The Class 12 Chemistry NCERT Book PDF (2026-27 syllabus) is the official rationalised textbook, downloadable chapter by chapter as free PDFs. Every chapter below mirrors the print NCERT exactly - worked examples, in-text questions, end-of-chapter exercises, and the deleted-content callouts where NCERT rationalised material out of the older edition.
- Chapters covered: 10 chapters, identical to the printed 2026-27 NCERT
- Format: high-resolution scanned PDFs, chapter-wise and combined
- Length: roughly 250-320 pages combined across all chapters
- Exam alignment: CBSE Class 12 Chemistry theory paper (70 marks), NEET, JEE Main, JEE Advanced
Every chapter in this Class 12 Chemistry NCERT Book PDF compilation is the official 2026-27 rationalised NCERT, downloaded from ncert.nic.in and indexed for easy navigation.
Class 12 Chemistry NCERT Book PDF: All Chapters
Every chapter of the 2026-27 Class 12 Chemistry NCERT, downloadable as a free PDF. The list runs in NCERT order.
Why Download the Class 12 Chemistry NCERT Book PDF?
The NCERT textbook is the single most-cited source for CBSE board questions, JEE Main, and NEET. Working from the NCERT book directly (rather than a third-party guide) is the highest-fidelity way to prepare for any of these exams.
- 2026-27 rationalised edition: matches the current NCERT print exactly. The PDF reflects every chapter that was retained, every section that was simplified, and every topic that was removed.
- Worked examples in the chapter body: every chapter carries solved examples that show NCERT's preferred working style. CBSE markers reward this style.
- In-text questions plus end-of-chapter exercise: the in-text questions sharpen concept understanding while the end-of-chapter exercise drills application. Both are in scope for the boards.
- 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 summarisation. Every chapter is the official NCERT print.
- Bookmark-friendly TOC: the chapter-wise PDFs carry an internal table of contents so you can jump to a specific 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)
How the 10 chapters group into the CBSE units below. Each chapter PDF covers the topics listed 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 NCERT 2026-27 syllabus for Class 12 Chemistry has been rationalised by the examination authority to reduce content load for CBSE Boards, JEE and NEET. The drops listed below are officially out of the 2026-27 question paper, so skip these while revising.
| Chapter | Deleted Topics (2026-27) |
|---|---|
| Solid State (formerly Ch 1) | Full chapter removed in the 2026-27 rationalisation; concepts of 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 rationalised; 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 flag 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 carries forward the rationalisation introduced earlier; the key changes that affect what you should revise are:
- The Solid State (former Ch 1): removed in the 2024-25 rationalisation; unit cells, packing efficiency, and crystal defects are no longer examinable.
- Surface Chemistry (former Ch 5): removed in the 2024-25 rationalisation; adsorption, catalysis, and colloids are no longer examinable.
- General Principles and Processes of Isolation of Elements (former Ch 6): removed; metallurgy operations like froth flotation and leaching are no longer in scope.
- The p-Block Elements (former Ch 7): removed in the 2024-25 rationalisation; nitrogen-family, oxygen-family, 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, modified, or removed from the older edition.
NCERT BOOK PDF · CLASS 12 CHEMISTRY
Class 12 Chemistry - Exam Weightage
Class 12 Chemistry contributes roughly 200 marks combined across CBSE Boards, JEE Main, JEE Advanced and NEET UG, the second-heaviest science load after Physics on the senior-school flagship exams.
Class 12 Chemistry Weightage Snapshot (CBSE 2026 Theory Paper)
The 70-mark CBSE Class 12 Chemistry theory paper splits unevenly across the 10 chapters. Inorganic Chemistry (Coordination + d/f Block) leads the table at 14 marks, roughly 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 is split into five sections. Knowing the section-by-section weight is half the revision plan; once you know which section a chapter feeds, you can pick the right resource (Notes for Section A recall, 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 combined with the 30-mark internal assessment (practical, project, viva) makes the 100-mark scheme. Internal assessment marks scale linearly with lab-notebook completeness and viva preparation; the theory paper is where the chapter-wise NCERT preparation actually shows.
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 inorganic backbone of the paper. Lanthanide contraction, magnetic behaviour, and oxidation-state comparison are routine LA slots.
- Chapter 5, Coordination Compounds (7 marks): VBT, CFT, and isomerism in coordination complexes are board-paper staples and high-yield on NEET.
- Chapter 1, Solutions (7 marks): colligative properties numericals carry guaranteed marks; van't Hoff factor problems test both formula recall and application.
