Marking scheme of CBSE class 10 science subject-wise 2024-25
Jan. 28, 2025
Overview of Class 10 Science marking scheme
CBSE Class 10 Science marking scheme 2025: Understand the exam pattern, chapter-wise marking scheme, and question format for the 2025 Science board exam.
The CBSE has released the updated syllabus and chapter-wise marking scheme for the Class 10 Science board exams in 2025. Students can get the syllabus on the official CBSE website. Using this syllabus, students can plan their studies effectively to cover all topics thoroughly.
The Class 10 Science syllabus for 2025 includes three main subjects
Physics
Biology
Chemistry
Each carries significant weight for the exams. Here’s a detailed guide to help you understand the marking scheme and focus on better preparation.
Chapters of Physics
NCERT Class 10 Chapters
1. Light - Reflection and Refraction
2. The human eye and the colorful world
3. Electricity
4. Magnetic effect of electric current
Chapters of Biology
NCERT Class 10 Chapters
1. Life processes
2. Control and coordination
3. How do organisms reproduce
4. Heredity
5. Our Environment
Chapters of Chemistry
NCERT Class 10 Chapters
1. Chemical Reactions and Equations
2. Acids, Bases, and Salts
3. Metals and Non-metals
4 Carbon and its Compounds
CBSE Class 10th Science Blueprint, Marking Scheme
Here’s the CBSE Class 10 Science blueprint to help you prepare better for your exams. Scoring well in science becomes easier when you approach it with curiosity and an open mind. You can understand the subject thoroughly and perform well with regular practice and consistent study.
The blueprint gives you a clear syllabus overview and helps you plan your preparation effectively. Many students find science challenging, but with the right strategy and smart learning techniques, anyone can overcome those difficulties. Below, you’ll find the CBSE Class 10 Science blueprint to guide you.
CBSE 10th science unit-wise Marking scheme
Unit
Chapters
Marks
Chemical Substances – Nature and Behaviour
Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-Metals, Carbon and its Compounds
25
World of Living
Life Processes, Control, and Coordination, How Do Organisms Reproduce? Heredity and Evolution (Partial)
25
Natural Phenomenon
Light – Reflection and Refraction, The Human Eye and the Colourful World (Partial)
12
Effects of Current
Electricity, Magnetic Effects of Electric Current (Partial)
13
Natural Resources
Our Environment
5
Class 10 CBSE Science Chapter Wise Marking Scheme 2025
Chapter Name
1M
2M
3M
5M
4M
TM
Chemical Reactions..
3
–
1
–
–
6
Acids, Bases & Salts
3
–
–
–
–
3
Metals and Non-metals
1
1
1
–
1
10
Carbon and its Compounds
1
–
–
1
–
6
Periodic Classification..
Deleted
Life Processes
2
2
1
–
–
9
Control and Coordination
1
1
–
–
–
3
How do Organisms..
1
–
–
1
–
6
Heredity and Evolution
3
–
–
–
1
7
Light – Reflection..
–
–
2
–
1
10
The Human Eye..
–
1
–
–
–
2
Electricity
2
–
–
1
–
7
Magnetic Effects..
3
–
1
–
–
6
Sources of Energy
Deleted
Our Environment
–
1
1
–
–
5
Sustainable Management..
Deleted
Grand Total
20
6
7
3
3
80
Key Highlights of CBSE Class 10 Science 2025
The CBSE Class 10 Exam 2024-25 will have a total of 100 marks. The theory exam will be worth 80 marks, and the remaining 20 marks will come from internal assessments.
Total Marks (100) = Theory (80) + Internal Assessment (20)
The CBSE Class 10 Science Theory exam will be worth 80 marks and will last 3 hours. Students will also have an extra 15 minutes to read the question paper before starting.
Particulars
Details
Exam Conducting Body
Central Board of Secondary Education (CBSE)
Subject
Science
Mode of Exam
Offline
Exam Duration
3 Hours
Medium of Exam
English / Hindi
Types of Questions
MCQs, Short and Long Answer Type Questions
Theory Marks
80
Internal Assessment
20
Total Marks
100
Passing Marks
33% in aggregate
The same exam pattern will apply to all three Science subjects: Physics, Chemistry, and Biology. Students preparing for the exam should keep this in mind and plan their study schedule accordingly. To learn more about the CBSE Class 10 marking scheme, passing criteria, and grading system, check the link below.
Here’s a detailed look at the exam pattern for the CBSE Class 10 Board Exams in 2025.
Sections
Total Number of Questions
Marks Per Question
Sec A
18 MCQS
18 x 1 = 18
2 ( Assertion-Based)
2 x 1 = 2
Sec B
5 ( Very Short Answer Questions)
5 x 2 = 10
Sec C
6 (Short Answer Questions)
6 x 3 = 18
Sec D
3 (Long Answer Questions)
3 x 4 = 12
Sec E
4 (Case Study Based Questions)
5 x 4 = 20
Total
38
80 Marks
The theory exam will be out of 80 marks, and the internal assessment will account for the remaining 20 marks.
The paper will have 30 questions divided into four sections, with a mix of objective, short-answer, and long-answer questions. Each question will be worth 1, 2, 3, 4, or 5 marks.
To pass the CBSE Class 10 Science exam, students need to score at least 33% overall.
Students must at least score 33% on the theory exam and the internal assessment.
Students will have 3 hours to complete the exam.
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Frequently Asked Questions
section C carries the most weight in the Class 10 Science exam.
Yes, CBSE has reduced the Class 10 Science syllabus for the 2024-25 academic year by about 30%.
CBSE marks are not out of 500 or 600. Each subject is marked out of 100.
The difficulty of the 2024-25 board exams can vary, and it’s hard to predict. Instead of worrying, focus on preparing well to perform your best.
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