CBSE 12th Science Subject Wise Blue Print 2025: Check Chapter Wise Weightage

CBSE 12th Science Subject Wise Blue Print 2025 is given below. Candidates can check the unit-wise marks distribution for Physics, Chemistry, and Biology.

Abhilasha Kiran

Updated on -Jan 21, 2025 | 10:28 AM IST

CBSE 12th Science Subject Wise Blue Print 2025 is available below (Image Credits: pexels.com).

CBSE 12th Science Subject Wise Blue Print 2025: The Central Board of Secondary Education (CBSE) will commence the Class 12th Board Exams on February 15, 2025. Science stream students must go through the CBSE 12th Science Subject Wise Blue Print 2025 to make last-minute changes in their preparation strategy based on their strengths and weaknesses. This CBSE 12th Physics/Chemistry/Biology/ Blueprint 2025 includes the unit-wise marks distribution. Candidates can use it to know which sections they must focus more on.

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CBSE 12th Science Subject Wise Blue Print 2025: Check Chapter Wise Weightage

Check the CBSE 12th Science Blueprint 2025 below. Candidates can check the Chapter-wise weightage for CBSE 12th Physics, Chemistry, and Biology subjects.

CBSE 12th Science Subject Wise Blue Print 2025 | Physics Chapter-Wise Weightage

The CBSE Class 12 Physics Exam is conducted in two parts: theory and practical. While the theory exam holds 70 marks, the practical exam is conducted for 30 marks. Candidates can check the chapter-wise weightage for the theory exam and the CBSE Class 12th Physics Practical Exam weightage based on the evaluation schemes. Candidates can check the CBSE 12th Physics Blue Print below.

Unit	Chapters	Chapter-Wise Weightage
Unit - I Electrostatics	Chapter 1: Electric Charges and Fields	5
Unit - I Electrostatics	Chapter 2: Electrostatic Potential and Capacitance	5
Unit - II Current Electricity	Chapter 3: Current Electricity	6
Unit - III Magnetic Effects of Current and Magnetism	Moving Charges and Magnetism	6
Unit - III Magnetic Effects of Current and Magnetism	Magnetism and Matter	5
Unit - IV Electromagnetic Induction and Alternating Currents	Electromagnetic Induction	4
	Alternating Current	2
Unit - V Electromagnetic Waves	Electromagnetic Waves	4
Unit - VI Optics	Ray Optics and Optical Instruments	10
Unit - VI Optics	Wave Optics	4
Unit - VII Dual Nature of Radiation and Matter	Dual Nature of Radiation and Matter	4
Unit - VIII Atoms and Nuclei	Atoms	4
Unit - VIII Atoms and Nuclei	Nuclei	4
Unit IX: Electronic Devices	Semiconductor Electronics: Materials, Devices, and Circuits	7
Total	70

CBSE 2025 Class 12 Physics Blue Print: Practical Exam

The CBSE Class 12 Physics Practical Exam will be conducted for 30 marks. Candidates can check the weightage below.

Tasks	Marks
Experiment 1 (Section 1)	7
Experiment 2 (Section 2)	7
Practical record	5
Activity	3
Investigatory Project	3
Viva	5
Total marks	30

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CBSE 12th Science Subject Wise Blue Print 2025 | Chemistry Chapter-Wise Weightage

The CBSE Class 12 Chemistry examination consists of two components: theory and practical. The theory paper carries 70 marks, while the practical examination is assessed for 30 marks. Students can refer to the chapter-wise weightage provided for the theory portion and the evaluation scheme for the CBSE Class 12 Chemistry Practical to understand the distribution of marks. The CBSE Class 12 Chemistry Blueprint outlines the exam pattern and marking scheme in detail.

Unit	Chapter Name	Chapter-Wise Weightage
Physical Chemistry
Unit II	Solutions	7
Unit III	Electrochemistry	9
Unit IV	Chemical Kinetics	7
Total Weightage		23
Inorganic Chemistry
Unit VIII	d-block and f-block Elements	7
Unit IX	Coordination Compounds	7
Total Weightage		14
Organic Chemistry
Unit X	Haloalkanes and Haloarenes	6
Unit XI	Alcohols, Phenols, and Ethers	6
Unit XII	Aldehydes, Ketones, and Carboxylic Acids	8
Unit XIII	Amines	6
Unit XIV	Biomolecules	7
Total Weightage		33
Overall Weightage	23+14+33	70

CBSE 2025 Class 12 Chemistry Blue Print | Practical Exam Weightage

The CBSE Class 12 Chemistry practical exam weightage are below:

Sections	Marks
Salt Analysis	8
Volumetric Analysis	8
Content-Based Experiment	6
Class Record and Viva	4
Project Work	4
Total Weightage	30

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CBSE 12th Science Subject Wise Blue Print 2025 | Biology Chapter-Wise Weightage

CBSE Class 12 Biology exams include a 70-mark theory paper and a 30-mark practical. Chapter-wise weightage for theory and the practical evaluation scheme are available. The Blueprint details the exam pattern and marking.

Unit	Chapter Name	Chapter-Wise Weightage
Unit - I	Sexual Reproduction in Flowering Plants	16
	Human Reproduction
	Reproductive Health
Unit - II	Principles of Inheritance and Variation	20
	Molecular Basis of Inheritance
	Evolution
	Human health and Diseases
Unit - III	Microbes in Human Welfare	12
Unit - III	Biotechnology - Principles and Processes	12
Unit - IV	Biotechnology and It’s Application	12
Unit - IV	Organisms and Populations	12
Unit - V	Ecosystem	10
Unit - V	Biodiversity and Its Conservation	10
Total		70

CBSE 2025 Class 12 Biology Blue Print | Practical Exam Weightage

Candidates can check the CBSE Class 12th Biology Practical Exam weightage below.

Sections	Marks
One Major Experiment	5
One minor Experiment	4
Slide Preparation	5
Spotting	7
Practical Record + Viva	4
Investigatory Project + Viva Voce	5
Total	30

The CBSE 12th Science Subject Wise Blue Print 2025 outlines the marks distribution for each subject Physics, Chemistry, Biology, Mathematics and its units or chapters. Candidates can get an insight into the weightage and prepare accordingly.

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