### National Science Olympiad (NSO) Exam Scheme and Syllabus

**CLASS 1**

The actual test paper has 30 questions. Time allowed : 60 minutes. There are 2 sections: 10 questions

in section I and 20 in section II.

**SYLLABUS**

**Section – I (Mental Ability) : **Numerals and Number Name, Number Sense (2 digit numbers),

Addition, Subtraction, Length, Weight, Time, Money, Geometrical Skills, Patterns, Odd One Out, Series

Completion, Problems Based on Figures.

**Section II (Science) : **Plants, Animals, Human Beings and Their Needs, Good Habits and Safety Rules, Air and Water, Weather and the Sky.

CLASS 2

The actual test paper has 50 questions. Time allowed : 60 minutes. There are 2 sections: 15 questions

in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) : **Numerals, number name and number sense (3 digit number), Addition, Subtraction, Time, Calendar, Measurement of weight, Length and temperature, Geometrical shapes, Money, Problems based on figures, Series completion, Patterns, Find odd numeral out. **Section – II (Science) :** Plants, Animals, Human body, Family, Food, Clothes, House, Occasions & Festivals, Occupation, Good Habits and Safety Rules, Transport & Communication, Earth and Universe.

**Class 3**

The actual test paper has 50 questions. Time allowed : 60 minutes. There are 2 sections: 15 questions in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) **: Numerals, number names and number sense (4 digit numbers), Addition, Subtraction, Fractional numbers, Multiplication, Division, Time, Straight and curved lines, Calendar, Measurement of weight and capacity, Geometrical shapes, Money, Patterns, Problems based on figures, Find odd numeral out, Series completion, Coding-decoding, Mirror image, Embedded figures.

**Section – II (Science) :** Plant and Animal Life, Human Body, Water, Food, House & Occupation, Transport and Communication, Matter, Earth & its Surroundings.

** Class 4**

The actual test paper has 50 questions. Time allowed : 60 minutes. There are 2 sections: 15 questions

in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) : **Number and numeration (5 digit number), Place-value, Addition, Subtraction, Multiplication, Division, Comparison, Geometrical shapes, Symmetry, Measurement of length, weight and capacity, Time, Money, Fractional numbers, Pictorial representation of data, Roman numerals, Multiples and factors, Perimeter of various shapes, Problems based on figures, Find odd numeral out, Series completion, Coding-decoding, Direction sense, Mathematical reasoning, Mirror images, Embedded figures, Patterns, Conversions, Number ranking, Alphabetical test.

**Section – II (Science) :** Plant and Animal Life, Human Body, Water, Matter, Transport, General activities, Earth & Universe, Life around us.

Class 5

The actual test paper has 50 questions. Time allowed : 60 minutes. There are 2 sections: 15 questions

in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) : **Number sense, Regional and roman numerals, Numbers up to lakhs, Multiples and factors, Fractional numbers, Addition, Subtraction, Multiplication, Division, Decimals, Geometrical shapes and angles, symmetry, Measurement of Length, Time, Money, Weight, Perimeter and area of Square, Rectangle and Circle, Pictorial representation of data, HCF and LCM, Problems based on figures, Find odd numeral out, Series completion, Coding-decoding, Mathematical reasoning, Mirror images, Embedded figures, Direction sense, Patterns, Number ranking, Alphabetical test.

**Section – II (Science) :** Animals, Plants and Food, Human body and Health, Water, Matter, Natural Resources & Calamities, Earth and Universe, General Science.

Class 6

The actual test paper has 50 questions. Time allowed : 60 minutes.There are 2 sections: 15 questions

in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) : **Roman numerals, Number sense, HCF and LCM, Addition and

subtraction, Multiplication and division, Fractional numbers, Decimal fractions, Geometrical shapes, Angles, Arithmetical ability, Measurements, Area and perimeter of rectangle, square, circle, triangle, Volume, Pictorial representation of data, Integers, Factors and multiples, Ratio and proportion, Percentage, Problems based on figures, Find odd numeral out, Series completion, Coding-decoding, Mathematical reasoning, Mirror images, Embedded figures, Patterns, Direction sense, Number ranking, Alphabetical test.

**Section – II (Science) :** Motion and Measurement of Distances, Light, Shadows and Reflections, Electricity & Circuits, Fun with Magnets, Air & Water, Sorting Materials into Groups, Separation of Substances, Changes Around Us, Living Organisms & Their Surroundings, Food, Health & Hygiene, Fibres to Fabrics.

**Class 7**

The actual test paper has 50 questions. Time allowed : 60 minutes.There are 2 sections: 15 questions in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) :** Integers, Fractions and Decimals, Data Handling, Simple Equations, Lines and Angles, The Triangle and its Properties, Congruence of Triangles, Comparing Quantities, Rational Numbers, Practical Geometry, Perimeter, area and volume, Algebraic Expressions, Exponents and Powers, Symmetry, Visualising Solid Shapes, Logical reasoning, Conversions, Simple probability.

**Section – II (Science) :** Heat, Motion and Time, Electric Current and its Effects, Winds, Storms and Cyclones, Light, Acids, Bases and Salts, Physical and Chemical Changes, Earth and Environment,

Fibres to Fabrics, Nutrition, Respiration, Transportation, Reproduction in Plants.

