The Class 12 Chemistry NCERT Exemplar Solutions (2026-27 syllabus) are worked-out answers to every MCQ, MCQ-II, VSA, SA, and LA problem in the NCERT Exemplar Problems publication. Each chapter ships as a free downloadable PDF with the step-by-step working a JEE / NEET aspirant needs to crack the harder Exemplar problem set.
- Chapters covered: 10 chapters, identical numbering to the main NCERT textbook
- Format: chapter-wise PDFs with one worked solution per Exemplar problem
- Question coverage: every MCQ, MCQ-II, VSA, SA, and LA problem from the official NCERT Exemplar publication
- Exam alignment: CBSE Class 12 Chemistry theory paper (70 marks), NEET, JEE Main, JEE Advanced
Every solution in this Collegedunia Class 12 Chemistry NCERT Exemplar Solutions compilation is curated by subject experts, mapped to the 2026-27 NCERT Exemplar, and refined against the JEE / NEET-style working patterns examiners reward.
Class 12 Chemistry NCERT Exemplar Solutions: All Chapters
Every chapter of the 2026-27 Class 12 Chemistry NCERT Exemplar, with the chapter-specific worked-solutions PDF linked on each row.
How will Collegedunia's Class 12 Chemistry NCERT Exemplar Solutions Help You?
The Exemplar Solutions take you beyond the NCERT back-exercise into the conceptual depth competitive exams test. Used after the back-exercise and before mock tests, they bridge the gap between board-level fluency and competitive-exam readiness.
- Every Exemplar problem worked end to end: MCQ, MCQ-II (multi-correct), VSA, SA, and LA - every question in the official NCERT Exemplar publication carries a worked solution.
- 2026-27 NCERT Exemplar alignment: every solution matches the latest Exemplar print; rationalised content is flagged with an inline callout.
- Two-tab Solution format: a short Solution showing the minimum working a board examiner expects, plus an expanded Expert's Solution showing the longer, competitive-exam-style reasoning.
- Alternative methods shown: wherever a problem admits more than one approach, both methods are sketched so you can pick the one that matches your working style.
- Cross-resource navigation: jump from any Exemplar Solution into the same chapter's Notes, NCERT Solutions, Formula Sheet, or Handwritten Notes in one click.
- Verified by subject experts: every solution reviewed against the official Exemplar key and the latest JEE / NEET marking patterns.
What 14,380 students told us about their Class 12 Chemistry Exemplar Solutions usage
Source: Magnet Brains on YouTube
Class 12 Chemistry NCERT Exemplar Solutions Topic Map (Coverage)
How the 10 Exemplar chapters group into the CBSE units below. The Exemplar Solutions cover every problem in the source Exemplar publication, in NCERT order.
| Unit | Chapters | What this unit Exemplar Solutions cover |
|---|---|---|
| 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.
Class 12 Chemistry Chapter-wise Important Questions
The five chapter clusters below carry the bulk of the CBSE 2026 Class 12 Chemistry paper and repeat almost every year. The first column lists the long-answer topics that recur as 3-mark and 5-mark questions; the second column lists the application-level questions that appear as 1-3 mark numericals / MCQs / case-studies in CBSE and JEE Main / NEET.
| Chapter Cluster | Important Derivations / Reactions (3-5 marks) | Important Numericals (1-3 marks) |
|---|---|---|
| Physical Chemistry (Ch 1-3) | 1. Raoult's law and ideal-solution derivation. 2. Nernst equation for EMF calculation. 3. Integrated rate law for first-order kinetics. | Molarity / molality / mole fraction, EMF and standard electrode potential, half-life and rate constant. |
| Inorganic - p-Block & d-f Block (Ch 4-5, 7-8) | 1. Lanthanoid contraction and consequences. 2. Werner's theory and ligand-classification. 3. Structure and bonding in interhalogen compounds. | Magnetic moment, calculation of formal charge, ionic-radius vs atomic-number trend. |
| Coordination Compounds (Ch 5) | 1. IUPAC nomenclature of complex ions. 2. Geometric and optical isomerism examples. 3. CFT splitting in octahedral and tetrahedral complexes. | Magnetic moment from unpaired electrons, oxidation state of central atom, EAN calculation. |
| Organic - Carbonyl & Carboxylic Acids (Ch 8) | 1. Aldol condensation mechanism. 2. Cannizzaro reaction with mechanism. 3. Acidity comparison of carboxylic acids vs phenols. | Equivalent weight, percentage yield, distinguishing tests between aldehydes / ketones / carboxylic acids. |
| Organic - Amines, Biomolecules & Polymers (Ch 9-10) | 1. Hofmann's bromamide reaction mechanism. 2. Carbylamine reaction for primary amines. 3. Structure of nucleotides / nucleosides. | Distinguishing tests for 1°, 2°, 3° amines; carbohydrate identification (Benedict / Tollens). |
The same five clusters appear in JEE Main 2026 and NEET UG 2026 with a near-identical question split - JEE Main leans on physical-chemistry numericals while NEET front-loads inorganic-chemistry MCQs. The Expert's Solution tab on each chapter page works the JEE / NEET-style alternative path alongside the CBSE board-style minimum-steps version.
