West Bengal (WBBSE)Class 9Subject library

West Bengal (WBBSE) Class 9 Science

Chapter-wise notes, previous year papers, sample papers and Q&A for West Bengal (WBBSE) Class 9 science — free, syllabus-aligned, exam-ready.

12 chapters~465 min read totalFree · printable

Chapters

12 chapters — sequenced for revision and exam prep.

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NCERT chapters — we haven't confirmed West Bengal (WBBSE)'s prescribed textbook

Several state boards have adopted NCERT books outright and others have not. We won't guess. Check the chapter names against your own textbook, and tell us if they differ.

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Matter in Our Surroundings

From the air you breathe to the ice in your glass — everything around you is matter. Class 9 Matter in Our Surroundings with the particle theory, the three classical states, the curious fourth and fifth states (plasma and Bose-Einstein condensate), latent heat, evaporation, and 25+ exam-style problems with full step-by-step solutions.

CBSE⏱ 35 minRead chapter

Is Matter Around Us Pure?

Almost nothing in everyday life is chemically "pure" — your air is a mixture, your milk is a colloid, your salt water is a solution. Class 9 Is Matter Around Us Pure? distinguishes pure substances, mixtures, solutions, suspensions, colloids; the Tyndall effect; concentration calculations; and separation techniques with 20+ exam-style problems.

CBSE⏱ 30 minRead chapter

Atoms and Molecules

The atom is the indivisible building block — except when it isn't. Class 9 Atoms and Molecules with Dalton's atomic theory, laws of chemical combination, atomic and molecular masses, the mole concept, Avogadro's number, formula writing, and 25+ exam-style numericals with full step-by-step solutions.

CBSE⏱ 40 minRead chapter

Structure of the Atom

Dalton thought atoms were indivisible. He was wrong. Class 9 Structure of the Atom covers Thomson's plum-pudding model, Rutherford's gold-foil experiment, Bohr's planetary atom, the discovery of the neutron, electron-configuration rules, isotopes & isobars, valency and 25+ exam-style problems with full step-by-step solutions.

CBSE⏱ 40 minRead chapter

The Fundamental Unit of Life

Every living organism — from a bacterium to a blue whale — is built from cells. Class 9 The Fundamental Unit of Life covers cell theory, discovery of cells, prokaryotes vs eukaryotes, plant vs animal cells, the structure & function of every cell organelle, osmosis and diffusion in cells, with 20+ exam-style problems and step-by-step explanations.

CBSE⏱ 35 minRead chapter

Tissues

A leaf isn't just one kind of cell repeated — it's a team. Class 9 Tissues covers plant tissues (meristematic, simple permanent, complex permanent — xylem, phloem) and animal tissues (epithelial, connective, muscular, nervous) with structures, locations, functions and 20+ exam-style diagram and identification problems.

CBSE⏱ 35 minRead chapter

Motion

How fast? In what direction? How far? Class 9 Motion covers reference frames, distance vs displacement, speed vs velocity, acceleration, three equations of motion derived graphically, uniform circular motion, and 25+ exam-style numericals with full step-by-step solutions and worked graph problems.

CBSE⏱ 45 minRead chapter

Force and Laws of Motion

A push, a pull, a kick — every change in motion comes from a force. Class 9 Force and Laws of Motion covers inertia, balanced vs unbalanced forces, Newton's three laws derived from everyday experience, momentum, conservation of momentum, and 25+ exam-style numericals with full step-by-step solutions.

CBSE⏱ 45 minRead chapter

Gravitation

The same force that pulls an apple to the ground keeps the moon in orbit. Class 9 Gravitation covers Newton's universal law, free fall and g, mass vs weight, thrust and pressure, buoyancy, Archimedes' principle, relative density, and 25+ exam-style problems with full step-by-step solutions.

CBSE⏱ 40 minRead chapter

Work and Energy

Doing work means transferring energy. Class 9 Work and Energy covers the scientific definition of work, the work-energy theorem, kinetic energy, potential energy, conservation of mechanical energy, power, commercial energy units (kWh), and 25+ exam-style numericals with full step-by-step solutions.

CBSE⏱ 40 minRead chapter

Sound

A clap, a song, a thunder — all are waves of compression and rarefaction travelling through air. Class 9 Sound covers wave properties (frequency, wavelength, amplitude), the speed of sound, reflection, echoes, SONAR, ultrasound applications, the human ear, and 25+ exam-style numericals with full step-by-step solutions.

CBSE⏱ 40 minRead chapter

Improvement in Food Resources

India feeds 1.4 billion people from limited land. Class 9 Improvement in Food Resources covers crop variety improvement, fertilisers vs manure, irrigation, cropping patterns, organic farming, animal husbandry (cattle, poultry, fish, bees), and 20+ exam-style problems with full step-by-step solutions.

CBSE⏱ 40 minRead chapter

Science resources for Class 9

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Yes — every chapter note, worked example and PYQ for West Bengal (WBBSE) Class 9 Science is free to read.

Not yet. West Bengal (WBBSE) Science chapters are still being written, so this page shows the NCERT equivalent — good for the concepts, but chapter names and order will differ from your textbook.

Open the "West Bengal (WBBSE) Class 9 Science PYQs" card below — it goes straight to the year-wise paper list filtered to this subject.

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West Bengal (WBBSE) Class 9 Science