The NCERT Class 12 Chemistry Book Chemistry I holds the first five units of the Class 12 Chemistry course — Solutions, Electrochemistry, Chemical Kinetics, the d- and f-Block Elements, and Werner’s Theory of Coordination Compounds — and every official chapter PDF is linked in the table below.
This page goes further than the download links: each chapter below is measured from the book itself, with its named sections, its numbered figures indexed from the textbook, and its end-of-chapter question count — so you can see which chapters carry the numerical work and which lean on diagrams before you open a single file.
Download the official Class 12 Chemistry Part I PDFs
All five files in the table below are NCERT’s own chapter PDFs, hosted on ncert.nic.in — no mirrors and no third-party rehosts, so what you download is the official edition.
The table lists chapter number, chapter title, printed pages, and the official ncert.nic.in link for each. For example, the Solutions chapter, at https://ncert.nic.in/textbook/pdf/lech101.pdf, is the natural starting point: it carries the volume’s heaviest question set and the concentration terms the later chapters assume.
| 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 |
At a glance: the Class 12 Chemistry PDF
- 5 chapters
- 5 verified chapter PDFs — one per chapter, all official
- 140 printed pages
- 93 named sections
- 48 verified numbered figures indexed from the textbook
- 117 exercise questions
- 0 activities — no chapter in this volume sets a practical activity
The question load is front-loaded: Chapter 1 closes with 41 questions and Chapter 3 with 30, while Chapter 5 has only 4.
The figure load runs the other way — Chapter 5 is the most figure-rich chapter in the book, while Chapter 4, with the longest section list in the volume, uses only 6 figures. Those two numbers tell you where the calculations live and where the diagrams do the teaching.
Chemistry Class 12 chapters: what each one teaches
| Ch. | Chapter | Sections | Activities | Figures | Questions |
|---|---|---|---|---|---|
| 1 | Types of Solutions | 18 | — | 10 | 41 |
| 2 | Electrochemistry | 16 | — | 8 | 18 |
| 3 | Chemical Kinetics | 13 | — | 11 | 30 |
| 4 | The $d$- and $f$-Block Elements | 29 | — | 6 | 24 |
| 5 | Werner's Theory of Coordination Compounds | 17 | — | 13 | 4 |
The directory above is the only count table on this page. A section is one of NCERT’s own numbered headings in the chapter — subsections such as 1.3.2 Solubility of a Gas in a Liquid count separately, which is why a chapter with six main topics can list more than a dozen sections.
A figure is a numbered figure indexed from the book, and a question is an end-of-chapter exercise. No second table on this page repeats these numbers.
| Chapter | Kind of work |
|---|---|
| 1 – Solutions | Definitional and numerical, built around colligative properties |
| 2 – Electrochemistry | Conceptual and equation-based: Nernst equation, conductance, batteries |
| 3 – Chemical Kinetics | Mathematical and graphical: integrated rate equations, half-life |
| 4 – d- and f-Block Elements | Factual and trend-driven; the periodic trends carry most of the content |
| 5 – Werner’s Theory | Visual and conceptual: isomerism diagrams, crystal field theory |
Chapter 1: Types of Solutions
A solution is a homogeneous mixture of two or more substances, and this chapter sorts those mixtures into solid, liquid and gaseous solutions.
It then shows how concentration is written in chemistry — mole fraction, molarity and molality — builds to colligative properties (properties that depend on how many solute particles are present, not what they are), and closes with abnormal molar masses, where the measured molar mass does not match the expected value.
- Types of Solutions (1.1)
- Expressing Concentration of Solutions (1.2)
- Vapour Pressure of Liquid Solutions (1.4)
- Ideal and Non-ideal Solutions (1.5)
- Colligative Properties and Determination of Molar Mass (1.6)
- Abnormal Molar Masses (1.7)
Chapter 1 runs 30 pages with 18 named sections, 10 numbered figures and 41 exercise questions — the heaviest question load in the volume, as the directory above shows.