- Chapter 8, Aldehydes, Ketones and Carboxylic Acids (7 marks): named reactions (Cannizzaro, aldol, Clemmensen, Wolff-Kishner) deliver 4-5 marks each. The reaction-mechanism block in organic chemistry.
- Chapter 2, Electrochemistry (6 marks): Nernst equation problems and conductance calculations are routine 3-mark slots.
- Chapter 3, Chemical Kinetics (6 marks): first-order rate-constant problems and half-life calculations are mechanical once practised.
Class 12 Chemistry NCERT Book PDF: Formats and Languages
- HD print-ready PDF: high-resolution scan of the official NCERT print, suitable for printing the chapter as a study booklet.
- Standard download PDF: compressed file size for phone reading.
- Hindi-medium NCERT PDF: the official Hindi-medium edition of the same chapter (Rasayan Vigyan), with terms like विद्युत रसायन (electrochemistry) and उपसहसंयोजन यौगिक (coordination compound) used as NCERT writes them.
- Combined all-chapters PDF: the complete Class 12 Chemistry textbook as a single file, useful for offline classroom use.
- Text-layer searchable: the chapter PDFs carry a hidden text layer so the find function 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 complete revision toolkit.
- Class 12 Chemistry NCERT Solutions: the worked-out back-exercise answers; open them after attempting the exercise yourself.
- Class 12 Chemistry Notes: concept-level revision summaries that condense each chapter for the second-pass reading.
- Class 12 Chemistry Formula Sheet: the equation-only recall layer for 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 publication, downloadable chapter-wise.
- Class 12 Chemistry Handwritten Notes: notebook-style revision for the final 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 - the resource assumes you understand the concepts already.
- 2Attempt each question on your own. Write the working in a notebook before opening the answer - passive reading does not build exam fluency.
- 3Compare your working to the resource. Mark every step where your approach 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 carry the testable patterns - they're the closest thing to a CBSE marking scheme inside the textbook.
- Throughout the year: read the chapter in NCERT order, attempt the in-text and end-of-chapter questions before opening the Solutions.
- 1 month before the boards: re-read every chapter once, focusing on the worked examples and the deleted-content callouts.
- 1 week before the boards: open the high-weightage chapters once more, paired with the Formula Sheet 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 verify the d-electron count against the oxidation state before answering.
- 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 Pulse: 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 despite carrying 5 marks). Toppers flagged this as a high-ROI chapter to reclaim because the diazonium salt reactions repeat year on year.
- Toppers reported that working the Expert's Solution tab on every Chapter 4 The d- and f-Block Elements problem added 4-6 marks to their 70-mark theory paper score, mostly from the 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, with Chapters 4, 5, 7, 8 eating 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 printout; phone reading at full-page zoom is slower than printed reading.
- Attempt every in-text question before moving to the end-of-chapter exercise; the in-text questions sharpen concept recall.
- Cross-check any deleted-content callout against the rationalised 2026-27 syllabus before spending time on it.
- Pair the NCERT Book PDF with the NCERT Solutions for every back-exercise question; the worked solutions show the examiner-style structure CBSE rewards.
Class 12 Chemistry NCERT Book PDF FAQs
Ques. Where can I download the Class 12 Chemistry NCERT Book PDF PDF?
Ans. Every chapter-wise Class 12 Chemistry NCERT Book PDF PDF is downloadable directly from the index above, from Chapter 1 Solutions through Chapter 10 Biomolecules. A combined all-chapters PDF is also linked. Both Normal and HD resolutions are free.
Ques. Is this Class 12 Chemistry NCERT Book PDF aligned with the 2026-27 NCERT?
Ans. Yes. Every chapter reflects the current 2026-27 syllabus. Where NCERT rationalised content out of the older edition, the affected sections carry an inline callout flagging the change so you do not over-revise dropped material.
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 tracks each chapter's mark share so you can plan your revision time around the high-yield 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 is best paired with the worked-out NCERT Solutions and the chapter-wise Notes. Each resource on Collegedunia covers the same chapter list but in a different format; together they make a complete revision toolkit.
Ques. Are these Class 12 Chemistry NCERT Book PDF files available in Hindi medium?
Ans. Yes. Every chapter ships with a Hindi-medium download alongside the English version. The Hindi files follow NCERT's own technical vocabulary (Rasayan Vigyan) so that students preparing in Hindi medium find the same terminology they have studied in.
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, prioritising the high-weightage units. Use the Notes for concepts, the NCERT Solutions for back-exercise, the Exemplar for harder practice, and the Formula Sheet for the last week. The Study Plan section above sketches the 1-month / 2-week / 1-week countdown that most toppers settle into.
Comments