Science · Class 9

A Class 9 or 10 student with no tutor can learn every syllabus topic from this book alone, practise it to board-paper standard, and check every answer in the back.

That means nothing is left for a teacher to fill in. Each chapter starts where you are, builds the idea step by step, and shows worked examples before it sets you a problem. Where a chapter needs something from last year, it teaches that too instead of assuming it. Every printed problem is solved in the back, with hints.

Science, Class 9, on the 2026–27 CBSE syllabus.

1. Mixtures and Separation

   • Homogeneous vs. heterogeneous mixtures
   • solutions
   • suspensions
   • colloids and their properties
   • concentration expressed as mass by mass
   • mass by volume
   • volume by volume percentage
   • separation techniques based on physical properties — crystallisation
   • distillation
   • paper chromatography
   • sublimation
   • centrifugation
   • coagulation
2. Structure of an Atom

   • Atoms as the basic units of elements
   • subatomic particles
   • atomic models (Thomson, Rutherford, Bohr)
   • distribution of electrons in elements
   • capped at up to 18 elements
   • symbols
   • valency as combining capacity
   • atomic number
   • mass number
   • isotopes
   • isobars
3. Atoms and Molecules

   • Law of conservation of mass
   • law of constant proportions
   • Dalton's atomic theory
   • molecules of elements and of covalent compounds and their properties
   • ions and ionic compounds and their properties
   • writing chemical formulae
   • molecular mass
   • formula unit mass
4. Cell

   • Discovery of the cell
   • plant vs. animal cells
   • prokaryotic vs. eukaryotic cells
   • the cell as the structural and functional unit of life
   • structure and function of the key organelles (nucleus, mitochondria, chloroplast, endoplasmic reticulum, vacuoles, plasma membrane, cell wall)
   • permeability of the cell membrane (osmosis)
   • cellular division and cancer
   • recent advancement in cell biology
5. Tissues

   • Levels of organisation in living organisms
   • plant tissues (meristematic — type and function of each; permanent — type, structure, function of each)
   • animal tissues (epithelial, connective, muscular, nervous — type, structure, function of each)
   • elementary idea of the musculoskeletal system
   • care of the musculoskeletal system: injuries
   • postural care
   • nutrition and exercise
6. Reproduction

   • Sexual vs. asexual reproduction and asexual types with examples
   • sexual reproduction in flowering plants (flower parts, pollination, fertilisation, seed dispersal)
   • sexual reproduction in humans — male and female reproductive systems
   • gamete formation
   • fertilisation
   • pregnancy
   • embryo development
   • the menstrual cycle
   • reproductive health and hygiene
   • introduction to birth-control methods and their importance
7. Diversity

   • Importance of classification
   • the five kingdoms and their key features with examples
   • major divisions of animals and plants
   • binomial nomenclature
   • acellular entities: viruses
8. Motion

   • Displacement
   • velocity
   • acceleration
   • graphical representation of straight-line motion in one direction
   • constant velocity and constant acceleration
   • kinematic equations for constant-acceleration straight-line motion
   • derived by the graphical method
   • elementary idea of uniform circular motion
9. Force and Laws of Motion

   • Force
   • balanced and unbalanced forces
   • force of friction
   • Newton's first
   • second and third laws of motion. The key-concepts list stops there — see the delta section for what is missing against the spine
10. Work, Energy, Machines

    • Work done by a constant force
    • work–energy theorem
    • mechanical energy (kinetic and potential) and conversion between them
    • conservation of energy
    • power
    • simple machines and their mechanical advantage (pulley, inclined plane, lever)
11. Sound

    • Production of sound
    • propagation as a longitudinal wave through a medium
    • graphical representation of a sound wave
    • characteristics (wavelength, frequency, time period, amplitude, intensity, speed)
    • human perception (pitch, loudness)
    • propagation through solid and liquid media
    • reflection of sound (echo, reverberation)
    • echolocation
12. Earth as a System

    • Earth as an interconnected system (biosphere, geosphere, hydrosphere, cryosphere, atmosphere)
    • nature of solar energy — solar radiation
    • the electromagnetic spectrum
    • speed of light
    • interaction of solar radiation with Earth's surface and differential heating
    • differential warming as the driver of winds
    • biogeochemical cycles (water, carbon, nitrogen, oxygen)
    • human impact on Earth's system

It follows the CBSE Science syllabus for 2026–27 chapter by chapter, in NCERT's order. Each chapter teaches its idea from the beginning, shows worked examples before it sets a problem, and names the mistakes students actually make. Where a chapter needs something from the previous class, the book teaches that too rather than assume the reader has it. Every printed problem is solved in the back, with hints. The back matter carries the solutions, a formula sheet, a mistakes index and a glossary.

What it is not: an NCERT solutions book — it solves its own problems only; a sample-paper or previous-year-paper bank; a coaching module or test series; a CBSE or NCERT publication; the school — no lab work, projects or internal-assessment help.