Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

# Tamil Nadu Board Samacheer Kalvi Solutions for Class 9th Science Answers Guide

## Tamil Nadu Board of Secondary Education Class 9 Science Solutions Guide

Shaalaa provides the Tamil Nadu Board of Secondary Education Class 9 Science Solutions Digest. Shaalaa is undoubtedly a site that most of your classmates are using to perform well in exams.

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## Tamil Nadu Board of Secondary Education Class 9 Science Textbook Solutions

Questions and answers for the Class 9 Science Textbook on this page. Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science Digest Tamil Nadu Board of Secondary Education will help students understand the concepts better.

## Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science Chapterwise List | Class 9 Science Digest

The answers to the Tamil Nadu Board Samacheer Kalvi books are the best study material for students. Listed below are the chapter-wise Tamil Nadu Board Samacheer Kalvi Science Class 9 Solutions Tamil Nadu Board of Secondary Education.

## Tamil Nadu Board Samacheer Kalvi Class 9 solutions for other subjects

We also provide solutions for other subjects to help you top the exams. These Tamil Nadu Board Samacheer Kalvi solutions are specially curated with respect to the exam pattern and old papers. Find the best questions and solutions here. Click now to access it.

## Chapters covered in Tamil Nadu Board Samacheer Kalvi Solutions for Class 9th Science Answers Guide

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 1: Measurement

Concepts covered in Measurement are Accuracy in Measurements, Devices for Measuring Mass, International System of Units (SI System), Mass and Weight, Measurement of Length, Measurement of Mass, Measurement of Time, Measurements, Measuring Larger Distances, Measuring Smaller Distances, Physical Quantities, Rules and Conventions for Writing SI Units and Their Symbols, Scales of Thermometers, Screw Gauge, Temperatures, Unit and Its Types, Unit Prefixes, Unit Systems, Vernier Callipers

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 1: Measurement exercises

ExerciseNo. of questionsPages
Exercise3611 to 12

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 2: Motion

Concepts covered in Motion are Acceleration and Retardation, Centrifugal Forces, Centripetal Acceleration and Centripetal Force, Displacement - Time Graph Or Distance - Time Graph, Distance and Displacement, Equations of Motion by Graphical Method, Motion and Rest, Motion of Freely Falling Body, Multiple Motion, Speed, Types of Motion, Uniform Circular Motion (UCM), Velocity, Velocity - Time Graphs

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 2: Motion exercises

ExerciseNo. of questionsPages
Exercise2823 to 25

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 3: Fluids

Concepts covered in Fluids are Application of Principle of Flotation, Archimedes' Principle, Atmospheric Pressure, Buoyancy Force (Upthrust Force), Density and It’s Unit, Factors Affecting Liquid Pressure, Gauge Pressure and Absolute Pressure, Hydraulic Machines: Hydraulic Press (Or Bramah Press), Law of Floatation, Liquid Pressure, Measurement of Atmospheric Pressure, Mercury Barometer (Simple Barometer), Pascal’s Law, Pressure Exerted by a Liquid Column, Principle of Floatation (Laws of Flotation), Relative Density and Its Unit, Thrust and Pressure

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 3: Fluids exercises

ExerciseNo. of questionsPages
Exercise3436 to 37

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 4: Electric charge and Electric current

Concepts covered in Electric charge and Electric current are Chemical Effects of Electric Current, Dangers of Electricity, Direction of the Electric Current - Conventional and Electronic Flow, Effects of Electric Current, Electric Charge, Electric Circuit, Electric Current, Electric Field, Electric Force, Electro-motive Force (E.M.F.) of a Cell, Heating Effect of Electric Current, Magnetic Effect of Electric Current, Potential and Potential Difference, Precautions to Be Taken While Using Electricity, Resistance (R), Symbols and Functions of Various Components of an Electric Circuits, Types of Circuits: Parallel Circuit, Types of Circuits: Series Circuit, Types of current: Alternating Current (A.C.) and Direct Current (D.C.)

