class 10 Science  Marks Distribution 2026

Component

Marks

Details

Theory (Board Exam)

80

Questions based on Physics, Chemistry, and Biology from NCERT textbook. Includes MCQs, short and long answer questions.

Internal Assessment

20

Includes periodic tests, practical work, lab activities, and projects conducted by schools.

Total

100

Final result is based on the combined score (Theory + Internal).

The CBSE Class 10 Science Exam 2026 includes a variety of questions: MCQs, case-based questions, short answers, and long answers, covering all major topics. 

CBSE Class 10 Science FAQs

Q:What is the exam pattern of CBSE Class 10 Science 2026?

Ans: The Pattern of CBSE Class 10 Science Examination 2026 contains 80 marks for theory and 20 marks of internal assessment Physics, Chemistry and Biology. The paper consists of MCQs, short and long answer questions as per the CBSE Class 10 science marking scheme .

Q: How is the CBSE Class 10 Science Marks Distribution 2026?

Ans: Science is divided into theory (80 marks) and internal assessment (20 marks). The internal assessment consists of practicals, projects and periodic tests, conducted by schools. Refer to the science marks distribution class 10 table above.

Q: What is CBSE 10th Science Chapter Wise Weightage 2026?

Ans: Chapters such as Life Processes, Electricity and Chemical Reactions have higher weightage. The marks are chapter-wise which helps the students pay attention to important topics while revising.

Q: Has the CBSE Class 10 Science Syllabus 2026 been reduced?

Ans: As of now, there is no official syllabus reduction for 2026. Students should follow the latest NCERT Class 10 science syllabus 2026 and refer to updates on cbseacademic.nic.in.

Q: Which are the most important chapters in CBSE Class 10 Science 2026?

Ans: Important chapters include Life Processes, Electricity, Acids, Bases and Salts, Carbon Compounds as these have high probability of weightage in the final exam.

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