Class 10 ScienceChapter Summaries
13 chapters · Quick revision in under 3 minutes per chapter · Updated 2025-26
Chemical Reactions and Equations
Introduces chemical equations and types of chemical reactions — combination, decomposition, displacement, double displacement, oxidation and reduction. Writing and balancing chemical equations is the core skill.
Topics covered
Acids, Bases and Salts
Covers chemical properties of acids and bases, the pH scale, and formation of salts. Important salts (NaCl, NaHCO₃, Na₂CO₃, bleaching powder) and their uses are frequently asked in board exams.
Topics covered
Metals and Non-metals
Compares physical and chemical properties of metals and non-metals. The reactivity series and its applications (thermite reaction, extraction of metals) are key. Ionic bond formation is introduced.
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Carbon and its Compounds
Covers covalent bonding in carbon compounds, homologous series, and functional groups. Ethanol, ethanoic acid, soaps, and detergents are important applied topics frequently asked in board exams.
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Life Processes
Covers nutrition, respiration, transportation, and excretion in humans and plants. The structure and function of the heart, kidney, and leaf (for photosynthesis) are diagram-heavy topics.
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Control and Coordination
Covers the nervous system (neuron structure, reflex arc, brain regions) and the endocrine system (hormones and their functions) in animals. Movement in plants (tropic and nastic) is also included.
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How do Organisms Reproduce?
Covers asexual and sexual reproduction in plants and animals. Reproduction in humans (male and female reproductive systems) and contraception are included. Puberty and STDs are also covered.
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Heredity
Covers Mendel's laws of inheritance using monohybrid and dihybrid crosses. Chromosomes as carriers of hereditary information, sex determination, and evolution (Darwin's theory) are included.
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⚠️ Removed from 2025-26 syllabus
Evolution chapter merged into Heredity — speciation and molecular phylogeny
Light – Reflection and Refraction
Covers reflection by spherical mirrors (concave and convex) and refraction through lenses (convex and concave). Mirror formula, lens formula, and magnification are key numerical topics.
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The Human Eye and the Colourful World
Covers structure and function of the human eye, defects of vision and their correction, refraction through a glass prism, and dispersion of light. The phenomena of rainbow, atmospheric refraction are also included.
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Electricity
Covers Ohm's law, resistance and resistivity, and series/parallel combination of resistors. Heating effect of current (Joule's law) and electric power are key numerical topics.
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Magnetic Effects of Electric Current
Covers magnetic field due to current in a straight conductor, solenoid, and toroid. Fleming's rules, electric motor, electromagnetic induction, and AC/DC generators are included.
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Our Environment
Covers food chains, food webs, trophic levels, and ecosystem. Ozone layer depletion, management of garbage, and biodegradable vs non-biodegradable waste are environmental topics asked in exams.
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⚠️ Removed from 2025-26 syllabus
Management of natural resources chapter removed from Class 10 syllabus 2025-26
Frequently Asked Questions
Can I revise Class 10 Science in one day using summaries?
Yes. Each chapter summary here takes under 3 minutes to read. With 13 chapters, you can cover all of Class 10 Science 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 10 Science 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 10 Science 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 10 Science 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.