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 4: Electric charge and Electric current exercises

ExerciseNo. of questionsPages
Exercise3149 to 50

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 5: Magnetism and Electromagnetism

Concepts covered in Magnetism and Electromagnetism are Alternating Current (A.C.) Generator, Applications of Electromagnets, Classification of Magnets, Direct Current Motor, Distinction Between an A.C. Generator and D.C. Motor, Electric Generator, Electric Motor, Electromagnetic Induction, Faraday's Laws of Electromagnetic Induction, Force on a Current Carrying Conductor in a Magnetic Field, Force on Parallel Current Carrying Conductors, Magnet and Its Characteristics, Magnetic Effect of Electric Current, Magnetic Field, Magnetic Field Lines, Transformer, Types of Transformer

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 5: Magnetism and Electromagnetism exercises

ExerciseNo. of questionsPages
Exercise2663 to 64

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 6: Light

Concepts covered in Light are Concave Mirror, Convex Mirror, Formation of Image by Reflection: Real and Virtual Image, Image Formation by Concave Mirror, Image Formation by Convex Mirror, Images Formed by Spherical Mirrors, Lateral Inversion, Law of Reflection of Light, Law of Refraction of Light, Light, Linear Magnification (M) Due to Spherical Mirrors, Mirror Equation/Formula, Reflection of Light, Refraction of Light, Refraction of Light from a Plane Transparent Surface, Rules for the Construction of Image Formed by a Spherical Mirror, Sign Convention for Reflection by Spherical Mirrors, Speed of Light, Spherical Mirrors, Total Internal Reflection

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 6: Light exercises

ExerciseNo. of questionsPages
Exercise3877 to 78

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 7: Heat

Concepts covered in Heat are Absolute Zero, Change of State of Matter, Concept of Boiling (Vaporization), Concept of Condensation (Liquefaction), Concept of Desublimation (Deposition), Concept of Evaporation, Concept of Freezing (Solidification), Concept of Melting (Fusion), Concept of Sublimation, Conduction, Convection, Effects of Heat, Heat and Its Unit, Latent Heat and Specific Latent Heat, Radiation, Scales of Thermometers, Specific Heat Capacity, Temperatures, Thermal Capacity (Heat Capacity), Transfer of Heat

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 7: Heat exercises

ExerciseNo. of questionsPages
Exercise2678 to 89

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 8: Sound

Concepts covered in Sound are Application of Reflection of Sound, Characteristics of a Sound Wave, Echoes, Electrocardiogram (ECG), Human Ear, Law of Reflection of Light, Loudness and Intensity, Pitch (or shrillness) and frequency, Production of Sound, Propagation of Sound, Properties of Sounds, Quality (Or Timbre) and Wave Form, Reflection of Sound, Reverberation, SONAR, Sound, Sound Need a Medium to Travel, Speed of Sound in Different Media, Speed of Sound (Velocity of Sound), Ultrasonic Sound Or Ultrasound

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 8: Sound exercises

ExerciseNo. of questionsPages
Exercise24100 to 101

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 9: Universe

Concepts covered in Universe are Galaxy and Its Types, Geo Centric Theory, Heliocentric Model, International Space Station (ISS), Kepler’s Laws, Orbits of Artificial Satellites, Other Bodies of the Solar System, Satellites, Space Missions Away from Earth, Stars and Its Types, Telescope, The Solar System, The Sun, Universe

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 9: Universe exercises

ExerciseNo. of questionsPages
Exercise31111

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 10: Matter Around Us

Concepts covered in Matter Around Us are Centrifugation Method, Chromatography Method, Colloidal Solution, Components of Solutions, Compound, Differences Between Elements, Compounds, and Mixtures, Different Types of Solutions, Elements, Fractional Distillation Method, Impure Substance, Matter (Substance), Methods of Separation, Mixture, Pure Substances, Separation of Mixtures, Simple Distillation Method, Solutions, Solvent Extraction (Using a Separating Funnel Method), Sublimation Method, Types of Matter, Types of Mixtures

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 10: Matter Around Us exercises

ExerciseNo. of questionsPages
Exercise29123 to 124

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 11: Atomic Structure

Concepts covered in Atomic Structure are Atomic Mass, Atomic Number (Z), Mass Number (A), and Number of Neutrons (n), Discovery of Charged Particles in Matter, Electronic Configuration of Atom, Gay Lussac’s Law of Gaseous Volumes, Introduction of Atoms, Isobars, Isotones or Isoneutronic, Isotopes, Law of Multiple Proportions, Law of Reciprocal Proportions, Laws of Chemical Combination, Limitations of Rutherford’s Atomic Model, Lord Rutherford’s Atomic model, Neils Bohr’s Model of an Atom, Neutrons (n), Quantum Numbers, Structure of an Atom, Valency, Valency Electrons

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 11: Atomic Structure exercises

ExerciseNo. of questionsPages
Exercise30135 to 138

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 12: Periodic Classification of Elements

Concepts covered in Periodic Classification of Elements are Advantage and Disadvantage of Modern Periodic Table, Alloys, Dobereiner’s Triads, History of Periodic Table: Early Attempts at the Classification of Elements, Mendeleev’s Periodic Table, Merits and Demerits of Mendeleev’s Periodic Table, Modern Periodic Law, Newland's Law of Octaves, Periodic Properties, Periodic Properties: Metallic Character, Periodic Properties: Metalloid Character, Periodic Properties: Non-metallic Character, The Modern Periodic Table, Types of Element on the Basis of Periodic Table

