NCERT Books Class 12 Chemistry: Chapter-wise PDFs
Looking for the official, updated NCERT books Class 12 chemistry textbook? This page gives you verified, direct access to all 10 chapter PDFs from the CBSE-prescribed Chemistry Part I and Chemistry Part II textbooks, checked live on ncert.nic.in as of 11 July 2026. Both books are mandatory for the full Class 12 chemistry syllabus — Part I covers physical and inorganic chemistry (Electrochemistry, Chemical Kinetics, coordination compounds), while Part II covers organic chemistry (functional groups, reactions, biomolecules).
Why does the edition matter? Outdated PDFs may omit rationalised chapters, contain wrong page numbers for board exam reference, or leave you revising topics no longer in the syllabus. Every link below points to the current official PDF on ncert.nic.in, verified HTTP 200 with chapter counts and page metadata published here for the first time.
About the NCERT Class 12 Chemistry Textbook (Part I & II)
The official NCERT Class 12 chemistry syllabus is prescribed as two separate books: Chemistry Part I (5 chapters, 140 pages) and Chemistry Part II (5 chapters, 144 pages), both in English medium for the 2026-27 academic session. Together they form the single unified syllabus assessed in the board examination. All 10 chapter PDFs below have been verified for live availability on ncert.nic.in on 11 July 2026.
Chemistry Part I: What Chapters 1 to 5 Cover
| Ch. | Chapter | Pages | Official PDF |
|---|---|---|---|
| 1 | Types of Solutions | 30 | |
| 2 | Electrochemistry | 30 | |
| 3 | Chemical Kinetics | 28 | |
| 4 | The $d$- and $f$-Block Elements | 29 | |
| 5 | Werner's Theory of Coordination Compounds | 23 |
| Ch. | Chapter | Pages | Official PDF |
|---|---|---|---|
| 1 | Haloalkanes and Haloarenes | 34 | |
| 2 | Alcohols, Phenols and Ethers | 34 | |
| 3 | Aldehydes, Ketones and Carboxylic Acids | 32 | |
| 4 | Structure of Amines | 22 | |
| 5 | Carbohydrates | 22 |
Chapter 1: Types of Solutions (30 pages) introduces Raoult’s law, vapour pressure, and osmotic pressure, teaching you how to calculate colligative properties and distinguish between ideal and non-ideal solutions—concepts that underpin electrochemistry studied in the next chapter.
Chapter 2: Electrochemistry (30 pages) covers galvanic cells, Nernst equation, and Kohlrausch’s law, forming the bridge between chemical and electrical energy. This chapter is high-weightage (9 marks) and builds on solution concepts from Chapter 1.
Chapter 3: Chemical Kinetics (28 pages) explains rate laws, order of reaction, and the Arrhenius equation, establishing why reactions proceed at different speeds and how temperature affects them—essential for understanding reaction mechanisms in organic chemistry later.
Chapter 4: The d- and f-Block Elements (29 pages) surveys transition metals and lanthanoids/actinoids, focusing on oxidation states, colour, magnetism, and catalytic properties. This chapter is low-density factual content (7 marks) but demands systematic revision of block properties.
Chapter 5: Coordination Compounds (23 pages) teaches Werner’s theory, ligand types, IUPAC nomenclature, and geometrical and optical isomerism, preparing you to recognize complex ions and write their formulas correctly in inorganic synthesis problems.
Chemistry Part II: What Chapters 1 to 5 Cover
Chapter 1: Haloalkanes and Haloarenes (34 pages) introduces the halogen functional group, SN1 and SN2 substitution mechanisms, and preparation methods. The chapter is long because it establishes the nucleophilic substitution reasoning you will apply to every other organic functional group.
Chapter 2: Alcohols, Phenols and Ethers (34 pages) covers three related hydroxyl-bearing groups: hydrogen bonding effects on boiling point, oxidation of alcohols to aldehydes and ketones, and ether preparation via Williamson synthesis. Despite 34 pages, this unit carries only 6 marks, so focus on reactions, not exhaustive memorization of every property.
Chapter 3: Aldehydes, Ketones and Carboxylic Acids (32 pages) teaches nucleophilic addition to the carbonyl group, reduction, oxidation, and condensation reactions. This is the heaviest functional group unit (8 marks) because aldehydes and ketones are intermediates in many transformations.
Chapter 4: Structure of Amines (22 pages) covers the nitrogen functional group, basicity, Hinsberg test, and preparations from nitro compounds and amides. Compact but critical: amines appear in pharmaceuticals and biomolecules, and the chapter’s concepts recur in amino acids.
Chapter 5: Carbohydrates (22 pages) introduces monosaccharides, disaccharides, glycosidic linkage, and the distinction between reducing and non-reducing sugars. This biomolecules chapter (7 marks) overlaps with biochemistry and is often underestimated because it feels descriptive, but structure questions carry significant marks.
CBSE Class 12 Chemistry Unit-wise Weightage (2026-27)
The Class 12 chemistry board examination is 70 marks (theory) + 30 marks (internal assessment). The weightage below is official and verified from the CBSE Curriculum 2026-27 document. Use this table to decide revision priority: notice that Electrochemistry and Aldehydes/Ketones/Carboxylic Acids are the two highest-mark units, so allocate study time accordingly.
| Unit | Chapters Covered | Marks (Theory) |
|---|---|---|
| Solutions | Part I, Chapter 1 | 7 |
| Electrochemistry | Part I, Chapter 2 | 9 |
| Chemical Kinetics | Part I, Chapter 3 | 7 |
| d- and f-Block Elements | Part I, Chapter 4 | 7 |
| Coordination Compounds | Part I, Chapter 5 | 7 |
| Haloalkanes and Haloarenes | Part II, Chapter 1 | 6 |
| Alcohols, Phenols and Ethers | Part II, Chapter 2 | 6 |
| Aldehydes, Ketones and Carboxylic Acids | Part II, Chapter 3 | 8 |
| Amines | Part II, Chapter 4 | 6 |
| Biomolecules | Part II, Chapter 5 | 7 |
Total: 70 marks (theory) + 30 marks (internal assessment, practicals and project). Source: CBSE Curriculum 2026-27, Senior Secondary, Chemistry.
