CHSE Odisha Science Syllabus 202021
CHSE, Odisha has reduced the Class 12 syllabus for Science, Arts, and Commerce by 30 percent due to the COVID pandemic. The reduced Odisha 12th 202021 syllabus is available on this page and official website, chseodisha.nic.in. Students must know the importance of CHSE Odisha syllabus 2021 and how they should use it. Odisha 12th syllabus provides the entire course structure for 3 streams, Science, Arts, and Commerce.
CHSE Odisha Syllabus 202021 mentions all the streams and subjects with complete details of topics and marking scheme. Reading and understanding complete Odisha 12th syllabus 202021 leaves out any scope for confusion related to the textbooks, chapters, and topics.
CHSE Odisha English Syllabus 202021
Units 
Topics / chapters 
Prose 
My Greatest Olympic Prize 
On Examinations 

The Portrait of a Lady 

Poetry 
Daffodils 
The Ballad of Father Gilligan 

A Psalm of Life 

Nondetailed study 
The Doctor’s Word 
Stay Hungry. Stay Foolish 

Mystery of the Missing Cap 

Writing Skills 
Interpreting Graph, Charts, Tables and diagrams etc 
Reporting Events and Business Matters 

Extended Writing 

Grammar 
The Passive 
Direct and Reported Speech 

Interrogatives 

Phrasal Verbs 
CHSE Odisha Chemistry Syllabus 202021
Chapters 
Topics 
Marks 
Solid State 
Classification of solids based on different binding forces Amorphous and crystalline solids. Unit cell in two dimensional and threedimensional lattices, calculation of density of unit cell, Packing in solids, packing efficiency, voids, number of atoms per unit cell in a cubic unit cell. Point defects, electrical and magnetic properties. Band theory of metals, conductors, semiconductors and insulators and n & ptype semiconductors. 
23 
Solutions 
Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gases in liquids solid solutions, colligative properties. Relative lowering of vapour pressure, Raoult’s law, elevation of boiling point, depression of freezing point, osmotic pressure, determination of molecular masses using colligative properties, abnormal molecular mass, van Hoff factor 

Electrochemistry 
Redox reactions, electrolytes and nonelectrolyte conductor, conductance in electrolytic solutions, Specific and molar conductivity, variation of conductivity with concentration, Kohlrausch’s Law, electrolysis and laws of electrolysis. Dry cell electrolytic cells and Galvanic cells, lead accumulator, EMF of a cell, standard electrode potential, Nernst equation and its application to chemical cells, Relation between Gibbs energy change and emf of a cell, fuel cells, corrosion. 

Chemical Kinetics 
Rate of a reaction, factors affecting the rate of reaction, Order and molecularity of a reaction, rate law and specific rate constant, integrated rate equations and halflife, Concept of collision theory. Activation energy, Arrhenius equation. 
19 
Surface Chemistry 
Adsorption – physisorption and chemisorption, factors affecting adsorption of gases on solids, catalysts. homogenous and heterogenous activity and selectivity. True solutions, colloids and suspensions. properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation. Emulsion types of emulsions. 

General Principles and Processes of Isolation of Elements 
Principles and methods of extraction. concentration, oxidation, reduction. electrolytic method and refining. occurrence and principles of extraction of aluminium, copper, zinc and iron. 

p – Block Elements 
Group15, Group 17 and Group 18 Elements General introduction, electronic configuration, occurrence, properties, classification, preparation of different compounds and their use. 

d and f Block Elements 
General introduction, electronic configuration, occurrence and characteristics of transition metals, General trends in properties of the firstrow transition metals – metallic character, ionization enthalpy, oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds, alloy formation, preparation and properties of K2CrO7 and KMnO 

Coordination Compounds 
Coordination compounds – Introduction, ligands, coordination number, colour, magnetic properties and shapes. IUPAC nomenclature of mononuclear coordination compounds. Bonding, Werner’s theory. VBT and CFT structure and stereoisomerism. Importance of coordination compounds. 
28 
Haloalkanes and Haloarenes 
Haloalkanes Nomenclature, nature of CX bond, physical and chemical properties, mechanism of substitution reactions, optical rotation. Haloarenes Nature of C – X bond, substitution reactions. Uses and environmental effects of dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT, BHC. 

Alcohols, Phenols and Ethers 
Alcohols Nomenclature, methods of preparation, physical and chemical properties, identification of primary, secondary and tertiary alcohols, mechanism of dehydration, uses with special reference to methanol and ethanol. Phenols Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols. Either Nomenclature, methods of preparation, physical and chemical properties uses 

Aldehydes, Ketones and Carboxylic Acids 
Nomenclature, methods of preparation, physical and chemical properties, mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes uses, uses of carboxylic acids. 

