NIOS Class 10Subject library

NIOS Class 10 Science

Chapter-wise notes, previous year papers, sample papers and Q&A for NIOS Class 10 science — free, syllabus-aligned, exam-ready.

13 chapters~310 min read totalFree · printable

Chapters

13 chapters — sequenced for revision and exam prep.

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Chemical Reactions and Equations

Chemical Reactions and Equations — types of reactions (combination, decomposition, displacement, double displacement, redox). Balancing equations. Oxidation, reduction, corrosion, rancidity. CBSE Class 10 Science Chapter 1.

CBSE⏱ 25 minRead chapter

Acids, Bases and Salts

Acids, Bases and Salts — definitions, properties, indicators, pH scale, neutralisation, common acids and bases, salts and their uses (washing soda, baking soda, bleaching powder, plaster of paris). CBSE Class 10 Science Chapter 2.

CBSE⏱ 24 minRead chapter

Metals and Non-metals

Metals and Non-metals — physical and chemical properties, reactivity series, ionic compounds, extraction of metals from ores, corrosion and prevention. CBSE Class 10 Science Chapter 3.

CBSE⏱ 24 minRead chapter

Carbon and its Compounds

Carbon and its Compounds — covalent bonding, versatile nature of carbon (catenation and tetravalency). Saturated/unsaturated hydrocarbons, functional groups, IUPAC nomenclature, soaps and detergents. CBSE Class 10 Science Chapter 4.

CBSE⏱ 25 minRead chapter

Life Processes

Life Processes — nutrition, respiration, transportation, excretion in plants and animals. Detailed study of digestive, respiratory, circulatory, and excretory systems. CBSE Class 10 Science Chapter 5.

CBSE⏱ 28 minRead chapter

Control and Coordination

Control and Coordination — nervous system (CNS, PNS, neurons), human brain, reflex action, endocrine system, hormones (insulin, adrenaline, thyroxine). Plant hormones (auxins, gibberellins, cytokinins, abscisic acid). CBSE Class 10 Science Chapter 6.

CBSE⏱ 22 minRead chapter

How do Organisms Reproduce?

How do Organisms Reproduce — sexual and asexual reproduction. Modes of asexual (binary fission, budding, fragmentation, spore formation, vegetative propagation). Sexual reproduction in plants and humans. Reproductive health. CBSE Class 10 Science Chapter 7.

CBSE⏱ 22 minRead chapter

Heredity

Heredity — Mendel's laws of inheritance, dominant and recessive traits, sex determination in humans. Note: Evolution chapter removed in 2025-26 rationalisation. CBSE Class 10 Science Chapter 8.

CBSE⏱ 20 minRead chapter

Light - Reflection and Refraction

Light - Reflection and Refraction — laws of reflection, spherical mirrors (concave, convex), mirror formula, magnification. Refraction laws, Snell's law, refractive index, lens formula. CBSE Class 10 Science Chapter 9.

CBSE⏱ 26 minRead chapter

Human Eye and Colourful World

Human Eye and Colourful World — structure of human eye, defects of vision (myopia, hypermetropia, presbyopia), correction with lenses. Refraction of light through prism, dispersion of white light, atmospheric refraction, scattering of light. CBSE Class 10 Science Chapter 10.

CBSE⏱ 22 minRead chapter

Electricity

Electricity — electric current, potential difference, Ohm's law, resistance, series and parallel circuits, heating effect, electric power. CBSE Class 10 Science Chapter 11.

CBSE⏱ 26 minRead chapter

Magnetic Effects of Electric Current

Magnetic Effects of Electric Current — magnetic field, Oersted's discovery, magnetic field due to current-carrying conductors (straight wire, loop, solenoid), force on current-carrying conductor in magnetic field, electric motor, electromagnetic induction, electric generator, AC and DC. CBSE Class 10 Science Chapter 12.

CBSE⏱ 24 minRead chapter

Our Environment

Our Environment — ecosystem, food chain, food web, trophic levels, energy flow, biological magnification. Ozone layer depletion, waste management, sustainable practices. CBSE Class 10 Science Chapter 13.

CBSE⏱ 22 minRead chapter