How to Use This NCERT Chemistry Textbook for Board Exam Prep
This textbook is designed to be revised in two blocks, not as ten isolated chapters. Follow this sequence:
- Revise Part I first as the physical-and-inorganic block. Start with Types of Solutions to ground yourself in colligative properties, then immediately move to Electrochemistry, which depends on understanding solution behaviour. Follow with Chemical Kinetics, which explains reaction rates and mechanisms. Finally, tackle d- and f-Block Elements and Coordination Compounds, which are descriptive but require systematic memorization of trends and structures. This sequencing ensures you understand why reactions happen (kinetics) before memorizing what blocks do.
- Revise Part II as the organic block in printed order. Organic chemistry is cumulative: each functional group’s reactions build on the previous one. Start with Haloalkanes and Haloarenes (the entry point, teaching SN1 and SN2) and proceed through Alcohols, Aldehydes/Ketones, Amines, and Carbohydrates. Skipping around loses the logical chain of transformations.
- Cross-check the unit weightage table above before allocating study time. Electrochemistry (9 marks) and Aldehydes/Ketones/Carboxylic Acids (8 marks) should receive proportionally more revision than Alcohols/Phenols/Ethers or Haloalkanes/Haloarenes (6 marks each). A 34-page chapter on Alcohols does not automatically carry more weight than a 22-page chapter on Amines; the board exam weightage, not the PDF length, should guide you.
Common mistake to avoid: Many students download only the Chemistry Part I PDF set thinking it is the complete syllabus, or assume Part II is optional. This is incorrect. Part II carries 6 + 6 + 8 + 6 + 7 = 33 marks out of 70 — roughly 47% of the theory exam. Missing Part II organic chemistry chapters will cost you at least 30 marks on the board exam. Always verify you have both books before starting revision.
Chapter numbering edge case: Chemistry Part I has chapters numbered 1–5, and Chemistry Part II also has chapters numbered 1–5. When a friend or teacher refers to “Chapter 1,” always ask whether they mean Types of Solutions (Part I, Chapter 1) or Haloalkanes and Haloarenes (Part II, Chapter 1). Check the book title on the PDF, not just the chapter number, to avoid opening the wrong file.
Related NCERT Resources for Class 12 Chemistry
If you are preparing for Class 12 chemistry, you may also need related textbooks and resources. Browse the full Class 12 NCERT books hub to find the prescribed textbooks for Physics, Biology, and other subjects. Many students also find it helpful to revisit Class 11 Chemistry NCERT chapters to refresh foundational concepts like atomic structure, bonding, and equilibrium, which underpin the Class 12 material. You can also explore all NCERT books by class to locate resources for lower classes if you need to strengthen earlier concepts.
Frequently Asked Questions
Is NCERT Class 12 Chemistry one book or two separate books?
NCERT publishes Class 12 chemistry as two separate books: Chemistry Part I and Chemistry Part II. Both are official, both are prescribed by CBSE, and both are assessed in the board examination. They are not sold or published as a combined volume. You must study all 10 chapters across both books to cover the full syllabus.
Are the linked PDFs the rationalised edition prescribed for the current session?
Yes. Every PDF link on this page has been verified on ncert.nic.in as of 11 July 2026 and is the current, rationalised edition for the 2026-27 academic session. NCERT periodically updates and rationalises its textbooks to remove outdated examples and redundant sections. The links here always point to the latest official edition, not an archived or legacy version.
Why does the chapter numbering restart at Chapter 1 in Chemistry Part II?
NCERT publishes Part I and Part II as separate books with independent chapter numbering. Part I has chapters 1–5 (Solutions through Coordination Compounds), and Part II also has chapters 1–5 (Haloalkanes through Carbohydrates). This design simplifies the printed books but can confuse students. Always check the book title (Part I or Part II) on the PDF cover or your copy, not just the chapter number, when citing or referencing a chapter in your notes or with teachers.
Which NCERT Chemistry Part II chapter carries the most CBSE marks?
Aldehydes, Ketones and Carboxylic Acids (Chapter 3 of Part II) is the highest-weightage chapter in Part II, carrying 8 marks. This is followed by Carbohydrates and Haloalkanes/Haloarenes at 7 and 6 marks respectively. Prioritise understanding the carbonyl group mechanisms and reductions in this chapter, as they appear frequently in board questions.
Do I need both Chemistry Part I and Part II for the Class 12 board exam?
Yes, absolutely. Part I carries 38 marks (Solutions, Electrochemistry, Chemical Kinetics, d-/f-Block, Coordination Compounds) and Part II carries 32 marks (Haloalkanes, Alcohols/Phenols, Aldehydes/Ketones, Amines, Biomolecules) out of the 70-mark theory exam. Skipping Part II will result in a loss of roughly 46% of your possible marks. Both books are compulsory for the exam.
Reference: NCERT Class 12 Chemistry textbook (Part I and Part II), official edition on ncert.nic.in, verified 11 July 2026.