Class 12 ChemistryChapter Summaries
14 chapters · Quick revision in under 3 minutes per chapter · Updated 2025-26
The Solid State
Covers types of solids, crystal systems, packing in solids, and defects in crystals. Unit cell calculations and packing efficiency are common numericals.
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Solutions
Covers types of solutions, Raoult's law, colligative properties, and van't Hoff factor. Abnormal molecular masses and determination of molecular masses are key.
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Electrochemistry
Covers electrochemical cells, standard electrode potentials, Nernst equation, conductance, and batteries. Corrosion is also included.
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Chemical Kinetics
Covers rate of reaction, factors affecting rate, rate law, order of reaction, and Arrhenius equation. Integrated rate equations and half-life are key numericals.
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Surface Chemistry
Covers adsorption, catalysis, colloids, and emulsions. Tyndall effect in colloids and Hardy-Schulze rule are important.
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General Principles of Extraction of Elements
Covers principles and methods of extraction — concentration of ores, reduction, and refining. Ellingham diagram is an important concept.
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The p-Block Elements
Covers Group 15 (N, P, As), Group 16 (O, S, Se), Group 17 (halogens), and Group 18 (noble gases). Preparation, properties and uses of important compounds are frequently asked.
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The d and f Block Elements
Covers transition elements and their general characteristics. Lanthanoids and actinoids are also included. Chemical reactions and oxidation states of Cr and Mn are important.
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Coordination Compounds
Covers nomenclature, Werner's theory, VBT, Crystal Field Theory, isomerism, and stability of coordination compounds. IUPAC naming rules are consistently asked.
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Haloalkanes and Haloarenes
Covers nomenclature, preparation, properties and reactions. SN1 vs SN2 mechanisms, optical isomerism, and Grignard reagents are key topics.
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Alcohols, Phenols and Ethers
Covers nomenclature, preparation, and properties. Acidity of phenols and Lucas test for alcohols are frequently asked. Industrial preparation of ethanol and phenol are important.
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Aldehydes, Ketones and Carboxylic Acids
Covers nomenclature, preparation, and reactions of aldehydes, ketones, and carboxylic acids. Aldol condensation, Cannizzaro reaction, and Hell-Volhard-Zelinsky reaction are key.
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Amines
Covers nomenclature, preparation, basicity, and reactions of amines. Diazonium salts and their synthetic importance are included. Comparison of basicity of primary, secondary, tertiary amines is a common question.
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Biomolecules
Covers carbohydrates, proteins, enzymes, vitamins, nucleic acids, and hormones. Classification of carbohydrates and protein structure levels are common board questions.
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Frequently Asked Questions
Can I revise Class 12 Chemistry in one day using summaries?
Yes. Each chapter summary here takes under 3 minutes to read. With 14 chapters, you can cover all of Class 12 Chemistry in a focused 2–3 hour session. Use these summaries to identify gaps — then revisit only those chapters in detail.
Are chapter summaries enough for CBSE Class 12 Chemistry board exam?
Summaries are for revision, not first learning. Use them after you've already studied the chapter — they quickly confirm what you remember and flag what you don't. For first-time study, read the NCERT textbook and work through important questions chapter-by-chapter.
What is covered in Class 12 Chemistry chapter summaries?
Each summary here covers the main concepts of the chapter, key topics that CBSE tests, and important points for the board exam. Deleted topics (removed from the 2025-26 CBSE syllabus) are clearly marked so you don't waste time on content that won't be tested.
What is the fastest way to revise Class 12 Chemistry for CBSE boards?
Read the chapter summary, then immediately close it and try to recall the key topics listed — without looking. Anything you miss, mark for one more read. This active recall method is proven to be 3× more effective than re-reading the textbook, and takes a fraction of the time.