Chapter 2: Electrochemistry
An electrochemical cell is built from two metallic electrodes dipping into electrolytic solution(s), and the ionic conductor — the electrolyte — is an essential component of the cell. The chapter works from that cell through the Nernst equation and conductance to the practical devices that store and supply power: batteries and fuel cells.
- Electrochemical Cells (2.1)
- Galvanic Cells (2.2)
- Nernst Equation (2.3)
- Conductance of Electrolytic Solutions (2.4)
- Electrolytic Cells and Electrolysis (2.5)
- Batteries (2.6)
- Fuel Cells (2.7)
- Corrosion (2.8)
The chapter spans 30 pages with 16 named sections, 8 numbered figures and 18 exercise questions (the book records 24 question parts). Electrode potentials introduced here return as trends in \(M^{2+}/M\) standard electrode potentials in Chapter 4, section 4.3.5.
Chapter 3: Chemical Kinetics
Chemical kinetics is the study of chemical reactions in terms of their rate of a reaction — how fast reactants are consumed and products appear — and of the variables that alter that speed, including the rearrangement of atoms and the formation of intermediates.
From the rate expression the chapter introduces the rate constant and the order of a reaction, links order to half-life, and finishes with activation energy and collision theory.
- Rate of a Chemical Reaction (3.1)
- Factors Influencing Rate of a Reaction (3.2)
- Integrated Rate Equations (3.3)
- Temperature Dependence of the Rate of a Reaction (3.4)
- Collision Theory of Chemical Reactions (3.5)
The chapter runs 28 pages with 13 named sections, 11 numbered figures and 30 exercise questions — the second largest question set in the volume. Its graphs carry much of the teaching: concentration vs time plots, \( \ln[R] \) vs \( t \), and \( \log [R]_0/[R] \) vs \( t \) figures are printed in the book.
Chapter 4: The d- and f-Block Elements
The d-block, Groups 3 to 12, occupies the large middle section of the periodic table: in these transition elements the inner d orbitals are progressively filled. The f-block sits outside the main body of the table, split into the lanthanoids and actinoids, and the chapter tracks their oxidation states and the trends that run across them.
- Position in the Periodic Table (4.1)
- Electronic Configurations of the d-Block Elements (4.2)
- General Properties of the Transition Elements (d-Block) (4.3)
- Some Important Compounds of Transition Elements (4.4)
- The Lanthanoids (4.5)
- The Actinoids (4.6)
With 29 pages and 29 named sections, Chapter 4 has more sections than any other chapter in this volume, yet only 6 numbered figures and 24 questions — the book’s fact-heavy, trend-driven chapter. The electrode-potential trend sections (4.3.5, 4.3.7) build directly on the electrode-potential ideas from Chapter 2.
Chapter 5: Werner’s Theory of Coordination Compounds
The chemistry of coordination compounds — a central metal ion surrounded by ligands — is one of the important and challenging areas of modern inorganic chemistry, and this chapter is organised around the models built to explain it.
In order, those models are Werner’s theory itself, isomerism, valence bond theory and crystal field theory.
- Werner’s Theory of Coordination Compounds (5.1)
- Definitions of Some Important Terms Pertaining to Coordination Compounds (5.2)
- Isomerism in Coordination Compounds (5.4)
- Bonding in Coordination Compounds (5.5)
- Bonding in Metal Carbonyls (5.6)
- Importance and Applications of Coordination Compounds (5.7)
This is the shortest chapter in the volume — 23 pages — with the most figures, 13 numbered figures, and only 4 exercise questions (14 parts). Its isomerism and d-orbital-splitting ideas are carried almost entirely by the figures, so a student who skips them loses most of the chapter.
Class 12th Chemistry chapters: which have study pages here
The directory below shows whether each of the five chapters has a published study page on this site, linked only when it is live.
| Ch. | Chapter page |
|---|---|
| 1 | Types of Solutions (coming soon) |
| 2 | Electrochemistry (coming soon) |
| 3 | Chemical Kinetics (coming soon) |
| 4 | The $d$- and $f$-Block Elements (coming soon) |
| 5 | Werner's Theory of Coordination Compounds (coming soon) |
How to use the Class 12 Chemistry book
- Start with Chapter 1 (Types of Solutions). Mole fraction, molarity and molality are the concentration vocabulary the later chapters assume.