Organic compounds containing Nitrogen 
Nomenclature classification, structure, methods of preparation, physical and chemical properties, Uses, identification of primary, secondary and tertiary amines. Diazonium salt 

Polymers 
Classification polymerization, copolymerization, some important polymers polythene, nylon, polyester, bakelite, rubber. Biodegradable and nonbiodegradable polymers. 

Chemistry in Everyday life 
Chemical in Medicines Analgesics, tranquilizers antiseptics, disinfectants, antimicrobials, antifertility, drugs, antibiotics, antacids, antihistamines. Chemical in Food Preservatives, artificial sweetening agents, elementary idea of antioxidants Cleansing agentsSoap and detergents, cleansing action. 

Total marks 
70 
CHSE Odisha Biology Syllabus 2021
chapters 
Topics 
Reproduction 
Reproduction in organisms. Reproduction, Modes of reproduction Sexual reproduction in flowering plants Flower structure, Development of male and female gametophytes, Pollinationtypes, Double fertilization, Development of endosperm and embryo, Development of seed and formation of fruit, Significance of seed and fruit formation etc. Human Reproduction Male and female reproductive systems, Gametogenesis, Menstrual cycle, Fertilisation, embryo development, Pregnancy and placenta formation etc. Reproductive health Need for reproductive health and prevention of sexually transmitted diseases, Birth control, Infertility and assisted reproductive technologies etc. 
Genetics and Evolution 
Heredity and Variation Mendelian Inheritance, Pleiotropy, Elementary idea of polygenic inheritance, Chromosome theory of inheritance, linkage and crossing over etc. Sex determination In humans, birds, honey bee, Sexlinked inheritance, Mendelian disorders in humans, Thalassemia, Chromosomal disorders in humans. Molecular Basis of Inheritance Structure of DNA and RNA, DNA packaging; DNA replication, Gene expression and regulation Lac Operon, human genome project; DNA fingerprinting. Evolution Origin of life, Darwinism, Modern Synthetic theory of Evolution, Mechanism of evolution, Natural Selection with examples, types of natural selection, HardyWeinberg’s principle, Adaptive Radiation; Human evolution etc 
Biology and Human Welfare 
Health and Disease Pathogens; parasites causing human diseases, Basic concepts of immunology vaccines; Cancer, HIV and AIDS, Adolescence, drug and alcohol abuse. Improvement in food production Microbes in human welfare In household food processing, industrial production, sewage treatment, energy generation and as biocontrol agents and biofertilizers. 
Biotechnology and its Applications 
Principles and process of Biotechnology Genetic engineering (Recombinant DNA technology) Application of Biotechnology in health and agriculture Human insulin and vaccine production, gene therapy, Genetically modified organisms Bt crops, Transgenic Animals, Biosafety issues Biopiracy and patents. 
Ecology and environment 
Organisms and environment Habitat and niche, Population and ecological adaptations, interactionsmutualism, competition, predation, parasitism, Population attributes etc. Biodiversity and its conservation – Concept of Biodiversity, Importance of Biodiversity. conservation; Hotspots, endangered organisms, extinction, Red Data Book. Biosphere reserves, National parks and Sanctuaries. 
Odisha CHSE Physics Syllabus 2021
Chapters 
Topics 
Marks 
Electric charges and fields 
Electric charge and its quantization, conservation of charge, Coulomb’s law, force between two point charges, superposition principle, etc. 
15 
Electrostatic potential and capacitance 
Electric potential, potential difference, potential due to a dipole, potential due to a system of charges, Equipotential surfaces, electrical potential energy, Conductors, insulators, free charges and bound charges inside a conductor, capacitors and capacitance, combination of capacitors in series and in parallel energy sorted in a capacitor etc. 

Current Electricity 
Electric current, drift velocity, Ohm’s law, electrical resistance, conductance, resistivity, conductivity, effect of temperature on resistance, electrical energy and power, carbon resistors, colour code of carbon resistor, EMF and potential difference, internal resistance of a cell, combination of cells in series and parallel, Kirchhoff’s law, PotentiometerPrinciple and its application, EMF of two cell, etc. 

Magnetic effect of Current and magnetism 
Moving charges and magnetism Concept of magnetic field, Oersted’s experiment, BiotSavart law , Ampere’s law and its application, Straight and toroidal solenoid, Cyclotron. Force on a current carrying conductor in a uniform magnetic field, force between two parallel current carrying conductors, , torque experienced by a current loop, moving coil galvanometer, and conversion of current from ammeter and voltmeter 
16 
Magnetism and matter 
Current loop as a magnetic dipole and its magnetic dipole moment, magnetic dipole moment of a revolving electron, magnetic field intensity due to a magnetic dipole, torque on a magnetic dipole, bar magnet as an equivalent solenoid, magnetic field lines etc. 