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 12: Periodic Classification of Elements exercises

ExerciseNo. of questionsPages
Exercise18146

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 13: Chemical Bonding

Concepts covered in Chemical Bonding are Chemical Bond, Coordinate Bond, Electrovalent (or Ionic) Bond, Fajan’s Rule, Formation of an Electrovalent (or Ionic) Bond, Formation of Coordinate Bond, Formation of Covalent Bond, Oxidation, Reduction and Redox Reactions, The Covalent Bond, Types of Chemical Bond

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 13: Chemical Bonding exercises

ExerciseNo. of questionsPages
Exercise31159 to 1601

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 14: Acids, Bases and Salts

Concepts covered in Acids, Bases and Salts are Acids, Aquaregia, Bases (Alkalis), Classification of Acids, Classification of Bases (Alkalis), Classification of Salts, Identification of Salts, Important Salts in Daily Life, Preparation and Uses of Baking Soda, Preparation and Uses of Bleaching Powder, Preparation and Uses of Plaster of Paris, Preparation and Uses of Washing Soda, Properties of Acids, Properties of Bases (Alkalis), Properties of Salts, Salts, Similarities and Differences Between Acids and Bases, Strength of Acidic or Basic Solutions, Test for Acidity and Alkalinity, Uses of Acids, Uses of Bases, Water of Crystallization

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 14: Acids, Bases and Salts exercises

ExerciseNo. of questionsPages
Exercise20170 to 171

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 15: Carbon and its Compounds

Concepts covered in Carbon and its Compounds are Allotropy and Allotropes of Carbon, Carbon: a Versatile Element, Carbon Compounds in Everyday Life, Chemical Properties of Carbon Compound, Classification of Compounds of Carbon, Crystalline Allotropes of Carbon: Diamond, Crystalline Allotropes of Carbon: Fullerene, Crystalline Allotropes of Carbon: Graphite, Discovery of Carbon Milestones, Harmful Effects of Plastics, Identifying Different Types of Plastics: Resin Codes, Man-made Fibre: Plastics, New Rules to Make Tamil Nadu Plastic Free, Physical Properties of Carbon Compound, Role of Students in the Prevention of Plastic Pollution, Special Features of Carbon

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 15: Carbon and its Compounds exercises

ExerciseNo. of questionsPages
Exercise24183

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 16: Applied Chemistry

Concepts covered in Applied Chemistry are Agricultural Chemistry, Anaesthetics, Analgesics, Antacid, Antibiotics, Antimalarial, Antipyretic, Antiseptics and Disinfectants, Applied Chemistry, Dye Chemistry, Electro Chemical Cells, Electrochemistry, Food Chemistry, Forensic Chemistry, Nanochemistry, Pharmaceutical Chemistry, Radiochemistry

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 16: Applied Chemistry exercises

ExerciseNo. of questionsPages
Exercise25196 to 197

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 17: Animal Kingdom

Concepts covered in Animal Kingdom are Biodiversity, Chordata: Vertebrata, Classification, Invertebrata and Vertebrata, New Criteria for Basis of Classification, Nomenclature, Phylum: Annelida, Phylum: Arthropoda, Phylum: Aschelminthes, Phylum: Cnidaria/Coelenterata, Phylum: Echinodermata, Phylum: Hemichordata, Phylum: Mollusca, Phylum: Platyhelminthes, Phylum: Porifera, Subphylum: Prochordata, Taxonomic Hierarchy of Living Organisms: Unit of Classification, Taxonomy and Systematics

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 17: Animal Kingdom exercises

ExerciseNo. of questionsPages
Exercise42208 to 209

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 18: Organisation of Tissues

Concepts covered in Organisation of Tissues are Animal Tissues, Cell Division: an Essential Life Process, Complex Permanent Tissue: Phloem Structure and Function (Conducting Tissue), Complex Permanent Tissues, Complex Permanent Tissue: Xylem Structure and Function (Conducting Tissue), Connective Tissue, Differences Between Mitosis and Meiosis, Differences Between Xylem and Phloem, Epithelial Tissue, Meiosis as a Reduction Division, Meristems or Meristematic Tissues, Mitosis and Its Phases, Muscular Tissue, Nervous Tissue, Permanent Tissue, Phases of Mitosis: Cytokinesis (Division of Cytoplasm), Phases of Mitosis: Karyokinesis (Division of Nucleus), Plant and Animals Tissue, Plant Tissues, Significance of Meiosis, Significance of Mitosis, Simple Permanent Tissues (Supporting Tissue), Stages of Meiosis: Meiosis I, Stages of Meiosis: Meiosis II, Tissues - “The Teams of Workers”