- Follow with Chapter 2 (Electrochemistry). The Nernst equation and electrode-potential ideas return in Chapter 4’s trends in \(M^{2+}/M\) standard electrode potentials (section 4.3.5).
- Do Chapter 3 (Chemical Kinetics) next. It carries the volume’s second largest question set (30); practise the integrated rate equations and half-life problems rather than just reading them.
- Finish with the two inorganic chapters. Chapter 4 (d- and f-Block) and Chapter 5 (Werner’s theory) reward figure-first revision: the trend plots in Chapter 4, the isomerism and d-orbital-splitting diagrams in Chapter 5.
Every chapter here ends with a printed SUMMARY — use it as a self-test before opening the exercise set; if you can say the summary’s ideas in your own words, you are ready for the questions. Remember that textbook contents and the examinable syllabus are not always identical — check the current official syllabus before finalising what to study.
Which Class 12 Chemistry textbook you need: Part I or Part II
This page indexes Chemistry Part I (Chemistry I), the first volume, which holds the five chapters above. NCERT publishes the remaining Class 12 Chemistry units in a second companion volume, Chemistry Part II, available from ncert.nic.in and not covered on this page. For the full book list, see the Class 12 hub.
Related resources on this site
This listing is maintained for the 2026-27 academic session using the NCERT textbook information available to us. NCERT remains the authority for confirming the latest edition.
- All NCERT books on this site — browse by class and subject.
- Class 12 hub — the full Class 12 book list.
- Class 12 Chemistry hub — subject-level links for the Class 12 Chemistry books.
- Chemistry Part II page — the companion second volume.
Sources and data verification
- Which edition: the official NCERT Class 12 Chemistry Part I (Chemistry I), chapter files lech101 to lech105 on ncert.nic.in. Figure captions and section titles are quoted from the textbook.
- What this page covers: the five units of Chemistry Part I only — not Chemistry Part II, not other Class 12 subjects, not exemplar or lab-manual volumes. The counts in the directory reflect this book’s chapters, not the fuller CBSE scheme of studies.
- Session: this listing is maintained for the current NCERT edition of the book linked above.
- Authority split: NCERT settles textbooks, editions and official PDFs; CBSE settles curriculum, syllabus and examinations. To confirm a textbook edition, check ncert.nic.in, not CBSE.
Reference: NCERT Class 12 Chemistry textbook, official edition on ncert.nic.in. Figure captions and section titles quoted from the textbook; page references are to the official PDF.
FAQs about the NCERT Class 12 Chemistry Part I book
How many chapters are in the NCERT Class 12 Chemistry Book Chemistry I?
Five. The book holds Chapter 1 Types of Solutions, Chapter 2 Electrochemistry, Chapter 3 Chemical Kinetics, Chapter 4 The d- and f-Block Elements and Chapter 5 Werner’s Theory of Coordination Compounds. Together they run to 140 printed pages, and every chapter PDF is linked in the table above.
Are the Class 12 Chemistry PDFs on this page free and official?
Yes. Every link in the chapter table above is NCERT’s own file on ncert.nic.in — the same chapter PDFs that schools use. There is no mirror or third-party rehost involved.
Which chapter covers the Nernst equation and batteries?
Chapter 2, Electrochemistry. The Nernst equation is section 2.3, batteries are section 2.6, and fuel cells follow at section 2.7.
Which chapter covers isomerism and crystal field theory?
Chapter 5, Werner’s Theory of Coordination Compounds. Isomerism is section 5.4, and crystal field theory is subsection 5.5.4; the chapter’s 13 figures carry most of that teaching.
Where are the Class 12 Chemistry chapters that are not in Part I?
In the second volume, Chemistry Part II, published by NCERT and available from ncert.nic.in. This page covers only the five units of Part I — the Class 12 hub on this site links the full book list.