CBSE Class 12 Chemistry Syllabus & Exam Pattern (2025-26)

Overview of CBSE Class 12 Chemistry

CBSE Class 12 Chemistry is a core subject that builds advanced understanding across physical, organic, and inorganic chemistry. It plays a crucial role in the Class 12 board examination and forms the backbone of competitive exams such as NEET, JEE Main, and JEE Advanced.

The syllabus comprises 10 units with 16 chapters, carrying 70 marks for theory and 30 for practicals. Students learn reaction mechanisms, numerical problem-solving, molecular structures, and real-world chemical applications. The subject prepares learners for careers in medicine, pharmacy, chemical engineering, biotechnology, and research, while aligning with NEP competency-based learning that balances factual knowledge with analytical thinking.

Syllabus Highlights & Exam Pattern

The CBSE Class 12 Chemistry theory paper is a 3-hour examination for 70 marks, designed to test conceptual clarity, application skills, and logical reasoning.

Key highlights of the exam pattern:

• Theory paper composition: 20% MCQs / assertion-reasoning, 20% case-based and competency-based questions, 60% short and long answer questions, including numericals
• Practical examination (30 marks): Volumetric analysis, qualitative salt analysis, content-based experiment
• Question emphasis: Organic reaction mechanisms (~30%), Physical chemistry numericals (~25%), Inorganic trends and reactions (~20%)

The syllabus has been rationalised for 2025-26, removing overly complex or repetitive topics to focus on core chemical concepts.

Unit-wise Syllabus Breakdown

The Class 12 Chemistry curriculum progresses from fundamental concepts to advanced applications in modern chemistry.

Class 12 Chemistry – Unit-wise Syllabus (Official Format)

UNIT	TITLE	SYLLABUS CONTENT	MARKS
Unit I	Solutions	Colligative properties, Raoult's law, ideal and non-ideal solutions, elevation of boiling point, depression of freezing point, numerical problems.	7
Unit II	Electrochemistry	Nernst equation, conductance, electrolytic and galvanic cells, batteries, corrosion, applications of Kohlrausch's law.	9
Unit III	Chemical Kinetics	Rate of reaction, order and molecularity, Arrhenius equation, half-life calculations, graphical analysis.	7
Unit IV	d and f Block Elements	Properties of transition elements, reactions of KMnO₄ and K₂Cr₂O₇, lanthanoid contraction, basic concepts of coordination chemistry.	7
Unit V	Coordination Compounds	Valence Bond Theory (VBT), Crystal Field Theory (CFT), isomerism, crystal field splitting, magnetic behaviour.	7
Unit VI	Haloalkanes & Haloarenes	SN1 and SN2 mechanisms, elimination reactions, polyhalogen compounds, reaction conditions.	6
Unit VII	Alcohols, Phenols & Ethers	Preparation methods, Lucas test, Williamson synthesis, Reimer-Tiemann reaction.	6
Unit VIII	Aldehydes, Ketones & Carboxylic Acids	Aldol and Cannizzaro reactions, acidity comparison, important conversions and reactions.	8
Unit IX	Amines	Basicity of amines, Hinsberg test, diazotisation reactions, Hofmann bromamide reaction.	6
Unit X	Biomolecules	Carbohydrates, proteins, enzymes, vitamins, DNA and RNA differences.	7
Total (Theory)			70

Students are advised to follow the NCERT textbook sequence, as board questions are framed strictly in accordance with it.

Chapter-wise Weightage (High-Level)

Unit	Marks	Key Focus Areas	Common Question Types
Solutions	7	Raoult's law, colligative properties, Van't Hoff factor	Numericals, short theory
Electrochemistry	9	Nernst equation, EMF-ΔG relation, batteries	Long answers, numericals
Chemical Kinetics	7	Rate law, order & molecularity, Arrhenius equation	Numericals, derivations
d and f Block Elements	7	Transition metals, lanthanide contraction	Short answers, reactions
Coordination Compounds	7	VBT, CFT, isomerism, nomenclature	Short answers, diagrams
Organic Chemistry (Units VI-IX)	26	Reaction mechanisms, named reactions, conversions	Named reactions, mechanisms
Biomolecules	7	Carbohydrates, proteins, enzymes, DNA & RNA	Diagrams, short notes

High-weightage areas:

• Organic chemistry dominates (37%); memorize 50+ named reactions for conversions
• Numericals dominate: Solutions, Electrochemistry, Kinetics
• Scoring units: Coordination Compounds, Biomolecules

Practical & Lab Components

The practical examination carries 30 marks and is compulsory.

• Volumetric analysis (15 marks): Acid-base titrations, salt analysis, indicator selection, and standardisation
• Qualitative salt analysis (8 marks): Identification of cations and anions using systematic group tests
• Content-based experiment (5 marks): Topics such as surface chemistry, chromatography, or pH measurement
• Viva voce & practical file (2 marks): Assessment of procedures, observations, and record maintenance

Regular practice of 20+ salt analysis schemes and maintaining clean observation tables is critical for scoring well.

Evaluation Scheme for Examination (Practical)

Component	Marks
Volumetric Analysis	8
Salt Analysis	8
Content Based Experiment	6
Project Work	4
Class Record and Viva Voce	4
Total	30

How to Study CBSE Class 12 Chemistry Effectively

• Create reaction flowcharts for organic chemistry (50+ reactions per unit)
• Practise numericals daily, especially from Electrochemistry and Solutions
• Memorise inorganic trends using periodic table patterns and mnemonics
• Solve NCERT Exemplar and last 10 years' board papers for question familiarity
• Focus NEET/JEE alignment: Units II, III, and VI-VIII cover nearly 70% of entrance questions
• Revise named reactions and mechanisms weekly
• Use color-coded notes for different branches: Physical (Blue), Organic (Green), Inorganic (Red)

Download Chemistry Syllabus & Study Resources

Access essential Chemistry preparation resources:

• CBSE Class 12 Chemistry Syllabus PDF (2025-26)
• Named reactions chart (100+ reactions)
• Numerical problems bank (200+ questions)
• Salt analysis flowcharts
• Periodic table trends summary
• Download Chemistry Syllabus PDF Free