EXEMPLAR SOLUTIONS · 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)
Exemplar Solutions effort scales with chapter weightage. Inorganic Chemistry (Coordination + d/f Block) delivers 14 marks of the 70-mark paper - also where the bulk of the harder Exemplar problems sit.
| 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 Exemplar Solutions Index
Start with the six high-weightage chapters where worked Exemplar practice delivers the largest competitive-exam mark boost. Together these six chapters cover 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 Exemplar Solutions PDF Formats
- HD print-ready PDF: high-resolution typesetting for the printed problem-and-solution booklet.
- Standard download PDF: smaller file size for phone reading.
- Hindi-medium Exemplar Solutions PDF: chapter-wise Hindi translations using NCERT's own technical vocabulary (Rasayan Vigyan).
- Combined all-chapters PDF: one file with every chapter's Exemplar Solutions back to back.
- MCQ key + worked solutions: the MCQ key sits at the front of each chapter's PDF for quick verification, with the full worked solutions following.
How Class 12 Chemistry NCERT Exemplar Solutions Pair with the Other Resources
- Class 12 Chemistry Exemplar Book PDF: the source problem set; open this alongside the Solutions for the question text.
- Class 12 Chemistry NCERT Solutions: the back-exercise worked answers; finish these first before opening the Exemplar.
- Class 12 Chemistry Notes: the concept layer; revisit whenever an Exemplar problem reveals a concept gap.
- Class 12 Chemistry Formula Sheet: keep this open while attempting Exemplar problems so formula recall is one glance away.
- Class 12 Chemistry NCERT Book PDF: the main textbook; cross-check derivations when an Exemplar problem references a textbook result.
- Class 12 Chemistry Handwritten Notes: notebook-style revision between Exemplar problem-solving sessions.
How to Use the Class 12 Chemistry NCERT Exemplar Solutions Most Effectively
5-STEP METHOD · CBSE TOPPER ROUTINE
How to Use the Exemplar Solutions - 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.
- 5Mark every question that took over 10 minutes. Those are the ones worth a third pass in the final week - Exemplar problems repeat ideas, so the slow ones today become quick ones a fortnight later.
- After each chapter's back-exercise: attempt the Exemplar problems on your own first, then compare your working against the Solutions.
- Within 2 months of JEE / NEET: work every SA and LA Exemplar problem of the high-weightage chapters. Use the Expert's Solution tab for the longer working.
- 1 month before the boards: revisit the marked-difficult Exemplar problems and re-verify against the Solutions.
- Skip in the final week: Exemplar Solutions are too long for night-before revision; switch to the Notes and Formula Sheet at that point.
Common Mistakes Class 12 Chemistry Students Make with NCERT Exemplar Solutions
- 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 Exemplar Solutions 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 Exemplar Solutions
- Attempt every Exemplar problem on your own first; the Solutions are a verification tool, not a teaching tool.
- When the Expert's Solution differs from your method, write both in your notebook side by side; the comparison locks in the alternative approach.
- For JEE / NEET, focus the SA and LA Exemplar Solutions on the high-weightage chapters first; the MCQ and MCQ-II sections come second.
- The Exemplar Solutions cover every problem in the Exemplar Book PDF; cross-link by chapter when you find a Solution unclear and need the textbook's worked example for context.
Class 12 Chemistry Exemplar Solutions FAQs
Ques. Where can I download the Class 12 Chemistry Exemplar Solutions PDF?
Ans. Every chapter-wise Class 12 Chemistry Exemplar Solutions 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 Exemplar Solutions 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 Exemplar Solutions different from the other Class 12 Chemistry resources?
Ans. The Class 12 Chemistry Exemplar Solutions is best paired with the Exemplar Book PDF for the source problems and the Notes for the concept refresher. 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 Exemplar Solutions 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.
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