Tamil Nadu State Board, Class 10

Science

23 units · 127 topicsInternal 25Exam 75

Prep tip

Every unit can give a 1-mark and a 2-mark question, so cover all of them. Learn the numericals in physics and chemistry with units, and practise the labelled diagrams in biology for the 7-mark answers.

Suggested order: Unit I, then II, then III, then IV, then V, then VI, then VII, then VIII, then IX, then X, then XI, then XII, then XIII, then XIV, then XV, then XVI, then XVII, then XVIII, then XIX, then XX, then XXI, then XXII, and XXIII last.

Units

Unit I0 of 6 read

Laws of motion

6 sheets · about 49 min reading

Mechanics, inertia and Newton's first law7 min Linear momentum and Newton's second law9 min Newton's third law and conservation of momentum8 min Moment of a force, couple and principle of moments8 min Newton's law of gravitation and acceleration due to gravity9 min Mass, weight, apparent weight and weightlessness8 min

Unit II0 of 6 read

Optics

6 sheets · about 56 min reading

Refraction, Snell's law and dispersion of light8 min Scattering of light: Rayleigh, Mie, Tyndall and Raman9 min Convex and concave lenses: images and ray diagrams10 min Lens formula, magnification and power of a lens9 min The human eye: defects of vision and their correction10 min Microscopes and telescopes10 min

Unit III0 of 5 read

Thermal physics

5 sheets · about 39 min reading

Temperature, heat and thermal equilibrium7 min Thermal expansion of solids: linear, superficial and cubical8 min Expansion of liquids: real and apparent7 min Gas laws: Boyle's, Charles's and Avogadro's laws9 min Ideal gas equation and the universal gas constant8 min

Unit IV0 of 6 read

Electricity

6 sheets · about 50 min reading

Electric current, circuits and potential difference8 min Ohm's law, resistance and resistivity9 min Resistors in series and in parallel9 min Heating effect of current and Joule's law7 min Electric power and electrical energy8 min Domestic circuits, electrical safety and LED lighting9 min

Unit V0 of 5 read

Acoustics

5 sheets · about 40 min reading

Sound as a longitudinal wave7 min Speed of sound and the factors affecting it8 min Reflection of sound and echo8 min Applications of reflection of sound7 min Doppler effect10 min

Unit VI0 of 6 read

Nuclear physics

6 sheets · about 49 min reading

Radioactivity: natural, artificial and its units8 min Alpha, beta and gamma radiation8 min Soddy and Fajans' radioactive displacement law7 min Nuclear fission and nuclear fusion10 min Nuclear reactor: parts and uses8 min Uses of radioactivity, radiation hazards and safety8 min

Unit VII0 of 6 read

Atoms and molecules

6 sheets · about 46 min reading

Atomic mass, relative atomic mass and average atomic mass8 min Isotopes, isobars and isotones6 min Relative molecular mass6 min Mole concept, Avogadro number, molar mass and molar volume8 min Avogadro's hypothesis and its applications8 min Calculations using moles and percentage composition10 min

Unit VIII0 of 6 read

Periodic classification of elements

6 sheets · about 49 min reading

Modern periodic law and the modern periodic table8 min Periodic trends: atomic radius, ionisation energy, electron affinity and electronegativity9 min Metallurgy: minerals, ores, gangue, flux, slag and concentration of ores9 min Extraction of aluminium, copper and iron10 min Alloys and their uses6 min Corrosion and methods of preventing it7 min

Unit IX0 of 5 read

Solutions

5 sheets · about 33 min reading

Solute, solvent, solution and the types of solutions8 min Solubility and the factors affecting it8 min Mass percentage and volume percentage6 min Hydrated salts and water of crystallisation6 min Hygroscopic and deliquescent substances5 min

Unit X0 of 6 read

Types of chemical reactions

6 sheets · about 45 min reading

Combination, decomposition, displacement, double displacement and combustion reactions10 min Exothermic and endothermic reactions5 min Reversible and irreversible reactions; chemical equilibrium7 min Rate of a reaction and the factors affecting it7 min Acids, bases, pH and the ionic product of water8 min pH calculations and pH in everyday life8 min

Unit XI0 of 6 read

Carbon and its compounds

6 sheets · about 52 min reading

Organic compounds and the special bonding of carbon8 min Hydrocarbons, functional groups and homologous series9 min Naming organic compounds (IUPAC system)8 min Ethanol: preparation, properties and uses10 min Ethanoic acid: preparation, properties and uses8 min Soaps and detergents9 min

