The Class 12 Chemistry NCERT Book PDF (2026-27 syllabus) is the official textbook. You can download it chapter by chapter as free PDFs.
Class 12 Chemistry NCERT Book PDF Download
Every chapter of the 2026-27 Class 12 Chemistry NCERT is here as a free PDF. The list runs in NCERT order.
Every chapter below matches the printed NCERT exactly. You get worked examples, in-text questions, end-of-chapter exercises, and notes marking the content NCERT removed from the older edition.
- Chapters covered: 10 chapters, the same as the printed 2026-27 NCERT
- Format: high-quality scanned PDFs, chapter-wise and combined
- Length: about 250-320 pages combined across all chapters
- Exam alignment: CBSE Class 12 Chemistry theory paper (70 marks), NEET, JEE Main, JEE Advanced
Every chapter here is the official 2026-27 NCERT, taken from ncert.nic.in and indexed so you can find any topic fast.
Why Download the Class 12 Chemistry NCERT Book PDF?
The NCERT textbook is the most-used source for CBSE board questions, JEE Main, and NEET. Studying from the NCERT book itself, not a third-party guide, is the best way to prepare for these exams.
- 2026-27 edition: matches the current NCERT print exactly. The PDF shows every chapter kept, every section made simpler, and every topic removed.
- Worked examples in the chapter: every chapter has solved examples in NCERT's own style. CBSE markers give marks for this style.
- In-text questions plus end-of-chapter exercise: the in-text questions build your concepts. The end-of-chapter exercise trains you to apply them. The boards test both.
- Chapter-wise download: download only the chapters you need. The chapter-wise PDFs are much smaller than the combined file.
- Free and official: no paywalls, no ads, no third-party edits. Every chapter is the official NCERT print.
- Easy to bookmark: the chapter-wise PDFs have a built-in table of contents. You can jump to any topic or worked example.
What 14,380 students told us about their Class 12 Chemistry textbook usage
Source: Magnet Brains on YouTube
Class 12 Chemistry Topic Map (NCERT Textbook Coverage)
Here is how the 10 chapters group into the CBSE units below. Each chapter PDF covers the topics in NCERT order.
| Unit | Chapters | What this unit textbook covers |
|---|---|---|
| II. Solutions | Ch 1 Solutions | Types of solutions, expressing concentration, solubility of gases in liquids, ideal and non-ideal solutions, Raoult's law, colligative properties (relative lowering of vapour pressure, elevation of boiling point, depression of freezing point, osmotic pressure), van't Hoff factor. |
| III. Electrochemistry | Ch 2 Electrochemistry | Redox reactions, EMF of a cell, standard electrode potential, Nernst equation, conductance in electrolytic solutions, Kohlrausch's law, electrolysis, Faraday's laws, primary and secondary batteries, fuel cells, corrosion. |
| IV. Chemical Kinetics | Ch 3 Chemical Kinetics | Rate of reaction (average and instantaneous), factors affecting rate, order and molecularity of reactions, rate law and rate constants, integrated rate equations (zero and first order), half-life, collision theory, Arrhenius equation. |
| VI. Coordination & Block Elements | Ch 4 The d- and f-Block Elements · Ch 5 Coordination Compounds | d-block transition elements (electronic configuration, oxidation states, magnetic properties, colour, alloy formation), f-block (lanthanide and actinide series), coordination compounds (Werner's theory, ligand classification, IUPAC nomenclature, VBT, CFT, isomerism in coordination compounds). |
| VII. Haloalkanes and Haloarenes | Ch 6 Haloalkanes and Haloarenes | Nomenclature, methods of preparation, physical and chemical properties, mechanisms of substitution and elimination (SN1, SN2, E1, E2), nature of C-X bond, polyhalogen compounds. |
| VIII. Alcohols, Phenols and Ethers | Ch 7 Alcohols, Phenols and Ethers | Classification, IUPAC nomenclature, methods of preparation, physical and chemical properties of alcohols, phenols and ethers, mechanism of dehydration, uses of alcohols and phenols. |
| IX. Aldehydes, Ketones and Carboxylic Acids | Ch 8 Aldehydes, Ketones and Carboxylic Acids | Nomenclature, nature of carbonyl group, methods of preparation, physical and chemical properties, mechanism of nucleophilic addition, reactivity of alpha-hydrogen in aldehydes, uses of aldehydes, ketones, carboxylic acids. |
| X. Amines | Ch 9 Amines | Classification of amines, structure, methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines, diazonium salts and their importance in synthetic organic chemistry. |
| XI. Biomolecules | Ch 10 Biomolecules | Carbohydrates (classification, monosaccharides, disaccharides, polysaccharides), proteins (elementary idea of amino acids, peptide bond, polypeptides, primary and secondary structure of proteins, denaturation), enzymes, vitamins, nucleic acids (DNA and RNA). |
NCERT Class 12 Chemistry Deleted Syllabus 2026-27
The exam board has trimmed the NCERT 2026-27 Class 12 Chemistry syllabus to cut the study load for CBSE Boards, JEE and NEET. The topics below are officially out of the 2026-27 question paper, so skip them while revising.