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 18: Organisation of Tissues exercises

ExerciseNo. of questionsPages
Exercise28223 to 224

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 19: Plant Physiology

Concepts covered in Plant Physiology are Co-ordination in Plant: Tropism in Plants, Kinds of Transpiration, Nastic Movements, Photosynthesis - Food Making Process in Plants, Process of Photosynthesis, Transpiration

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 19: Plant Physiology exercises

ExerciseNo. of questionsPages
Exercise38230 to 232

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 20: Organ Systems in Animals

Concepts covered in Organ Systems in Animals are Absorption of Food, Accessory Excretory Organs, Assimilation of Food, Dialysis and Artificial Kidney, Function of the Kidney - “Production of Urine”, Human Digestive System, Human Excretory System, Human Organ System, Human Reproductive System, Kidney and Its Internal Structure, Kidney Tubule (Nephrons), Liver, Pancreas, Swallowing and Peristalsis, The Female Reproductive System, The Food Pipe/Oesophagus, The Large Intestine, The Male Reproductive System, The Mouth and Buccal Cavity, The Salivary Glands, The Small Intestine, The Stomach, The Teeth and Its Structure, Tongue

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 20: Organ Systems in Animals exercises

ExerciseNo. of questionsPages
Exercise39244 to 245

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 21: Nutrition and Health

Concepts covered in Nutrition and Health are Component of Food, Component of Food: Carbohydrates, Component of Food: Fats (Lipids), Component of Food: Minerals, Component of Food: Proteins, Component of Food: Vitamin, Deficiency Diseases, Diseases Due Deficiency in Carbohydrates, Diseases Due Deficiency in Fats, Diseases Due Deficiency in Minerals, Diseases Due Deficiency in Proteins, Diseases Due Deficiency in Vitamin, Food Adulteration, Food and Its Types, Food Quality Control, Methods of Food Preservation, Nutrients and Nutrition, Preservation of Food, Spoilage of Food

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 21: Nutrition and Health exercises

ExerciseNo. of questionsPages
Exercise42254 to 256

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 22: World of Microbes

Concepts covered in World of Microbes are Airborne Diseases, Airborne Diseases Caused by Bacteria, Airborne Diseases Caused by Virus, Bacteria, Categories of Disease, Contamination of Water and Water Borne Diseases, Disease, Diseases Transmitted by Animals, Fungi, Harmful Effects of Microorganisms (Microbes), Helminthic Diseases, Manifestation of Diseases, Microorganisms (Microbes) and Microbiology, Prions, Protozoan Diseases, Sexually Transmitted Diseases (STD), Uses of Microorganisms (Microbes), Vaccination and Immunization, Vector Borne Diseases, Viruses, Waterborne Diseases Caused by Bacteria, Waterborne Diseases Caused by Virus

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 22: World of Microbes exercises

ExerciseNo. of questionsPages
Exercise43270 to 272

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 23: Economic Biology

Concepts covered in Economic Biology are Aeroponics, Apiculture (Bee Farming), Aquaculture, Aquaponics, Biofertilizers, Dairy Farming, Horticulture, Hydroponics, Manuring (Biomanuring), Medicinal Plant, Mushroom Cultivation, Pisciculture (Fish Farming), Prawn Culture, Vermicomposting

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 23: Economic Biology exercises

ExerciseNo. of questionsPages
Exercise40287 to 288

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 24: Environmental Science

Concepts covered in Environmental Science are Adaptation for Blending with the Surroundings, Adaptation in Aquatic Plants (Hydrophytes), Adaptation in Desert Plants (Xerophytes), Adaptation in Grassland Plants (Mesophytes), Adaptations of Plants, Biogeochemical Cycle, Fresh Water Management, International Union for Conservation of Nature and Natural Resources (IUCN), Nitrogen Cycle, The Carbon Cycle, Waste Water Management, Water Cycle

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 24: Environmental Science exercises

ExerciseNo. of questionsPages
Exercise27300

### Tamil Nadu Board Samacheer Kalvi Solutions for Class 9 Science (Class 9) Chapter 25: Computer – LibreOffice Impress

Concepts covered in Computer – LibreOffice Impress are Libreoffice, Presentation

#### Tamil Nadu Board Samacheer Kalvi Class 9 Science (Class 9) Chapter 25: Computer – LibreOffice Impress exercises

ExerciseNo. of questionsPages
Exercise9308

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