The Class 12 Chemistry Formula Sheet (2026-27 syllabus) puts every formula, named reaction and constant you need in one chapter-wise PDF. It covers the full 70-mark CBSE theory paper.
Class 12 Chemistry Formula Sheet PDF Download
Here is every chapter of the 2026-27 Class 12 Chemistry syllabus. Each row links the Formula Sheet PDF for that chapter.
Use it for last-week revision and the night-before skim. At that stage, reading concepts is too slow and full notes take 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 sheet for all chapters
- Exam alignment: CBSE Class 12 Chemistry theory paper (70 marks), NEET, JEE Main, JEE Advanced
Subject experts build every formula in this Collegedunia Class 12 Chemistry Formula Sheet. Each one is mapped to the 2026-27 NCERT and tagged with the physical meaning or chemical context a CBSE, JEE or NEET examiner looks for.
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. Use it in the final week. It cuts 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, sorted by chapter and unit.
- Plain-meaning notes: every formula has a one-line note on what the symbols mean and when to use it. No bare equations.
- Split by chapter: orange formula boxes sit inside blue chapter headers. You can read a full page in 60 seconds.
- JEE / NEET extras: the few extra formulae that competitive exams test (beyond NCERT) sit in a separate box per chapter.
- Constants and conversion tables: a one-page constants index sits at the front of the combined sheet. It helps when a numerical question names a constant.
- Print-friendly two-column layout: this compact format prints to half the page count of the Notes. It works well as a 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)
Here is how the 10 chapters group into the CBSE units below. Each chapter's Formula Sheet covers the equations 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). |
NCERT Class 12 Chemistry Deleted Syllabus 2026-27
NCERT has trimmed the 2026-27 Class 12 Chemistry syllabus to reduce the 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 in the All Chapters index above already flag every deleted line inline, so you do not waste revision hours on dropped topics.
FORMULA SHEET · CLASS 12 CHEMISTRY
Class 12 Chemistry - Exam Weightage
Class 12 Chemistry carries about 200 marks combined across CBSE Boards, JEE Main, JEE Advanced and NEET UG. That makes it the second-heaviest science load after Physics on the main senior-school exams.
Class 12 Chemistry Weightage Snapshot (CBSE 2026 Theory Paper)
The 70-mark CBSE Class 12 Chemistry theory paper rewards formula recall. You need it for the numerical questions and the derivation slots. Inorganic Chemistry (Coordination + d/f Block) leads 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 each section's weight is half the revision plan. 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): You apply 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) makes the 100-mark scheme. Internal assessment marks rise with lab-notebook completeness and viva prep. The theory paper is where your chapter-wise NCERT work actually shows.
Where to Start with Class 12 Chemistry Formula Sheet
For final-week revision, start with the formula sheets of the six high-weightage chapters. Together they carry 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 common long-answer slots.
- Chapter 5, Coordination Compounds (7 marks): VBT, CFT, and isomerism in coordination complexes appear often on board papers and score well on NEET.
- Chapter 1, Solutions (7 marks): colligative-properties numericals carry sure marks. Van't Hoff factor problems test both formula recall and use.
- Chapter 8, Aldehydes, Ketones and Carboxylic Acids (7 marks): named reactions (Cannizzaro, aldol, Clemmensen, Wolff-Kishner) give 4-5 marks each. This is the reaction-mechanism block in organic chemistry.
- Chapter 2, Electrochemistry (6 marks): Nernst equation problems and conductance sums are common 3-mark slots.
- Chapter 3, Chemical Kinetics (6 marks): first-order rate-constant problems and half-life sums become easy once you practise them.
Class 12 Chemistry Formula Sheet: PDF Formats
- HD print-ready PDF: compact two-column layout with high-resolution text, made for the printed last-week revision booklet.
- Standard download PDF: smaller file size for phone reading.
- Hindi-medium Formula Sheet: chapter-wise Hindi versions using NCERT's own words (Rasayan Vigyan). Terms like विद्युत रसायन (electrochemistry) and उपसहसंयोजन यौगिक (coordination compound) stay exactly 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 come up 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 full revision routine.
- Class 12 Chemistry Notes: open this when you need the why behind a formula. The Formula Sheet carries only the formula.
- Class 12 Chemistry NCERT Solutions: keep the Formula Sheet open while you solve the back-exercise, so unit conversions and constants stay 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. It pairs well with the Formula Sheet for the final week.
- Class 12 Chemistry NCERT Book PDF: the original textbook, for cross-checking how a formula is derived.
- 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.
5-STEP METHOD · CBSE TOPPER ROUTINE
How to Use the Formula Sheet - Class 12 Chemistry
- 1Read the chapter first. Open the NCERT Book PDF or chapter Notes. This sheet assumes you already know the concepts.
- 2Try each question on your own. Write the working in a notebook before you open the answer. Just reading it does not build exam speed.
- 3Compare your working to the answer. 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.
- 5Say the formula list aloud daily for the last 7 days. Five minutes a day in the final week beats one long cram session. Spaced recall is what stays with you in the exam hall.
- 2 weeks before the boards: print the combined Formula Sheet and bind it as a revision booklet. Add your own notes next to the formulae you tend to forget.
- 1 week before the boards: read one chapter's formula sheet each evening. Start with the high-weightage shortlist.
- Night before the boards: skim the constants page and the formulae for the six high-weightage chapters above. In the final 60 minutes, the Formula Sheet is the best thing to read.
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 check the d-electron count against the oxidation state before you answer.
- Skipping the geometry reason on Coordination questions: Chapter 5 questions reward the geometry-and-magnetism reason. In every coordination compound answer, state the hybridisation, the geometry, and the magnetic behaviour (paramagnetic or diamagnetic).
- 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 needs alpha-hydrogen. Without alpha-hydrogen, the Cannizzaro reaction runs instead.
- Confusing colligative property formulas: Chapter 1 numericals need the right formula for each 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. Skip the lone pair on the basicity-comparison answer and you lose marks.
Student Feedback: 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. About 26% of students skip it, even though it carries 5 marks. Toppers say it is worth reclaiming, because the diazonium salt reactions repeat every year.
- Toppers said 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. Most of that came 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. 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 Formula Sheet
- The Inorganic Chemistry (Coordination + d/f Block) formulae deserve their own 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. Once you see how it is derived, the formula sticks.
- Keep the Formula Sheet open while you solve the NCERT back-exercise, so unit conversions stay 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 follows the current 2026-27 syllabus. Where NCERT dropped content from the older edition, those sections carry an inline note about the change. This way 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 shows each chapter's mark share, so you can spend more revision time on the high-yield chapters.
Ques. How are these Class 12 Chemistry Formula Sheet different from the other Class 12 Chemistry resources?
Ans. Pair the Class 12 Chemistry Formula Sheet with the concept layer (Notes) and the back-exercise (NCERT Solutions). Each Collegedunia resource covers the same chapter list in a different format. Together they make a full revision toolkit.
Ques. Are these Class 12 Chemistry Formula Sheet 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 words (Rasayan Vigyan), so Hindi-medium students find the same terms 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 Inorganic Chemistry chapters (Coordination + d/f Block) carry the largest share of the 70-mark paper. The six-chapter shortlist in the Where to Start section above gives 40 of 70 board marks.
Ques. How should I structure my Class 12 Chemistry preparation?
Ans. Build chapter by chapter, and start with 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 lays out the 1-month, 2-week and 1-week countdown that most toppers follow.
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