| Chapter | Deleted Topics (2026-27) |
|---|---|
| Solid State (formerly Ch 1) | Full chapter removed in the 2026-27 update. Unit cell and packing efficiency are no longer tested. |
| Solutions (Ch 1) | Abnormal molar masses and van't Hoff factor (some sub-parts removed); ideal-vs-non-ideal solutions retained. |
| Electrochemistry (Ch 2) | Galvanic cell construction details removed; Nernst equation and conductance retained. |
| Surface Chemistry (formerly Ch 5) | Full chapter removed; colloids and adsorption are no longer in scope. |
| Coordination Compounds (Ch 5) | Stability constants and bonding in metal carbonyls (some parts removed). |
| p-Block Elements (Ch 7) | Group 15-18 oxidation-state trends trimmed. Specific compounds dropped. |
| Polymers (Ch 10) | Classification by molecular forces removed; biodegradable polymers retained as qualitative. |
The chapter-wise resources linked in the All Chapters index above already mark every deleted line inline, so you don't waste revision hours on dropped topics.
What's New in the 2026-27 Class 12 Chemistry NCERT
The 2026-27 print keeps the cuts made earlier. Here are the key changes that affect what you should revise:
- The Solid State (former Ch 1): removed in the 2024-25 update. Unit cells, packing efficiency, and crystal defects are no longer examinable.
- Surface Chemistry (former Ch 5): removed in the 2024-25 update. Adsorption, catalysis, and colloids are no longer examinable.
- General Principles and Processes of Isolation of Elements (former Ch 6): removed. Metallurgy steps like froth flotation and leaching are no longer in scope.
- The p-Block Elements (former Ch 7): removed in the 2024-25 update. The nitrogen-family, oxygen-family, and halogen-family chapters are out of scope for 2026-27.
- Polymers, Chemistry in Everyday Life (former Ch 15, Ch 16): removed. Addition and condensation polymerisation, polymers in daily life, and the chemistry-in-everyday-life chapter are no longer examinable.
Each chapter PDF carries an inline note wherever a topic was added, changed, or removed from the older edition.
NCERT BOOK PDF · CLASS 12 CHEMISTRY
Class 12 Chemistry - Exam Weightage
Class 12 Chemistry is worth about 200 marks combined across CBSE Boards, JEE Main, JEE Advanced and NEET UG. That makes it the second-heaviest science subject after Physics on these exams.
Class 12 Chemistry Weightage Snapshot (CBSE 2026 Theory Paper)
The 70-mark CBSE Class 12 Chemistry theory paper spreads unevenly across the 10 chapters. Inorganic Chemistry (Coordination + d/f Block) tops the table at 14 marks, about 20% of the theory paper.
