CBSE Class 10/Overview
Curriculum 2026–27
Practice
🔬CBSE Class 10 · Subject Code 086 · Academic Year 2026–27

CBSE Class 10 Science — Complete Curriculum Notes & Practice

Chemical Reactions, Life Processes, Light, Electricity, Magnetic Effects, Carbon & Its Compounds. Complete topic-by-topic concept notes, formulas, step-by-step NCERT derivations, 2,400+ verified questions, and board simulation tests.

Prescribed Modules
14 Chapters
Verified Question Bank
2,400+ Questions
Board Theory Exam
80 Marks (3 Hours)

CBSE Class 10 Science Syllabus & Unit-Wise Marks Distribution (2026–27)

Unit I: Chemical Substances — Nature & Behaviour
Chemical Reactions, Acids Bases Salts, Metals Non-Metals, Carbon & Its Compounds
25 Marks
Unit II: World of Living
Life Processes, Control and Coordination, How do Organisms Reproduce?, Heredity
25 Marks
Unit III: Natural Phenomena
Light — Reflection & Refraction, The Human Eye and the Colourful World
12 Marks
Unit IV: Effects of Current
Electricity, Magnetic Effects of Electric Current
13 Marks
Unit V: Natural Resources
Our Environment
5 Marks

All 14 Chapter Revision Notes & Modules

Select any chapter for in-depth revision notes, NCERT concept formulas, solved examples, and test series.

Chapter 1• 15 min read

Chemical Reactions and Equations

Chemical equations, law of conservation of mass, balancing methods, types of reactions, oxidation-reduction, corrosion, and rancidity.

Explains how chemical changes are represented through balanced equations to satisfy the law of conservation of mass.
Categorizes combination, decomposition, displacement, and redox reactions while exploring daily-life effects like corrosion and rancidity.
Chapter 2• 15 min read

Acids, Bases and Salts

Indicators, chemical properties of acids and bases, pH scale importance in everyday life, and manufacturing of industrial salts.

Examines the characteristic reactions of acids and bases with metals, carbonates, and indicators alongside the universal pH scale.
Covers the preparation, properties, and commercial uses of essential salts including Bleaching Powder, Baking Soda, Washing Soda, and Plaster of Paris.
Chapter 3• 15 min read

Metals and Non-Metals

Physical and chemical properties of metals and non-metals, reactivity series, ionic bonding, metallurgy, and corrosion prevention.

Compares the properties and reactivity series of metals and non-metals to explain how ionic compounds form through electron transfer.
Outlines the metallurgical processes of extraction, roasting, calcination, electrolytic refining, and methods of preventing corrosion.
Chapter 4• 15 min read

Carbon and its Compounds

Covalent bonding, versatile nature of carbon (catenation, tetravalency), homologous series, functional groups, and soaps/detergents.

Explains how tetravalency and catenation enable carbon to form millions of stable covalent chains and rings in homologous series.
Covers IUPAC nomenclature of functional groups, chemical reactions of ethanol and ethanoic acid, and the cleansing action of micelle formation.
Chapter 14• 15 min read
✨Enrichment

Periodic Classification of Elements

Historical developments (Dobereiner, Newlands, Mendeleev), Modern Periodic Law, group and period periodic trends.

Traces the evolution of classification systems from early triads and octaves to Mendeleev's periodic table and Moseley's Modern Periodic Law.
Analyzes periodic trends in atomic size, valency, metallic character, and electronegativity across groups and periods.
Chapter 5• 15 min read

Life Processes

Nutrition (autotrophic, heterotrophic), human digestive system, respiration (aerobic, anaerobic), transportation, and human excretion.

Explores the vital biological mechanisms of autotrophic and heterotrophic nutrition, cellular respiration, and energy release via ATP.
Details internal transportation through the human heart and blood vessels alongside filtration of nitrogenous waste in nephrons.
Chapter 6• 15 min read

Control and Coordination

Nervous system, neuron structure, reflex arc, human brain, plant tropisms, phytohormones, and endocrine glands with hormones.

Describes how electrical impulses travel through neurons, synapses, and the reflex arc to coordinate rapid involuntary responses.
Examines voluntary control in the human brain, directional plant movements via phytohormones, and chemical regulation by endocrine glands.
Chapter 7• 15 min read

How do Organisms Reproduce

Asexual reproduction methods, sexual reproduction in flowering plants, human male and female reproductive systems, and reproductive health.

Compares asexual methods like fission, budding, and spore formation with sexual reproduction in flowering plants.
Details human reproductive anatomy, fertilization, menstrual cycles, and modern barrier, chemical, and surgical contraceptive methods.
Chapter 8• 15 min read

Heredity and Evolution

Mendelian inheritance laws, monohybrid and dihybrid crosses, dominant/recessive traits, and human sex determination mechanism.

Explains Mendel's foundational laws of inheritance through monohybrid and dihybrid phenotypic and genotypic ratios.
Details the chromosomal mechanism of genetic variation, expression of dominant and recessive traits, and XX/XY sex determination in humans.
Chapter 9• 15 min read

Light – Reflection and Refraction

Spherical mirrors, ray diagrams, mirror formula, magnification, laws of refraction, Snell's law, refractive index, lens formula, and power.

Covers image formation rules by concave and convex spherical mirrors and lenses using systematic ray diagrams.
Applies the mirror formula, lens formula, Snell's law of refraction, and optical power calculations to solve numerical problems.
Chapter 10• 15 min read

The Human Eye and the Colourful World

Structure of human eye, accommodation, vision defects (myopia, hypermetropia, presbyopia), dispersion, atmospheric refraction, and scattering.

Explains the anatomy and accommodation of the human eye alongside corrective lens prescriptions for myopia, hypermetropia, and presbyopia.
Analyzes natural optical phenomena including prism dispersion, rainbow formation, atmospheric twinkling of stars, and Rayleigh scattering.
Chapter 11• 15 min read

Electricity

Electric current, potential difference, Ohm's law, factors affecting resistance, series and parallel circuits, Joule's heating, and electric power.

Defines electric current, potential difference, and Ohm's law while analyzing factors that govern conductor resistance and resistivity.
Evaluates series and parallel resistor networks and applies Joule's heating law to domestic appliances, fuses, and commercial energy consumption.
Chapter 12• 15 min read

Magnetic Effects of Electric Current

Magnetic field lines, right-hand thumb rule, solenoid field, Fleming's left-hand rule, electric motor, electromagnetic induction, and domestic circuits.

Explains magnetic field patterns around straight wires, loops, and solenoids using the right-hand thumb rule.
Demonstrates how magnetic forces act on current-carrying conductors in electric motors and outlines domestic circuit safety measures like earthing and fuses.
Chapter 13• 15 min read

Our Environment

Ecosystem components, food chains, food webs, 10 percent energy flow law, biomagnification, ozone layer depletion, and waste management.

Analyzes biotic and abiotic interactions across trophic levels and models energy transfer through the ten percent ecological law.
Examines human impacts on ecosystems including biological magnification, chlorofluorocarbon ozone depletion, and biodegradable waste disposal.

Frequently Asked Questions — CBSE Class 10 Science

How are the 80 marks distributed in Class 10 Science?

Chemical Substances carries 25 marks, World of Living carries 25 marks, Natural Phenomena carries 12 marks, Effects of Current carries 13 marks, and Natural Resources carries 5 marks.

Does Master10 include CBSE Assertion-Reason and Case-Study questions for Science?

Yes, Master10 features 2,400+ topic-wise questions covering Assertion-Reasoning, competency-based case studies, numerical derivations, and experimental reasoning.