**Class 8**

The actual test paper has 50 questions.Time allowed : 60 minutes.There are 2 sections: 15 questions in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental ability) :** Rational numbers, Operation on rational numbers, Decimal representation of rational numbers, Exponents and powers, Direct and inverse variations, Comparing quantities, Algebraic expression, Factorization of algebraic expressions, Linear equation in one variable, More about triangles, Congruent triangles, Quadrilaterals, Circles, Mensuration, Statistics, Arithmetic Ability, Squares and square roots, Cubes and cube roots, Problem based on figures, Find odd numeral out, Series completion, Coding-decoding, Mathematical reasoning, Analytical reasoning, Mirror images, Embedded figures.

**Section – II (Science) : **Crop Production and Management, Microorganisms, Synthetic Fibres and Plastics, Metals and Non-metals, Coal and Petroleum, Combustion and Flame, Conservation of Plants and Animals, Cell, Reproduction in Animals, Force and Pressure, Friction, Sound, Chemical Effects of Electric Current, Some Natural Phenomena, Light, Stars and Solar System, Pollution of Air and Water.

Class 9

The actual test paper has 50 questions. Time allowed : 60 minutes. There are 2 sections: 15 questions in

section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental Ability) :** Number Systems, Polynomials, Coordinate Geometry, Linear Equations in Two Variables, Introduction to Euclid’s Geometry, Lines and Angles, Triangles, Quadrilaterals, Areas of Parallelograms and Triangles, Circles, Constructions, Heron’s Formula, Surface Areas and Volumes, Statistics, Probability, Logical (Verbal and Non-verbal) and Analytical Reasoning.

**Section – II (Science) :** Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound, Matter in Our Surroundings, Is Matter Around Us Pure, Atoms and Molecules, Structure of the Atom, The Fundamental Unit of Life, Tissues, Diversity in Living Organisms, Why Do We Fall Ill, Natural Resources, Improvement in Food Resources.

Class 10

The actual test paper has 50 questions. Time allowed : 60 minutes. There are 2 sections: 15 questions in section I and 35 in section II.

**SYLLABUS**

**Section – I (Mental Ability) :** Number Systems, Polynomials, Coordinate Geometry, Linear Equations in Two Variables, Introduction to Euclid’s Geometry, Lines and Angles, Triangles, Quadrilaterals, Areas of Parallelograms and Triangles, Circles, Constructions, Heron’s Formula, Surface Areas and Volumes, Statistics, Probability, Logical (Verbal and Non-verbal) and Analytical Reasoning.

**Section – II (Science) :** Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound, Matter in Our Surroundings, Is Matter Around Us Pure, Atoms and Molecules, Structure of the Atom, The Fundamental Unit of Life, Tissues, Diversity in Living Organisms, Why Do We Fall Ill, Natural Resources, Improvement in Food Resources.

** Class 11**

The actual test paper has 50 questions.Time allowed : 60 minutes.There are 2 sections: 20 questions in

section I and 30 in section II.

**SYLLABUS**

**Section – I (Mathematics) : **Sets, Relations and functions, Mathematical induction, Logarithms, Complex numbers & quadratic equations, Linear inequations, Differentiation, Sequences and series (A.P. & G.P. Misc.), Trigonometry, Cartesian system of rectangular coordinates, Straight lines and family of straight lines, Circles, Conic section, Trigonometry, Permutations and combinations, Binomial theorem, Statistics, Mathematical logic, Limits, Probability, Introduction to 3-D geometry, Verbal and Non Verbal Reasoning.

**OR**

**Section – I (Biology) :** Diversity in the Living world, Structural Organisation in Plants and Animals, Cell : Structure and Functions, Plant Physiology, Human Physiology.

**Section – II (Physics & Chemistry) : **Physics: Units & measurements, Mechanics, Properties of matter, Heat & thermodynamics, Oscillations, Waves. Chemistry: Some Basic Concepts of Chemistry, Structure of Atom, Classification of Elements and Periodicity in Properties, Chemical Bonding and Molecular structure, States of Matter, Thermodynamics, Equilibrium, Redox reactions, Hydrogen, The s-Block Elements, The p-Block Elements (Groups 13 and 14), Organic Chemistry – Some Basic Principles and Techniques, Hydrocarbons, Environmental Chemistry, Verbal and Non-Verbal Reasoning.

Class 12

The actual test paper has 50 questions.Time allowed : 60 minutes.There are 2 sections: 20 questions in section I and 30 in section II.

**SYLLABUS**

**Section – I (Mathematics) : **Sets, Relations and functions, Mathematical induction, Logarithms,

Complex numbers, Linear inequations, Quadratic equations, Sequences and series, Trigonometry, Cartesian system of rectangular coordinates, Straight lines and family of straight lines, Circles, Conic section, Permutations and combinations, Binomial theorem, Exponential and logarithmic series, Mathematical logic, Statistics & Probability, Three dimensional geometry, Vectors, Stocks, Shares and debentures, Average and partition values, Index numbers, Matrices and determinants, Limits, Differential calculus, Integral calculus, Verbal and nonverbal reasoning.

**OR**

**Section – I (Biology) : **Reproduction, Genetics and Evolution, Biology in Human Welfare, Biotechnology, Ecology.

**Section – II (Physics & Chemistry) :** Physics: Electricity and Magnetism, Electromagnetic induction, AC, E.M. Waves, Optics, Modern physics, Solids & semiconductor devices, Communication systems. Chemistry: Solid state, Solutions, Electrochemistry, Chemical kinetics, Surface chemistry, General principles and processes of isolation of elements, p-Block Elements (Group 15 to 18),d- & f- Block Elements, Coordination compounds, Haloalkanes and Haloarenes, Alcohols, Phenols and Ethers, Aldehydes, Ketones and Carboxylic Acids, Amines, Biomolecules, Polymers, Chemistry in Everyday Life.

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