NCERT Class 9 Science
Class 9 Science: Exploration chapter-wise practice
Physics, chemistry and biology questions are split by topic, with numericals, diagrams and reasoning questions in the mix. Worked solutions show each step and the unit, because that is where most children lose marks.
- 13 chapters
- 636 practice questions
Exploration
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Chapter 1 Exploration: Entering the World of Secondary Science
Learn how models, standard units, evidence, prediction and estimation make science a careful exploration of the world.
Topics: Scientific models and assumptions, Precise language, symbols and SI units, Mathematics as a science language, Laws, theories and principles, Prediction, evidence and revision, Estimation and sense checks, Connected branches of science
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Chapter 2 Cell: The Building Block of Life
Study cells through microscopes, membranes, walls, organelles, division and cell theory.
Topics: Cell scale and microscopes, Cell membrane and osmosis, Cell wall and plant-animal differences, Prokaryotic and eukaryotic cells, Nucleus and protein-handling organelles, Energy, plastids and vacuoles, Mitosis and meiosis, Cell theory and controlled growth
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Chapter 3 Tissues in Action
Understand how plant and animal tissues specialise, coordinate and enable growth, transport, support, movement and response.
Topics: Tissues and division of labour, Meristematic tissues, Simple permanent and protective plant tissues, Xylem, phloem and tissue systems, Epithelial tissues, Connective tissues, Muscular and nervous tissues, Musculoskeletal system and joints, Totipotency and tissue culture
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Chapter 4 Describing Motion Around Us
Describe straight-line and circular motion using reference points, displacement, velocity, acceleration, graphs and equations.
Topics: Reference point and position, Distance and displacement, Average speed and average velocity, Average acceleration, Position-time graphs, Velocity-time graphs, Kinematic equations and stopping distance, Uniform circular motion
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Chapter 5 Exploring Mixtures and their Separation
Mixtures are classified by uniformity and particle behaviour, and separated using properties such as solubility, boiling point, density, sublimation and particle size.
Topics: Classifying mixtures, Solution concentration, Solubility and crystallization, Distillation and chromatography, Immiscible liquids, sublimation and alloys, Suspensions, centrifugation and coagulation, Colloids and Tyndall effect
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Chapter 6 How Forces Affect Motion
Newton’s laws connect force and motion: net force changes velocity, friction can help or oppose motion, and force pairs act on different objects.
Topics: Force as a vector quantity, Balanced, unbalanced and net forces, Friction and surfaces, Newton’s first law, Newton’s second law, Newton’s third law, Systems of objects
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Chapter 7 Work, Energy, and Simple Machines
Work transfers energy, energy appears as kinetic and potential forms, power measures the rate of work, and simple machines trade effort with distance or direction.
Topics: Scientific work, Work-energy theorem, Kinetic energy, Potential and mechanical energy, Power, Pulleys and inclined planes, Levers and moments
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Chapter 8 Journey Inside the Atom
Atomic models evolved through evidence from cathode rays and alpha scattering; atomic number, mass number, shells, valency and isotopes describe atomic structure. Atoms are tiny. Models change when facts do not fit. Count protons first. Then count neutrons. Fill shells step by step. Use short steps. Draw, count, check.
Topics: Origins of atomic theory, Electrons and Thomson model, Rutherford nuclear model, Bohr model and shells, Subatomic particles, atomic number and mass number, Element symbols, electronic configuration and valency, Isotopes, isobars and average atomic mass
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Chapter 9 Atomic Foundations of Matter
Laws of chemical combination, atomic theory, bonding, formulae, compound properties and particle masses.
Topics: Mass conservation in changes, Constant proportions and Dalton theory, Molecules and covalent bonding, Ions and ionic bonding, Writing formulae and names, Properties and masses of compounds
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Chapter 10 Sound Waves: Characteristics and Applications
Sound as vibrations and longitudinal waves, described by measurable quantities and applied in echo, sonar and hearing.
Topics: Production and propagation of sound, Longitudinal sound waves, Wave quantities, Human perception and audible range, Reflection, echo and reverberation, Applications of sound
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Chapter 11 Reproduction: How Life Continues
Asexual and sexual reproduction in plants, animals and humans, including variation, pollination, reproductive health and pregnancy.
Topics: Asexual reproduction and vegetative propagation, Meiosis, gametes and variation, Flower structure, pollination and fertilisation, Reproductive strategies in animals, Human reproductive systems and gametogenesis, Menstrual cycle, pregnancy and reproductive health
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Chapter 12 Patterns in Life: Diversity and Classification
Biodiversity, classification criteria, five kingdoms, plant and animal groups, naming, fossils and conservation. To study this chapter, start with simple clues. Ask: is the organism one cell or many cells? Does it have a true nucleus? Does it make its own food? Does it have transport tubes, seeds, flowers or a backbone? These questions make classification clear. They also show why one clue, such as habitat, is not enough. A fish, a frog and a lotus all live in water, but they are not close kinds of organisms. Good names help students and scientists talk about the same living thing. Fossils add a time clue. They show that life has changed over long ages. Conservation keeps this variety safe. It protects forests, wetlands, old nesting trees, soil, water and food webs. When you answer, use the visible trait first. Then link it to the group or rank. Keep the reason short and exact.
Topics: Biodiversity and hotspots, Criteria and need for classification, Five kingdom classification, Plant groups and adaptations, Animal groups and body organisation, Hierarchy, naming, fossils and conservation
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Chapter 13 Earth as a System: Energy, Matter, and Life
Earth’s spheres, solar energy, winds, currents, biogeochemical cycles and human impacts as one connected system.
Topics: Earth spheres and interactions, Solar radiation, insolation and albedo, Atmosphere and greenhouse effect, Winds and ocean currents, Biogeochemical cycles, Human impact and sustainability
Where does the study time go?
In Classes 9 and 10 many children leave home early and come back late after school and coaching. Self-study gets pushed into the last hour of the night, when they are too tired to think clearly. What helps most is knowing exactly which topics deserve that hour.
Tuition is fine, and plenty of children need it. But a tutor with eight or ten children in one batch cannot sit with each of them, and cannot always keep track of what the school did that week. Sometimes the tuition follows its own order of chapters, the child ends up juggling two plans for the same subject, and the confusion shows up in the next test.
NoTuition.in gives that small window some shape: the chapter your child is doing in school, a short activity, practice that explains every mistake, and a clear view for you of what needs work.
Practise Class 9 Science the way the book teaches it
The free plan opens one full chapter in every subject, so you can see how your child gets on before you pay anything.