NCERT Solutions for Class 12 Chemistry (2026-27 syllabus) cover every back-exercise question across all 10 chapters of the rationalised NCERT textbook, mapped to the 70-mark CBSE theory paper plus the latest JEE Main, JEE Advanced, and NEET patterns. Every chapter ships as a free downloadable PDF, and the index below lets you jump straight to any chapter's worked-out solutions.
- Chapters covered: 10 chapters across 9 CBSE units, from Solutions to Biomolecules
- Format: chapter-wise PDFs plus combined all-chapters compilation, all free
- Exam alignment: CBSE Class 12 Chemistry theory paper (70 marks), NEET, JEE Main, JEE Advanced
Every chapter in this Collegedunia Class 12 Chemistry NCERT Solutions compilation is curated by subject experts, mapped to the 2026-27 rationalised NCERT, and refined against the last five years of CBSE Board and JEE / NEET papers.
Class 12 Chemistry NCERT Solutions: All Chapters
Every chapter of the 2026-27 Class 12 Chemistry syllabus, with the chapter-specific NCERT Solutions PDF linked on each row. The list runs in NCERT order so it mirrors the order you would attempt the textbook in.
How will Collegedunia's Class 12 Chemistry NCERT Solutions Help You?
Class 12 Chemistry rewards structured working as much as accuracy. The Class 12 Chemistry NCERT Solutions on this page are written so a student can attempt every back-exercise question across 10 chapters and verify the working step by step, the way an examiner marks it on the CBSE board paper.
- 2026-27 NCERT alignment: every back-exercise question matches the rationalised Class 12 Chemistry syllabus, with deleted-content callouts flagged inline so you do not waste time on dropped exercises.
- Two-tab Solution format per question: a short Solution showing the minimum steps a CBSE examiner expects, plus an expanded Expert's Solution that adds the {comp}-style reasoning with named-reaction mechanisms shown.
- Diagrams, derivations and reactions worked from first principles: every figure relabelled, every reaction mechanism drawn step by step.
- Cross-resource navigation: jump from any solution into the same chapter's Notes, Formula Sheet, Handwritten Notes, or Exemplar Solutions in one click.
- Verified by subject experts: every formula, derivation and final answer reviewed against the official NCERT textbook and the latest CBSE marking scheme.
- Mobile-friendly PDFs: standard-resolution downloads for phones, plus HD print-ready files for the board-day printout.
NCERT Solutions for Class 12 Chemistry
Source: Magnet Brains on YouTube
NCERT Class 12 Chemistry Topic Map (2026-27 NCERT)
How the 10 Class 12 Chemistry chapters group into the CBSE units listed below. Inorganic Chemistry (Coordination + d/f Block) dominates the syllabus at 14 of 70 theory marks; the rest of the units cluster around 4-14 marks each.
| Unit | Chapters | What this unit 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). |
Class 12 Chemistry Weightage Snapshot (CBSE 2026 Theory Paper)
The 70-mark CBSE Class 12 Chemistry theory paper splits unevenly. Inorganic Chemistry (Coordination + d/f Block) leads the table at 14 marks combined, which works out to roughly 20% of the theory paper. The snapshot below uses the official CBSE 2026 blueprint plus the latest sample-paper pattern; the highest-weightage row carries the Collegedunia orange tint.
| 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 in the Class 12 Chemistry NCERT Solutions Index
NCERT order is the safest reading sequence, but a tighter revision window rewards a weightage-first plan. 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.
Together these six chapters cover the bulk of the 70-mark theory paper. The remaining chapters still carry weight but get a single revision pass first; the priority six get two.
Class 12 Chemistry NCERT Solutions: PDF Formats and Languages
Every chapter in the Class 12 Chemistry NCERT Solutions index ships in three flavours plus a Hindi-medium counterpart where the chapter is also in the Hindi-medium NCERT.
- HD print-ready PDF: high-resolution typesetting, recommended for printing as a revision booklet.
- Standard download PDF: smaller file size for phone reading.
- Hindi-medium PDF: chapter-wise Hindi translations using NCERT's own vocabulary (Rasayan Vigyan), with terms like विद्युत रसायन (electrochemistry), उपसहसंयोजन यौगिक (coordination compound), and जैव अणु (biomolecule) preserved as NCERT writes them.
- Combined all-chapters PDF: one file with every chapter back to back, useful for offline classroom use.
- Handwritten counterpart: the same content rendered in notebook-style scanned-look format, useful for final-week revision.