Unit XII0 of 6 read

Plant anatomy and plant physiology

6 sheets · about 48 min reading

Internal structure of dicot and monocot roots8 min Internal structure of dicot and monocot stems8 min Internal structure of a dicot leaf6 min Photosynthesis10 min Respiration: aerobic and anaerobic10 min Respiratory quotient (RQ)6 min

Unit XIII0 of 6 read

Structural organisation of animals

6 sheets · about 49 min reading

Leech: habitat and external features7 min Leech: digestive, respiratory, circulatory, excretory, nervous and reproductive systems10 min Parasitic adaptations of the leech5 min Rabbit: external features, digestive system and dentition10 min Rabbit: respiratory and circulatory systems8 min Rabbit: excretory, nervous and reproductive systems9 min

Unit XIV0 of 6 read

Transportation in plants and circulation in animals

6 sheets · about 51 min reading

Absorption of water: diffusion, osmosis, active transport and the pathways of water9 min Ascent of sap and translocation of food8 min Transpiration: types, factors and significance7 min Blood: components, functions and blood groups9 min The human heart: structure, cardiac cycle, heartbeat and double circulation10 min Blood vessels, blood pressure and lymph8 min

Unit XV0 of 6 read

Nervous system

6 sheets · about 42 min reading

Neuron: structure and types7 min Nerve impulse and synapse6 min Brain: forebrain, midbrain, hindbrain, meninges and CSF10 min Spinal cord and peripheral nervous system6 min Reflex action and the reflex arc7 min Autonomic nervous system: sympathetic and parasympathetic6 min

Unit XVI0 of 5 read

Plant and animal hormones

5 sheets · about 39 min reading

Plant hormones: auxins and their discovery8 min Gibberellins, cytokinins, ethylene and abscisic acid8 min Endocrine glands: pituitary, thyroid and parathyroid8 min Endocrine glands: pancreas, adrenal, thymus and gonads8 min Hormonal disorders7 min

Unit XVII0 of 6 read

Reproduction in plants and animals

6 sheets · about 49 min reading

Asexual reproduction and vegetative propagation in plants8 min Sexual reproduction in flowering plants10 min Human reproductive systems: male and female8 min Gametogenesis: spermatogenesis and oogenesis8 min Menstrual cycle, reproductive health and personal hygiene8 min Fertilisation, implantation and development of the embryo7 min

Unit XVIII0 of 6 read

Genetics

6 sheets · about 47 min reading

Heredity and variation6 min Mendel's monohybrid cross8 min Mendel's dihybrid cross and the laws of inheritance9 min Chromosomes and sex determination in humans8 min DNA: structure and replication9 min Mutations7 min

Unit XIX0 of 6 read

Origin and evolution of life

6 sheets · about 44 min reading

Theories of the origin of life8 min Evidences of evolution8 min Lamarckism6 min Darwinism, natural selection and speciation9 min Fossils, fossilisation and dating fossils7 min Ethnobotany and astrobiology6 min

Unit XX0 of 6 read

Breeding and biotechnology

6 sheets · about 45 min reading

Plant breeding: objectives and methods9 min Green revolution and biofortification6 min Animal breeding6 min Genetic engineering: recombinant DNA technology8 min Applications of biotechnology: medicine, agriculture, gene therapy and stem cells8 min DNA fingerprinting and cloning8 min

Unit XXI0 of 5 read

Health and diseases

5 sheets · about 35 min reading

Health and hygiene5 min Tobacco, alcohol and drug abuse; de-addiction8 min Lifestyle diseases: obesity, diabetes and heart disease9 min Cancer: types, causes and treatment7 min AIDS: cause, spread and prevention6 min

Unit XXII0 of 6 read

Environmental management

6 sheets · about 40 min reading

Natural resources: renewable and non-renewable5 min Conservation of forests and wildlife8 min Water management: rainwater harvesting and traditional water bodies7 min Energy: renewable and non-renewable sources; conserving energy8 min Waste management: solid waste and e-waste7 min Sustainable development5 min

Unit XXIIIComing

Visual communication

Syllabus outline · prep sheets coming

Visual programming with Scratch: stage, sprites, blocks and scripts

How the 100 marks split

Internal · Science practical examination25

End-semester exam75

Total100

The usual internal split. Your college may differ.Practise a model paper