| Chapter | Topic | CBSE Marks (2026) | JEE Main 2025 Qs |
|---|---|---|---|
| Ch 4 | The d- and f-Block Elements | 7 marks | 2 |
| Ch 5 | Coordination Compounds | 7 marks | 2 |
| Ch 1 | Solutions | 7 marks | 1 |
| Ch 8 | Aldehydes, Ketones and Carboxylic Acids | 7 marks | 2 |
| Ch 2 | Electrochemistry | 6 marks | 1 |
| Ch 3 | Chemical Kinetics | 6 marks | 1 |
| Ch 7 | Alcohols, Phenols and Ethers | 6 marks | 1 |
| Ch 10 | Biomolecules | 6 marks | 1 |
| Ch 6 | Haloalkanes and Haloarenes | 5 marks | 1 |
| Ch 9 | Amines | 5 marks | 1 |
Class 12 Chemistry CBSE 2026 Paper Pattern Snapshot
The 70-mark CBSE Class 12 Chemistry theory paper runs 3 hours and has five sections. Knowing the weight of each section helps you plan revision. Once you know which section a chapter feeds, you can pick the right resource. Use Notes for Section A recall and NCERT Solutions for Sections C and D working.
- Section A (16 questions of 1 mark each): MCQs and assertion-reason; tests definitions, named-reaction recall, and reaction-product prediction.
- Section B (5 questions of 2 marks each): Very short answer; one-step questions on named reactions, conversion sequences, and reasoning.
- Section C (7 questions of 3 marks each): Short answer; numerical problems on colligative properties, Nernst equation, kinetics, plus reaction-mechanism questions.
- Section D (2 case-study questions of 4 marks each): Application of coordination chemistry, electrochemistry, or biomolecules to a passage.
- Section E (3 questions of 5 marks each): Long answer; usually one inorganic (d / f-block or coordination), one organic synthesis, and one physical-chemistry problem.
The 70-mark theory paper plus the 30-mark internal assessment (practical, project, viva) make the 100-mark scheme. Internal marks go up as your lab notebook and viva prep improve. The theory paper is where your chapter-wise NCERT work pays off.
Where to Start with the Class 12 Chemistry NCERT Book
For first-time reading, NCERT order is the safest sequence. For revision, the six-chapter shortlist below delivers 40 of 70 board marks:
- Chapter 4, The d- and f-Block Elements (7 marks): the main inorganic chapter of the paper. Lanthanide contraction, magnetic behaviour, and oxidation-state comparison often come as long-answer questions.
- Chapter 5, Coordination Compounds (7 marks): VBT, CFT, and isomerism in coordination complexes appear often in the board paper and score well on NEET.
- Chapter 1, Solutions (7 marks): colligative properties numericals give sure marks. Van't Hoff factor problems test both formula recall and how you apply it.
- Chapter 8, Aldehydes, Ketones and Carboxylic Acids (7 marks): named reactions (Cannizzaro, aldol, Clemmensen, Wolff-Kishner) give 4-5 marks each. This is the main reaction-mechanism chapter in organic chemistry.
- Chapter 2, Electrochemistry (6 marks): Nernst equation problems and conductance calculations are common 3-mark questions.
- Chapter 3, Chemical Kinetics (6 marks): first-order rate-constant problems and half-life calculations become easy once you practise them.
Class 12 Chemistry NCERT Book PDF: Formats and Languages
- HD print-ready PDF: a high-quality scan of the official NCERT print. Good for printing the chapter as a study booklet.
- Standard download PDF: a smaller file size for reading on a phone.
- Hindi-medium NCERT PDF: the official Hindi edition of the same chapter (Rasayan Vigyan). It uses terms like विद्युत रसायन (electrochemistry) and उपसहसंयोजन यौगिक (coordination compound) just as NCERT writes them.
- Combined all-chapters PDF: the full Class 12 Chemistry textbook in one file. Handy for offline classroom use.
- Text-layer searchable: the chapter PDFs have a hidden text layer. The find tool in any standard PDF reader works across chapters.
How the Class 12 Chemistry NCERT Book Pairs with the Other Resources
The NCERT Book is the source text. Pair it with the worked solutions, the notes, and the formula sheet for a full revision kit.
- Class 12 Chemistry NCERT Solutions: the worked-out back-exercise answers. Open them after you try the exercise yourself.
- Class 12 Chemistry Notes: short revision summaries that condense each chapter for your second read.
- Class 12 Chemistry Formula Sheet: equations only, for quick recall in the final week.
- Class 12 Chemistry Exemplar Solutions: worked answers to the harder NCERT Exemplar problems.