How Class 12 Chemistry NCERT Solutions Pair with the Other Resources
The Class 12 Chemistry NCERT Solutions handle the back-exercise. They are not a substitute for concept revision, formula recall, or harder problem sets; those live in sibling resources that share the same chapter slugs.
- Class 12 Chemistry Notes: the concept revision before you attempt a question. Pair Notes with the Solutions whenever a back-exercise question is built on a derivation or definition you have not seen in a while.
- Class 12 Chemistry Formula Sheet: every formula, equation, and standard named reaction in one compact reference for last-day recall.
- Class 12 Chemistry Exemplar Solutions: worked-out solutions for the harder Exemplar problems beyond the back-exercise. Switch to Exemplar once you can solve the NCERT problems quickly.
- Class 12 Chemistry Handwritten Notes: notebook-style concept revision for the final week before the boards.
- Class 12 Chemistry NCERT Book PDF: the official textbook, with worked examples that use the same notation as the solutions on this page.
- Class 12 Chemistry Exemplar Book PDF: the NCERT Exemplar Problems publication for additional practice.
How to Use the Class 12 Chemistry NCERT Solutions Page Most Effectively
The three-block plan below is the routine most CBSE toppers settle into.
- 1 month before the boards: work the chapter-wise back-exercise in NCERT order, spending extra time on the priority six listed above. Open the Notes alongside whenever a concept slips.
- 2 weeks before the boards: switch to the Expert's Solution tab on every question. Mark every problem you could not crack in under 7 minutes; those are the ones you re-attempt in the final week.
- 1 week before the boards: re-attempt only the marked problems, then close the loop with the Formula Sheet for last-day formula recall. Skim the Handwritten Notes the night before for the board-feel revision.
Common Mistakes NCERT Class 12 Chemistry Students Make Across Chapters
- 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 board prep
- 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 Solutions
- Re-attempt every back-exercise question until your working matches the Solution's step count, not just the final answer.
- When the Solution and the Expert's Solution agree, the question is in scope for boards and competitive exams alike.
- Mark every Solution where your working took longer than the printed steps; those are the questions you revise the night before.
- Pair the Solutions with the Notes for any chapter you have not touched in the last six weeks.
Class 12 Chemistry NCERT Solutions FAQs
Ques. Where can I download the full Class 12 Chemistry NCERT Solutions PDF?
Ans. Every chapter-wise PDF for Class 12 Chemistry NCERT Solutions is downloadable directly from the index above, from Chapter 1 Solutions through Chapter 10 Biomolecules. A combined all-chapters PDF is also available, free in both Normal and HD resolutions.
Ques. Are these Class 12 Chemistry NCERT Solutions aligned with the 2026-27 NCERT?
Ans. Yes. Every chapter on this page reflects the current 2026-27 syllabus. Where NCERT rationalised content out of the older edition (deleted exercises, removed worked examples), the affected solutions 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 the Class 12 Chemistry NCERT Solutions different from the Notes and Formula Sheet?
Ans. The Class 12 Chemistry NCERT Solutions work every back-exercise question end to end; the Notes condense each chapter's concepts for revision; the Formula Sheet strips out everything except equations for last-day recall. Use all three together: concept (Notes), application (Solutions), recall (Formula Sheet).
Ques. Are these Class 12 Chemistry NCERT Solutions useful for JEE and NEET?
Ans. Yes. The Expert's Solution tab on every question shows the longer {comp}-style working with named reactions and mechanisms drawn step by step. Class 12 Chemistry is the foundation chapter set for JEE Main Chemistry (around 30 marks) and NEET Chemistry (around 45 marks); the NCERT Solutions are the recommended starting point.
Ques. Are Class 12 Chemistry NCERT Solutions available in Hindi medium?
Ans. Yes. Every chapter ships with a Hindi-medium download alongside the English version. The Hindi solutions follow NCERT's own technical vocabulary (Rasayan Vigyan) so that students preparing in Hindi medium for the CBSE boards find the same terminology they have studied in.
Ques. Should I read the chapter first or jump straight to the NCERT Solutions?
Ans. Read the chapter first. The Class 12 Chemistry NCERT Solutions are written assuming you understand the concepts; they show you the application, not the derivation. If the chapter is fresh, open the Notes for revision before attempting the back-exercise, then use the Solutions to verify your working.
Ques. How many pages is the full Class 12 Chemistry NCERT Solutions PDF?
Ans. The combined all-chapters PDF runs approximately 220-280 pages depending on the figure density of each chapter. Chapter-wise PDFs range from around 14 pages for the lighter chapters up to roughly 38 pages for the heaviest.
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. Among individual chapters, the priority six listed in the Where to Start section above together deliver 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.
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