CBSE Class 12 Chemistry Syllabus 2026-27 and Exam Pattern, Check Marking Scheme, Chapter-wise Exam Pattern

All the science stream students with Chemistry as one of their major subjects must have started their preparation for the final board exams. And to start the preparation, students need to firstly go through the CBSE Class 12 Chemistry Syllabus carefully to score well in the exams. Students can now check and download their newly updated syllabus for the academic year 2026-27 by simply visiting the official website of the Central Board of Secondary Education, i.e., www.cbseadamic.nic.in.

CBSE Class 12 Chemistry Syllabus 2026-27 Overview:

The CBSE has formally released the Class 12 Chemistry curriculum for academic year 2026-27. It provides students a better understanding of the subject by covering units in depth . The syllabus consists of two sections: 30 marks for practical work and the rest 70 marks are for the theory exam. Students can better plan their preparation and know exactly what to study.

CBSE Class 12th Chemistry Unit Wise Syllabus 2026

As per the newly updated CBSE Class 12th curriculum, the chemistry syllabus is divided into 9 different divisions, which are further divided into Physical, Organic, and Inorganic Chemistry. Students can check the detailed unit-wise CBSE Class 12th Chemistry Syllabus in the table shared below:

CBSE Class 12th Chemistry Unit-Wise Syllabus 2025-26
Unit	Name of the Unit	Marks
Unit 1	Some Basic Concepts of Chemistry	07
Unit 2	Structure of an Atom	09
Unit 3	Classification of Elements and Periodicity in Properties	06
Unit 4	Chemical Bonding and Molecular Structure	07
Unit 5	Chemical Thermodynamics	09
Unit 6	Equilibrium	07
Unit 7	Redox Reactions	04
Unit 8	Organic Chemistry: Some Basic Principles and Techniques	11
Unit 9	Hydrocarbons	10
Total		70 Marks

CBSE Class 12 Chemistry Syllabus 2026-27 [Detailed]

To help students prepare for their exams, the CBSE Class 12 Chemistry Syllabus 2026-27 has been provided here in a comprehensive, chapter-by-chapter or unit-by-unit format. Here is the detailed syllabus given below:

Unit 1: Some Basic Concepts of Chemistry

Foundations
Building blocks
Quantitative chemistry
Reactions

Unit 2: Structure of an Atom

Subatomic particles
Atomic models
Quantum ideas
Orbitals
Electron filling rules
Configuration

Unit 3: Classification of Elements and Periodicity in Properties

Classification
Periodic trends
Nomenclature

Unit 4: Chemical Bonding and Molecular Structure

Types of bonds
Representing bonds
Theories
Shapes
Molecular orbital theory
Hydrogen bond

Unit 5: Chemical Thermodynamics

Basic concepts
First law
Hess’s law
Second law
Equilibrium and third law

Unit 6: Equilibrium

Basics
Factors affecting equilibrium
Iconic equilibrium
PH and solutions
Solubility

Unit 7: Redox Reactions

Concepts
Balancing
Applications

Unit 8: Organic Chemistry – Some Basic Principles and Techniques

Introduction
Purification and analysis
Electronic effects
Bond fission
Reagents and reactions

Unit 9: Hydrocarbons

Aliphatic
Alkanes
Alkenes
Alkynes Aromatic Hydrocarbons
Introduction, IUPAC nomenclature, benzene: resonance, aromaticity, chemical properties.

CBSE Class 12 Chemistry Exam Pattern

Evaluation Parameter	Board Specification
Conduction Board	Central Board of Secondary Education (CBSE)
Academic Class	Class 12 (Senior Secondary)
Subject Name	Chemistry
Subject code	043
Maximum Marks	100 Marks (Total Evaluation)
Theory Component	70 Marks (Written Board Examination)
Internal Component	30 Marks (Practical, Project, Viva-voce)
Exam Duration	3 Hours
Syllabus Structure	Divided into 2 core sections (Theory Paper & Internal Assessment

CBSE Class 12th Chemistry Syllabus 2026 for Practical Exams

For Class 12 Chemistry, the practical exam is an important part of the final assessment. It carries a weightage of 30 marks, which is added to the theory marks to make the total of 100. The practical exam evaluation is based on different aspects such as laboratory experiments, project work, class records maintenance, and viva.

CBSE Class 12th Chemistry Syllabus for Practical Exams
Evaluation Scheme for Examination	Marks
Volumetric Analysis	08
Salt Analysis	08
Content-Based Experiment	06
Project Work	04
Class record and viva	04
Total	30

CBSE Class 12th Chemistry Syllabus 2026-27 PDF Download Link

CBSE has officially released the updated Class 12 Chemistry syllabus for the academic year 2025-26 on its official website. This syllabus PDF provides a complete chapter-wise outline of all topics that students need to study for the upcoming board exams. If you are appearing for the CBSE Class 12 Chemistry exam in 2026, make sure to check the latest syllabus first. Download the detailed CBSE Class 12 Chemistry Syllabus 2026-27 PDF from the direct link that has been shared below:

CBSE Class 12th Chemistry Syllabus 2026-27 Pdf: Click to Download

Preparation Tips for CBSE Class 12 Chemistry Syllabus 2025-26

Students preparing for the upcoming CBSE Class 12th Board exams with the science stream must be confused about how to start the preparation for the Class 12 Chemistry exam. No worries! We got you covered with the most effective preparation tips for the CBSE Class 12 Chemistry Exam prep.