- Class 12 Chemistry Exemplar Book PDF: the official NCERT Exemplar Problems book, downloadable chapter-wise.
- Class 12 Chemistry Handwritten Notes: notebook-style revision for the last two weeks before the boards.
How to Use the Class 12 Chemistry NCERT Book Most Effectively
5-STEP METHOD · CBSE TOPPER ROUTINE
How to Use the NCERT Book PDF - Class 12 Chemistry
- 1Read the chapter first. Open the NCERT Book PDF or chapter Notes. This resource assumes you already understand the concepts.
- 2Try each question on your own. Write the working in a notebook before you open the answer. Just reading does not build exam speed.
- 3Compare your working to the resource. Mark every step where your method differed. Those are the spots that lose marks on the board paper.
- 4Flag questions taking over 7 minutes. These go on the re-attempt list for the final-week revision pass.
- 5Read the example boxes first, prose second. The worked examples in the NCERT book show the testable patterns. They are the closest thing to a CBSE marking scheme in the textbook.
- Through the year: read the chapter in NCERT order. Try the in-text and end-of-chapter questions before you open the Solutions.
- 1 month before the boards: re-read every chapter once. Focus on the worked examples and the deleted-content notes.
- 1 week before the boards: open the high-weightage chapters once more. Keep the Formula Sheet with you for last-day recall.
Common Mistakes Class 12 Chemistry Students Make with the NCERT Book
- Writing oxidation states without checking electron count: Chapter 4 students often write Mn(IV) without recalling the d3 configuration. Always check the d-electron count against the oxidation state before you answer.
- Skipping the geometry justification on Coordination questions: Chapter 5 questions reward the geometry-and-magnetism justification. State the hybridisation, the geometry, and the magnetic behaviour (paramagnetic or diamagnetic) in every coordination compound answer.
- Mixing up SN1 and SN2 conditions: Chapter 6 students apply SN2 to tertiary substrates. SN2 is single-step bimolecular and prefers primary substrates; SN1 is two-step unimolecular and prefers tertiary.
- Forgetting Markovnikov's rule on alcohol formation: Chapter 7 students often write the wrong product of acid-catalysed hydration. The OH adds to the more substituted carbon; the H adds to the less substituted one.
- Writing 'aldol' for any base-catalysed reaction: Chapter 8 students label every base-catalysed reaction as an aldol condensation. The aldol step requires alpha-hydrogen; without alpha-hydrogen, the Cannizzaro reaction operates instead.
- Confusing colligative property formulas: Chapter 1 numericals expect the correct formula per property. Relative lowering uses mole fraction, elevation and depression use molality times Kb or Kf, osmotic pressure uses cRT.
- Drawing structural formulas without lone pairs: Chapter 9 amines and Chapter 5 coordination questions both reward the lone-pair-on-nitrogen sketch. Skipping the lone pair on the basicity-comparison answer loses marks.
Student Feedback: What 14,380 Class 12 Chemistry Students Told Us
What 14,380 students told us about their Class 12 Chemistry textbook usage
- 72% of students rated Chapter 5 Coordination Compounds as the highest-effort chapter, ahead of Chapter 4 The d- and f-Block Elements at 61% and Chapter 3 Chemical Kinetics at 49%.
- Most-skipped chapter: Chapter 9 Amines (skipped by ~26% of students, though it carries 5 marks). Toppers said this chapter is worth getting back, because the diazonium salt reactions repeat every year.
- Toppers said the Expert's Solution tab on every Chapter 4 The d- and f-Block Elements problem added 4-6 marks to their 70-mark score. Most of these came from lanthanide-contraction and oxidation-state comparison questions.
- The average Class 12 Chemistry student spent 52 hours across the 10 chapters to finish the NCERT back-exercise once. Chapters 4, 5, 7, and 8 took the most time per question.
Also Check: Related Class 12 Chemistry Resources
- Also Check: CBSE Class 12 Chemistry chapter notes hub on Collegedunia Exams
- Also Check: CBSE Class 12 exam pattern, dates, and full-subject hub
- Also Check: CBSE Class 12 Syllabus 2026-27
- Also Check: JEE Main 2026 exam information
- Also Check: JEE Main 2026 Syllabus
- Also Check: JEE Advanced 2026 information
- Also Check: NEET 2026 exam information
- Also Check: NEET 2026 Syllabus
Topper-tested takeaways for Class 12 Chemistry NCERT Book PDF
- Read the NCERT Book PDF on a tablet or a printout. Reading on a phone at full-page zoom is slower than reading a printout.
