Courses
By Ankit Gupta
|
Updated on 25 Jun 2026, 12:21 IST
Class 10 Science is one of the most important subjects for CBSE board exam preparation. It includes key concepts from Physics, Chemistry, Biology, and Environmental Science. To help students revise quickly and prepare with confidence, Infinity Learn provides CBSE Class 10 Science Notes 2026-27 in a chapter-wise format.
These CBSE Class 10 Science notes help students revise each chapter in a clear and structured way. The notes cover important definitions, formulas, diagrams, chemical reactions, key points, and exam-focused concepts for school tests, pre-boards, and board exam preparation.
The notes are updated according to the latest CBSE Class 10 Science syllabus for the 2026-27 academic session. Students can use them for school exams, pre-board exams, board exam revision, and quick last-minute preparation.
The table below includes the latest chapter-wise CBSE Class 10 Science Notes for the 2026-27 session. Click on each chapter to revise important concepts, formulas, diagrams, and exam-based questions.
Syllabus update: The main CBSE Class 10 Science notes list now includes 13 board-focused chapters. Older chapter names such as Heredity and Evolution, Electrostatics and Electricity, Sources of Energy, Management of Natural Resources, and Periodic Classification of Elements should not be used as main current-syllabus chapter entries.
Infinity Learn’s Class 10 Science notes are prepared to make revision easier, faster, and more exam-focused. These notes help students understand NCERT concepts in simple language and revise important points before tests and board exams.
1. Chapter-wise revision
Each chapter is arranged separately so students can revise one topic at a time without confusion.
2. Based on NCERT and CBSE syllabus
The notes follow the latest CBSE Class 10 Science syllabus and NCERT chapter flow.
3. Useful for quick revision
Students can revise definitions, formulas, diagrams, reactions, and key points quickly before exams.
4. Helps in board exam preparation
The notes include important concepts that are useful for MCQs, short answers, long answers, assertion-reason questions, and case-based questions.
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
5. Covers Physics, Chemistry, Biology, and Environment
All major areas of Class 10 Science are covered in one place for complete exam preparation.
This chapter explains chemical reactions, chemical equations, balanced equations, and different types of reactions. Students should revise combination, decomposition, displacement, double displacement, oxidation, reduction, corrosion, and rancidity.
This chapter covers acids, bases, indicators, pH scale, neutralisation, and important salts such as baking soda, washing soda, bleaching powder, plaster of Paris, and sodium hydroxide.
This chapter explains the physical and chemical properties of metals and non-metals. Important topics include reactivity series, ionic compounds, metallurgy, corrosion, and prevention of corrosion.
This chapter focuses on covalent bonding, hydrocarbons, homologous series, functional groups, ethanol, ethanoic acid, soaps, and detergents. It is important for concept-based and reaction-based questions.
This Biology chapter explains nutrition, respiration, transportation, and excretion in plants and animals. Students should practise diagrams and process-based answers from this chapter.
This chapter explains how plants and animals respond to changes. Important topics include the nervous system, reflex action, human brain, plant hormones, and animal hormones.
This chapter covers asexual reproduction, sexual reproduction, reproduction in flowering plants, human reproductive system, and reproductive health.
This chapter explains how traits are passed from parents to offspring. Students should revise Mendel’s experiments, dominant and recessive traits, monohybrid cross, variation, and sex determination.
This chapter explains reflection, refraction, spherical mirrors, spherical lenses, mirror formula, lens formula, magnification, refractive index, and power of a lens. Students should practise ray diagrams and numericals.
This chapter explains the structure of the human eye, defects of vision, correction of vision defects, prism, dispersion of light, atmospheric refraction, and scattering of light.
This is an important numerical-based chapter. Students should revise electric current, potential difference, resistance, resistivity, Ohm’s Law, series and parallel combinations, heating effect of current, and electric power.
This chapter explains magnetic fields, field lines, magnetic field due to current, solenoid, force on a current-carrying conductor, Fleming’s Left-Hand Rule, AC, DC, and domestic electric circuits.
This chapter explains ecosystems, food chains, food webs, trophic levels, energy flow, biodegradable waste, non-biodegradable waste, and ozone layer depletion.
