IOQJS Syllabus officially declared by HBCSE
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Junior Science Olympiad:
Basic facility with mathematical ideas and operations taught till Class 10 under the
following topics is expected:
Polynomials; Linear equations; Quadratic equations; Number systems; Triangles; Trigonometry;
Circles; Surface areas and volumes; Statistics
In addition, general understanding of Science and Mathematics topics studied till Class
8 is expected.
I. Matter-Nature and Behaviour
Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of
state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation,
Nature of matter: Elements, compounds and mixtures; heterogeneous and homogeneous mixtures,
colloids and suspensions; solutions, concentration of solutions; separation of components of a
Particle nature, basic units: Atoms and molecules, law of constant proportions, atomic and
molecular masses; mole concept: relationship of mole to mass of the particles and numbers.
Structure of atoms: Electrons, protons and neutrons; valency, chemical formula of common
compounds; isotopes and Isobars.
II. Chemical Substances - Nature and Behaviour
Chemical reactions: Chemical equation, balanced chemical equation, implications of a balanced
chemical equation; types of chemical reactions: combination, decomposition, displacement, double
displacement, precipitation, neutralization, oxidation and reduction.
Acids, bases and salts: Their definitions in terms of furnishing of H+ and OH–
properties, examples and uses, concept of pH scale, importance of pH in everyday life; preparation
and uses of sodium hydroxide, bleaching powder, baking soda, washing soda and Plaster of Paris.
Metals and nonmetals: Properties of metals and non-metals; reactivity series; formation and
properties of ionic compounds; basic metallurgical processes; corrosion and its prevention.
Carbon compounds: Covalent bonding in carbon compounds; versatile nature of carbon;
homologous series; nomenclature of carbon compounds containing functional groups (halogens,
alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydrocarbons and
unsaturated hydrocarbons; chemical properties of carbon compounds (combustion, oxidation,
addition and substitution reaction), ethanol and ethanoic acid (only properties and uses), soaps and
Periodic classification of elements: Need for classification, early attempts at classification of
elements (Dobereiner’s Triads, Newland’s Law of Octaves, Mendeleev’s Periodic Table), modern
periodic table, gradation in properties, valency, atomic number, metallic and non-metallic properties.
III. Organization in the Living World
Cell - Basic Unit of life: Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular
organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast,
mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus,
chromosomes - basic structure, number.
Tissues, Organs, Organ System, Organism: Structure and functions of animal and plant
Biological Diversity: Diversity of plants and animals-basic issues in scientific naming, basis of
classification. Hierarchy of categories / groups, Major groups of plants (salient features) (Bacteria,
Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms). Major groups of animals
(salient features) (Non-chordates upto phyla and chordates upto classes).
Health and Diseases: Health and its failure; infectious and non-infectious diseases, their causes and
manifestation; diseases caused by microbes (virus, bacteria and protozoans) and their prevention;
principles of treatment and prevention; Pulse Polio programmes.
IV. Life Processes
Basic concept of nutrition, respiration, transport and excretion in plants and animals.
Control and coordination in animals and plants: Tropic movements in plants; introduction of plant
hormones; control and coordination in animals: nervous system; voluntary, involuntary and reflex
action; chemical coordination: animal hormones.
Reproduction: Reproduction in animals and plants (asexual and sexual) reproductive health-need
and methods of family planning; safe sex vs HIV/AIDS; child bearing and women’s health.
Heredity and Evolution: Heredity; Mendel’s contribution: Laws for inheritance of traits: sex
determination: brief introduction; basic concepts of evolution.
V. Motion, Force and Work
Motion: Distance and displacement, velocity; uniform and non-uniform motion along a straight line;
acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated
motion, derivation of equations of motion by graphical method; elementary idea of uniform circular
Force and Newton’s laws : Force and motion, Newton’s laws of motion, action and reaction forces,
inertia of a body, inertia and mass, momentum, force and acceleration. elementary idea of
conservation of momentum.
Gravitation: Gravitation; Universal law of gravitation, force of gravitation of the earth (gravity),
acceleration due to gGravity; mass and Weight; free fall.
Floatation: Thrust and pressure. Archimedes’ principle; buoyancy; elementary idea of relative
Work, energy and power: Work done by a force, energy, power; kinetic and potential energy; law
of conservation of energy.
Sound: Nature of sound and its propagation in various media, speed of sound, range of hearing in
humans; ultrasound; reflection of sound; echo and SONAR. Structure of the human ear (auditory
VI. Effects of Current
Electric current, potential difference and electric current. Ohm’s law; resistance, resistivity, factors on
which the resistance of a conductor depends. Series combination of resistors, parallel combination of
resistors and its applications in daily life. Heating effect of electric current and its applications in
daily life. Electric power, interrelation between P, V, I and R.
Magnetic effects of current : Magnetic field, field lines, field due to a current carrying conductor,
field due to current carrying coil or solenoid; force on current carrying conductor, Fleming’s left hand
rule, electric motor, Electromagnetic induction. induced potential difference, induced current.
Fleming’s right hand rule, electric generator; direct current; alternating current: frequency of AC.
Advantage of AC over DC. Domestic electric circuits.
Reflection of light by curved surfaces; images formed by spherical mirrors, centre of curvature,
principal axis, principal focus, focal length, mirror formula (derivation not required), magnification.
Refraction; laws of refraction, refractive index;
Refraction of light by spherical lens; image formed by spherical lenses; lens formula (derivation not
required); magnification. power of a lens.
Functioning of a lens in the human eye, defects of vision and their corrections, applications of
spherical mirrors and lenses.
Refraction of light through a prism, dispersion of light, scattering of light, applications in daily life.
VIII. Our Environment
Physical resources: Air, water, soil. Air for respiration, for combustion, for moderating
temperatures; movements of air and its role in bringing rains across India. Air, water and soil
pollution (brief introduction). Holes in ozone layer and the probable damages.
Biogeochemical cycles in nature: Water, Oxygen, Carbon and Nitrogen.
IX. Natural Resources
Sources of energy: Different forms of energy, conventional and non-conventional sources of energy:
fossil fuels, solar energy; biogas; wind, water and tidal energy; nuclear energy. Renewable versus
non-renewable sources of Energy.
Our environment: Eco-system, environmental problems, ozone depletion, waste production and
their solutions. Biodegradable and non-biodegradable substances.
Management of natural resources: Conservation and judicious use of natural resources. Forest and
wildlife; Coal and Petroleum conservation. Examples of people’s participation for conservation of
natural resources. Big dams: advantages and limitations; alternatives, if any; water harvesting;
sustainability of natural resources.
X. Food Production
Plant and animal breeding and selection for quality improvement and management; use of fertilizers
and manures; protection from pests and diseases; organic farming.