CBSE Class 12 Science Subject Wise Blue Print 2025: Know Chapter Wise Weightage

The CBSE 12th Exams 2025 will begin on 15th February 2025. Students who have opted for Science stream need to be aware of the CBSE Class 12 Science Subject Wise Blue Print 2025 to strategize their preparation and perform well in the exams. This article provides the CBSE 12th Blueprint 2025 for Physics, Biology, and Chemistry. The blueprint provides unit-wise and chapter-wise marks distribution. It helps appearing students to decide which topics they should prepare thoroughly.

CBSE Class 12 Physics Blueprint 2025: Chapter-wise Weightage

The CBSE 12th Physics Exam has two components: practical and theory. The theory exam carries 70 marks while the practical exam carries 30 marks. Appearing students can find the chapter-wise weightage for practical as well as theory exam for CBSE Class 12 Physics Board Exam in the table 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

Also see: CBSE Class 12 Physics Syllabus 2024-25

CBSE 12th Physics Practical Exam 2025 Blueprint

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

Also see: CBSE 12th Physics Practical Exam Syllabus 2025

CBSE Class 12 Chemistry Blueprint 2025: Chapter-wise Weightage

The CBSE 12th Chemistry Exam has two components: practical and theory. The theory exam carries 70 marks while the practical exam carries 30 marks. Appearing students can find the CBSE Class 12 Chemistry Exam Pattern for practical as well as theory exam in the table below:

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

Also see: CBSE 12th Board Chemistry Question Paper 2024 Download Free PDF

CBSE 12th Chemistry Practical Exam 2025 Blueprint

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

CBSE Class 12 Biology Blueprint 2025: Chapter-wise Weightage

The CBSE 12th Biology Exam has two components: practical and theory. The theory exam carries 70 marks while the practical exam carries 30 marks. Appearing students can find the CBSE Class 12 Biology Exam Pattern for practical as well as theory exam in the table below:

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
	Biotechnology - Principles and Processes
Unit - IV	Biotechnology and It’s Application	12
	Organisms and Populations
Unit - V	Ecosystem	10
	Biodiversity and Its Conservation
Total		70

Also see: CBSE Class 12 Biology Previous Year Question Paper 2024

CBSE 12th Biology Practical Exam 2025 Blueprint

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

Also see: CBSE 12th Biology Exam 2025 Preparation

The CBSE Class 12 Science Blueprint 2025 provides the CBSE 12th Exam Pattern for Physics, Biology, and Chemistry. It mentions the chapter-wise and unit-wise marks weightage. Students can go through this article to know the exam pattern and strategize their CBSE Class 12 Exam Preparation.