The CBSE Class 10 Science theory paper is of 80 marks. Internal assessment carries 20 marks, making the total 100 marks.
| Unit No. | Unit Name | Marks |
| I | Chemical Substances – Nature and Behaviour | 25 |
| II | World of Living | 25 |
| III | Natural Phenomena | 12 |
| IV | Effects of Current | 13 |
| V | Natural Resources | 5 |
| Theory Total | 80 | |
| Internal Assessment | 20 | |
| Grand Total | 100 |
The highest weightage units are:
Students should give extra attention to Chemistry and Biology chapters, but they should not ignore Physics and Environment because numerical, diagram-based, and case-based questions can come from any unit.
| Formula | Use |
| 1/f = 1/v + 1/u | Mirror formula |
| 1/f = 1/v - 1/u | Lens formula |
| m = -v/u | Magnification by mirror |
| m = v/u | Magnification by lens |
| P = 1/f | Power of lens |
| Formula | Use |
| V = IR | Ohm’s Law |
| R = V/I | Resistance |
| P = VI | Electric power |
| P = I²R | Power formula |
| P = V²/R | Power formula |
| R = R₁ + R₂ + R₃ | Resistance in series |
| 1/R = 1/R₁ + 1/R₂ + 1/R₃ | Resistance in parallel |
Students should practise neat and labelled diagrams because diagrams are important for scoring well in Science.
Important diagrams include:
CBSE Class 10 Science papers include questions that test understanding, application, analysis, and problem-solving skills. Students should prepare for objective questions, assertion-reason questions, short answer questions, long answer questions, source-based questions, case-based questions, passage-based questions, and integrated assessment questions.
To prepare for competency-based questions, students should:
Students can follow this simple study plan:
Some older Class 10 Science pages still show outdated chapter names. Students should follow the latest CBSE syllabus while preparing for board exams.
| Old Syllabus | Updated Action |
| Heredity and Evolution Class 10 Notes | Use Heredity Class 10 Notes as the main chapter |
| Electrostatics and Electricity Class 10 CBSE Notes | Use Electricity Class 10 CBSE Notes |
| Management of Natural Resources Class 10 Notes | Remove from main chapter-wise notes table |
| Sources of Energy Class 10 Notes | Remove from main chapter-wise notes table |
| Periodic Classification of Elements Class 10 Notes | Do not show as a main board-focused chapter |
Use these CBSE Class 10 Science Notes 2026-27 as a quick revision resource along with NCERT. Revise one chapter at a time, practise diagrams and formulas daily, and solve sample papers to improve speed, accuracy, and confidence before the board exam.
No courses found
Students can download chapter-wise CBSE Class 10 Science Notes PDF from Infinity Learn website. The notes are arranged according to the latest Class 10 Science syllabus and NCERT chapter sequence.
NCERT Class 10 Science notes are very useful for quick revision, but students should also read the NCERT textbook, solve NCERT questions, practise diagrams, revise formulas, and attempt sample papers.
There are 13 main board-focused chapters in CBSE Class 10 Science for the 2026-27 academic session, covering Chemistry, Biology, Physics, and Environmental Science.
Older chapters such as Sources of Energy and Sustainable Management of Natural Resources should be removed from the main Class 10 Science theory notes list. Periodic Classification of Elements and Evolution should not be treated as separate year-end theory chapters.
For board-focused revision, the chapter should be listed as Heredity. Students should revise Mendel’s laws, inheritance of traits, variation, and sex determination. Evolution should not be included as a core year-end theory topic.
CBSE gives 25 marks each to Unit I Chemical Substances – Nature and Behaviour and Unit II World of Living. These are the highest-weightage units in the Class 10 Science theory paper.
To score 95+ in Class 10 Science, read NCERT thoroughly, revise chapter-wise notes, practise diagrams, memorise formulas, solve numericals, write chemical equations correctly, and attempt sample papers regularly.
Yes. Short notes help students revise definitions, formulas, diagrams, reactions, and key concepts quickly before school tests, pre-boards, and board exams.
Important chapters include Chemical Reactions and Equations, Carbon and Its Compounds, Life Processes, Heredity, Light – Reflection and Refraction, Electricity, Magnetic Effects of Electric Current, and Our Environment. However, students should revise all chapters because questions can be asked from any unit.
Yes. These CBSE Class 10 Science Notes cover Chemistry, Biology, Physics, and Environmental Science chapters according to the latest CBSE and NCERT structure.