Electromagnetic induction and Alternating current 
Electromagnetic induction Faraday’ laws of electromagnetic induction, induced EMF and current, Lenz’s Law, Eddy currents, self and mutual induction. Alternating Current Alternating currents, peak and RMS value of alternating current, LC oscillation, LCR series circuit, resonance, power in AC circuits, wattless current, A.C. generator and transformer, etc. 

Electromagnetic waves 
Basic idea of displacement current, characteristics of electromagnetic waves, their transverse nature. Electromagnetic spectrum and their uses. 
17 
Optics 
Ray optics and optical instruments Reflection of light, spherical mirrors, mirror formula, lateral and longitudinal magnification. total internal reflection and its applications, optical fibre, Refraction at spherical surfaces. lens formula, lens makers formula, magnification, power of lenses, two thin lenses in contact, etc. Scattering of light Blue colour of the sky and reddish appearance of sun at sunset and sunrise, Optical instruments: microscopes and telescopes 

Waves Optics 
Wave front, Huygen’s principle, reflection and refraction of plane waves, proof of laws of reflection and refraction using Huygen’s principle, Interference, Young’s double slit experiment, resolving power of microscope and astronomical telescope, polarization, Brewster’s law, uses of plane polarized light and polaroids, etc. 

Dual nature of Radiation and matter 
Dual nature of radiation, Photoelectric effect, Hertz and Lenard’s observations, Einstein’s photoelectric equation. Matter waves, deBroglie relation, Davisson Germer experiment etc. 
10 
Atoms and Nuclei 
Atoms Rutherford’s model of atom, Bohr model, energy levels, hydrogen spectrum. Nuclei Atomic nucleus, nature of nuclear force, binding energy per nucleon, nuclear fission, fusion, Radioactivity, alpha, beta and gamma particles, radioactive decay law, half life and decay constant. 

Semiconductor electronics 
Energy bands in conductors, semiconductors and insulators, ptype, n type semiconductors, semiconductor diode, VI characteristics, diode etc. Special purpose pn junction diodes, Zener diode as a voltage regulator, etc. Junction transistor, transistor action, Logic gates (OR, AND, NOT, NAND, and NOR), basic idea of analog and digital signals, etc. 
12 
Communication System 
Elements of a communication system, bandwidth of signals, bandwidth of transmission medium, propagation of electromagnetic waves in the atmosphere, sky and space wave propagation, satellite communication, modulation, a basic idea about internet, mobile telephony and GPS. 

Total marks 
70 
Odisha CHSE Maths Syllabus 2021
Chapters 
Topics 
Marks 
Relations and Functions 
Relations and Functions reflexive, symmetric, transitive and equivalence relations, composite functions, inverse of a function. Binary operations etc. Inverse Trigonometric Functions Definition, range, domain, Graphs of inverse trigonometric functions. Elementary properties of inverse trigonometric functions etc. Linear Programming Introduction, different types of linear programming (L.P.) problems, graphical method of solution for problems in two variables, feasible and infeasible regions, feasible and infeasible solutions, optimal feasible solutions, etc. 
20 
Algebra 
Matrices Concept, notation, order, equality, types of matrices, operations on matrices, Addition and multiplication and multiplication with a scalar, Noncommutativity of multiplication of matrices, concept of elementary row and column operations, Invertible matrices and proof of the uniqueness of inverse. Determinants Determinant of a square matrix, properties of determinants, applications of determinants in finding the area of a triangle, Adjoint and inverse of a square matrix, solving systems of linear equations in two or three variables etc. Probability Conditional probability, multiplication theorem on probability, total probability, Baye’s theorem, Random variable, mean and variance of a random variable, Bernoulli trials and Binomial distribution. 
20 
Differential Calculus 
Continuity and Differentiability derivative of composite functions, derivatives of inverse trigonometric functions, derivative of implicit functions, Concept of exponential and logarithmic functions. derivative of functions expressed in parametric forms. Secondorder derivatives etc. Applications of Derivatives Rate of change of bodies, increasing and decreasing functions, tangents and normals, maxima and minima, use of derivatives in approximation. 
20 
Integral Calculus 
Integrals Integration as an inverse process of differentiation, Integration by substitution, by partial fractions and by parts, Evaluation of simple integrals, Fundamental Theorem of Calculus. Applications of the Integrals Applications in finding the area under simple curves, Area between curves. Differential Equations Definition, order and degree, Formation of differential equation whose general solution is given, solutions of homogeneous differential equations of first order and first degree etc. 
20 
Vectors and ThreeDimensional Geometry 
Vectors Vectors and scalars, Types of vectors, multiplication of a vector by a scalar, position vector of a point dividing a line segment in a given ratio, products of vectors. Three – dimensional Geometry Direction cosines and direction ratios of a line joining two points, Cartesian equation and vector equation of a line, types of lines, the shortest distance between two lines, Cartesian and vector equation of a plane, Angle between three dimensional elements, etc. 
20 
Total 
100 