The Class 12 Chemistry Formula Sheet (2026-27 syllabus) consolidates every formulae, named reactions and constants you need for the 70-mark CBSE theory paper into a chapter-wise quick-recall PDF. The format is built for the last-week revision pass and the night-before-the-paper skim, when concept reading is too slow and full notes too long.
- Chapters covered: 10 chapters across 9 CBSE units, identical numbering to the main NCERT textbook
- Format: compact 2-column PDF with orange formula boxes and blue section headers
- Length: 5 to 9 pages per chapter, plus a 14 to 22-page combined all-chapters sheet
- Exam alignment: CBSE Class 12 Chemistry theory paper (70 marks), NEET, JEE Main, JEE Advanced
Every formula in this Collegedunia Class 12 Chemistry Formula Sheet is curated by subject experts, mapped to the 2026-27 rationalised NCERT, and tagged with the physical meaning or chemical context a CBSE / JEE / NEET examiner looks for.
Class 12 Chemistry Formula Sheet: All Chapters
Every chapter of the 2026-27 Class 12 Chemistry syllabus, with the chapter-specific Formula Sheet PDF linked on each row.
How will Collegedunia's Class 12 Chemistry Formula Sheet Help You?
The Class 12 Chemistry Formula Sheet is the recall layer of your revision toolkit. Used in the final week, it shortens the time from "I need a formula" to "I have the formula" from minutes to seconds.
- Every NCERT formula in one place: every formula, derivation result, and standard reaction from the 10-chapter Class 12 Chemistry syllabus, organised by chapter and unit.
- Physical-meaning glosses: every formula carries a one-line gloss on what the symbols mean and when to apply the formula - no naked equations.
- Sectioned by chapter: orange formula boxes inside blue chapter headers; the visual hierarchy reads in 60 seconds per page.
- JEE / NEET extensions: the few extra formulae that competitive exams test (beyond NCERT) are flagged in a separate box per chapter.
- Constants and conversion tables: a one-page constants index at the front of the combined sheet, useful when a numerical question references a constant by name.
- Print-friendly two-column layout: the compact format prints to half the page count of the Notes; useful for the printed last-week revision booklet.
What 14,380 students told us about their Class 12 Chemistry formula-recall routine
Source: Magnet Brains on YouTube
Class 12 Chemistry Topic Map (Formula Sheet Coverage)
How the 10 chapters group into the CBSE units below. Each chapter's Formula Sheet covers the equations listed in NCERT order.
| Unit | Chapters | What this unit formulae 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). |
Class 12 Chemistry Weightage Snapshot (CBSE 2026 Theory Paper)
The 70-mark CBSE Class 12 Chemistry theory paper rewards formula recall on the numerical questions and on the derivation slots. 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 in the Class 12 Chemistry Formula Sheet Index
For final-week revision, prioritise the formula sheets of the six high-weightage chapters; together they account for 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 Formula Sheet: PDF Formats
- HD print-ready PDF: two-column compact layout, high-resolution typesetting, optimised for the printed last-week revision booklet.
- Standard download PDF: smaller file size for phone reading.
- Hindi-medium Formula Sheet: chapter-wise Hindi translations using NCERT's own vocabulary (Rasayan Vigyan); terms like विद्युत रसायन (electrochemistry) and उपसहसंयोजन यौगिक (coordination compound) are preserved as NCERT writes them.
- Combined all-chapters sheet: one ~14 to 22-page file with every chapter back to back.
- Constants quick reference: the front page of the combined sheet lists the constants and conversion factors that recur across chapters.
How Class 12 Chemistry Formula Sheet Pairs with the Other Resources
The Formula Sheet is the recall layer. Pair it with the Notes (concept layer) and the NCERT Solutions (application layer) for a complete revision routine.
- Class 12 Chemistry Notes: open this when you need the why behind a formula; the Formula Sheet only carries the formula itself.
- Class 12 Chemistry NCERT Solutions: keep the Formula Sheet open while attempting the back-exercise so unit conversions and constants are one glance away.
- Class 12 Chemistry Exemplar Solutions: the harder problem set; the Formula Sheet covers every formula those problems use.
- Class 12 Chemistry Handwritten Notes: notebook-style revision; pairs naturally with the Formula Sheet for the final week.
- Class 12 Chemistry NCERT Book PDF: the original textbook for cross-checking a formula's derivation.
- Class 12 Chemistry Exemplar Book PDF: the source for the harder problems the Formula Sheet supports.
How to Use the Class 12 Chemistry Formula Sheet Most Effectively
The Formula Sheet is a recall tool, not a teaching tool. Use it in the second half of your revision cycle.
- 2 weeks before the boards: print the combined Formula Sheet and bind it as a revision booklet. Add personal annotations against the formulae you tend to forget.
- 1 week before the boards: read one chapter's formula sheet per evening, focusing on the high-weightage shortlist first.
- Night before the boards: skim the constants page and the formulae for the six high-weightage chapters above. The Formula Sheet is the highest-ROI pre-exam read in the final 60 minutes.
Common Mistakes Class 12 Chemistry Students Make When Using Formula Sheets
- 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 formula-recall routine
- 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 Formula Sheet
- The Inorganic Chemistry (Coordination + d/f Block) formulae deserve a separate one-page pull-out; print the chapter's Formula Sheet at A5 size and tape it inside your notebook.
- On exam day, the morning skim covers only constants and the high-weightage chapters; never try to learn a new formula in the last 30 minutes.
- Cross-check every Formula Sheet entry against the NCERT Book PDF derivation at least once; understanding the derivation locks the formula in.
- Keep the Formula Sheet open while attempting the NCERT back-exercise so unit conversions are one glance away.
Class 12 Chemistry Formula Sheet FAQs
Ques. Where can I download the Class 12 Chemistry Formula Sheet PDF?
Ans. Every chapter-wise Class 12 Chemistry Formula Sheet 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 Formula Sheet 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 Formula Sheet different from the other Class 12 Chemistry resources?
Ans. The Class 12 Chemistry Formula Sheet is best paired with the concept layer (Notes) and the back-exercise (NCERT Solutions). 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 Formula Sheet 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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