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CBSE Class 10 Science Weightage 2026, Chapter Wise Marks Distribution

authorImageAnanya Gupta17 Sept, 2025
CBSE Class 10 Science Weightage 2026

CBSE Class 10 Science Weightage 2026 helps students understand how marks are distributed across different units of the board exam. 

Knowing the weightage of science class 10 CBSE 2026 Chapter Wise allows students to focus on important topics, manage their preparation time efficiently and perform better in both theoretical and practical aspects of the subject.

CBSE Class 10 Science Weightage 2026 Overview

Class 10 Science exam assesses students' understanding of concepts, application skills, and internal assessment performance. 

Students can use this overview to understand how marks are distributed between the theory paper and internal assessment and plan their preparation effectively.

CBSE Class 10 Science Weightage 2026 Overview

Component

Marks

Theory Exam

80

Internal Assessment

20

Total

100

Chapter Wise Weightage for Class 10 CBSE Science 2026

Class 10 CBSE Science Chapter Wise Weightage helps students understand the marks assigned to each unit and chapter. This allows them to prioritize important topics, manage their study time efficiently and focus on areas that carry higher marks.

Chapter Wise Weightage for Class 10 CBSE Science

Unit No.

Unit Name / Chapters

Marks

Weightage (%)

I

Chemical Substances – Nature & Behaviour

25

31%

II

World of Living

25

31%

III

Natural Phenomena

12

15%

IV

Effects of Current

13

16%

V

Natural Resources

5

6%

Total (Theory)

 

80

100%

Internal Assessment

 

20

–

Grand Total

 

100

–

CBSE Class 10 Science Internal Assessment 2026 

The internal assessment for Class 10 Science carries 20 marks and evaluates students practical and analytical skills. It includes:

  • Conducting experiments, recording observations and writing reports.

  • Maintaining a proper record of all experiments performed.

  • Small scientific projects or investigations based on concepts studied.

  • Performance in tests, assignments and classroom activities.

How to Prepare for Class 10 Science Board Exam 2026?

To score well in the Class 10 Science Board Exam 2026, students need a clear strategy that covers both theory and practical aspects. Understanding the syllabus, chapter wise weightage, and practicing regularly are important steps for effective preparation.

  • Start by reviewing the CBSE Class 10 Science syllabus 2026 and the chapter-wise weightage. Focus on high mark units like Chemical Substances, Nature & Behaviour and World of Living.

  • Prepare short notes, flowcharts and labeled diagrams for quick revision of important concepts, formulas and processes.

  • Solve numerical problems, experiments and application-based questions regularly to strengthen conceptual understanding.

  • Attempt CBSE Class 10 previous years question papers and sample papers to understand the exam pattern, frequently asked questions and time management.

  • Allocate study time according to chapter weightage, giving priority to units carrying more marks and balancing theory and practical preparation.

  • Revise formulas important reactions, derivations and practical methods multiple times to improve retention and boost confidence.

  • Don’t ignore internal assessment and practical work these are important for scoring full marks.

 

CBSE Class 10 Science Weightage 2026 FAQs

What is the total weightage of Science Class 10 CBSE 2026?

The total marks for Class 10 Science are 100 with 80 marks for the theory paper and 20 marks for internal assessment.

What is the internal assessment weightage in CBSE Class 10 Science 2026?

The internal assessment carries 20 marks covering practical experiments, lab records and project work.

Which units have the highest weightage in CBSE Class 10 Science 2026?

Chemical Substances Nature & Behaviour and World of Living have the highest weightage each contributing 25 marks.

How can knowing the CBSE Class 10 Science Weightage 2026 help students?

Understanding the CBSE Class 10 Science Weightage 2026 allows students to prioritize high mark units, plan study schedules efficiently and focus on important chapters to maximize exam scores.
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