- Try every in-text question before you move to the end-of-chapter exercise. The in-text questions sharpen your concept recall.
- Check any deleted-content note against the 2026-27 syllabus before you spend time on it.
- Pair the NCERT Book PDF with the NCERT Solutions for every back-exercise question. The worked solutions show the examiner-style layout CBSE gives marks for.
Class 12 Chemistry NCERT Book PDF FAQs
Ques. Where can I download the Class 12 Chemistry NCERT Book PDF PDF?
Ans. You can download every chapter-wise Class 12 Chemistry NCERT Book PDF from the index above, from Chapter 1 Solutions to Chapter 10 Biomolecules. A combined all-chapters PDF is linked too. Both Normal and HD versions are free.
Ques. Is this Class 12 Chemistry NCERT Book PDF aligned with the 2026-27 NCERT?
Ans. Yes. Every chapter matches the current 2026-27 syllabus. Where NCERT removed content from the older edition, those sections carry an inline note marking the change. This way you do not over-revise dropped topics.
Ques. How many chapters are there in Class 12 Chemistry per the 2026-27 NCERT?
Ans. Class 12 Chemistry has 10 chapters across the CBSE units: Solutions (Ch 1), Electrochemistry (Ch 2), Chemical Kinetics (Ch 3), Coordination & Block Elements (Ch 4, Ch 5), Haloalkanes and Haloarenes (Ch 6), Alcohols, Phenols and Ethers (Ch 7), Aldehydes, Ketones and Carboxylic Acids (Ch 8), Amines (Ch 9), Biomolecules (Ch 10). The Topic Map table above lists every chapter under its unit.
Ques. Which Class 12 Chemistry chapter has the highest CBSE board weightage?
Ans. Inorganic Chemistry (Coordination + d/f Block) is the heaviest unit at 14 marks. The Weightage Snapshot table above shows each chapter's mark share, so you can plan your revision time around the high-scoring chapters.
Ques. How are these Class 12 Chemistry NCERT Book PDF different from the other Class 12 Chemistry resources?
Ans. The Class 12 Chemistry NCERT Book PDF works best with the worked-out NCERT Solutions and the chapter-wise Notes. Each resource on Collegedunia covers the same chapters in a different format. Together they make a full revision kit.
Ques. Are these Class 12 Chemistry NCERT Book PDF files available in Hindi medium?
Ans. Yes. Every chapter comes with a Hindi-medium download next to the English version. The Hindi files use NCERT's own technical terms (Rasayan Vigyan), so Hindi-medium students see the same words they have studied.
Ques. What does Class 12 Chemistry cover?
Ans. Class 12 Chemistry covers 9 CBSE units across 10 chapters: Solutions (Ch 1), Electrochemistry (Ch 2), Chemical Kinetics (Ch 3), Coordination & Block Elements (Ch 4, Ch 5), Haloalkanes and Haloarenes (Ch 6), Alcohols, Phenols and Ethers (Ch 7), Aldehydes, Ketones and Carboxylic Acids (Ch 8), Amines (Ch 9), Biomolecules (Ch 10). The 70-mark theory paper plus the 30-mark internal assessment together make 100 marks.
Ques. Which is the most-scoring chapter in Class 12 Chemistry?
Ans. The chapters in the Inorganic Chemistry (Coordination + d/f Block) block carry the largest share of the 70-mark paper. The six-chapter shortlist in the Where to Start section above together delivers 40 of 70 board marks.
Ques. How should I structure my Class 12 Chemistry preparation?
Ans. Build chapter by chapter and focus on the high-weightage units. Use the Notes for concepts, the NCERT Solutions for the back-exercise, the Exemplar for harder practice, and the Formula Sheet for the last week. The Study Plan section above shows the 1-month, 2-week, and 1-week countdown that most toppers follow.
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