# Science 10th Std

Online Study, Important Questions with Answer Key, Book back Exercise answers and solution, Question Papers, Textbook, Students Guide, Study Material

## Unit 1: Laws of Motion

=> Laws of Motion
=> Force and Motion
=> Inertia
=> Linear Momentum
=> Newton’s Laws of Motion
=> Newton’s Second Law of Motion
=> Impulse
=> Newton’s Third Law of Motion
=> Principle of Conservation of Linear Momentum
=> Rocket Propulsion
=> Gravitation
=> Mass and Weight
=> Apparent Weight
=> Points to Remember
=> Solved Problems on Laws of Motion
=> Important Questions

## Unit 2: Optics

=> Optics
=> Properties of Light
=> Refraction of Light
=> Refraction of a Composite Light-Dispersion of Light
=> Types of scattering of Light
=> Lenses
=> Images Formed Due to Refraction Through a Convex and Concave Lens
=> Refraction Through a Convex Lens
=> Applications of Convex Lenses
=> Refraction Through a Concave Lens
=> Applications of Concave Lenses
=> Lens Formula
=> Sign Convention
=> Magnification of a Lens
=> Lens Maker’s Formula
=> Power of a Lens
=> Differences between a Convex Lens and a Concave Lens
=> Human Eye
=> Defects in Eye
=> Microscope
=> Telescope
=> Points to Remember
=> Solved Problems: Optics
=> Important Questions

## Unit 3: Thermal Physics

=> Thermal Physics
=> Temperature
=> Thermal Energy
=> Effect of Heat Energy
=> Fundamental Laws of Gases
=> Gases
=> Points to Remember
=> Solved Problems: Thermal Physics
=> Important Questions

## Unit 4: Electricity

=> Electricity
=> Electric Current
=> Electric Circuit
=> Electric Potential and Potential Difference
=> Ohm’s Law
=> Resistance of a Material
=> Electrical Resistivity Electrical Conductivity
=> System of Resistors
=> Heating Effect of Current
=> Electric Power
=> Domestic Electric Circuits
=> LED Bulb
=> LED Television
=> Points to Remember
=> Solved Problems
=> Important Questions

## Unit 5: Acoustics

=> Acoustics
=> Sound Waves
=> Reflection of Sound
=> Echoes
=> Applications Reflection of Sound
=> Doppler Effect
=> Points to Remember
=> Important Questions

## Unit 6: Nuclear Physics

=> Nuclear Physics
=> Alpha, Beta and Gamma Rays
=> Nuclear Fission
=> Nuclear Fusion
=> Safety Measures
=> Nuclear Reactor
=> Solved problem
=> Points to Remember
=> Important Questions

## Unit 7: Atoms and Molecules

=> Atoms and Molecules
=> Atom and Atomic Mass
=> Molecule and Molecular Mass
=> Difference Between Atoms and Molecules
=> Mole Concept
=> Percent Composition
=> Relationship Between Vapour Density and Relative Molecular Mass
=> Solved Problems
=> Points to Remember
=> Important Questions

## Unit 8: Periodic Classification of Elements

=> Periodic Classification of Elements
=> Modern Periodic Law
=> Modern Periodic Table
=> Periodic Trends in Properties
=> Metallurgy
=> Occurrence of Ores in Tamil Nadu
=> Properties of Metals
=> Extractive Metallurgy of Aluminium
=> Extractive Metallurgy of Copper
=> Extractive Metallurgy of Iron
=> Alloys
=> Corrosion
=> Pamban Bridge
=> Points to Remember
=> Important Questions

## Unit 9: Solutions

=> Solutions
=> Solutions in Day-To-Day Life
=> Components of Solutions
=> Types of Solutions
=> Factors affecting solubility
=> Concentration of a Solution
=> Hydrated salts and Water of Crystallization
=> Hygroscopy
=> Deliquescence
=> Problems Based on Solubility and Percentage by Mass and Volume
=> Points to Remember
=> Important Questions

## Unit 10: Types of Chemical Reactions

=> Types of Chemical Reactions
=> Types of Chemical Reactions
=> Rate of a Chemical Reaction
=> Factors influencing the rate of a reaction
=> State of Equilibrium
=> Ionic Product of Water
=> pH Scale
=> Role of pH in Everyday Life
=> pH Calculation
=> Solved Example Problems with Answers, Solution
=> Points to Remember
=> Important Questions

## Unit 11: Carbon and its Compounds

=> Carbon and its Compounds
=> General Characteristics of Organic Compounds
=> Classification of Organic Compounds Based on the Pattern of Carbon Chain
=> Classes of Organic Compounds (Based on the Kind of Atoms)
=> Homologous Series
=> Nomenclature of Organic Compounds
=> Ethanol
=> Ethanoic acid
=> Organic Compounds in Daily Life
=> Soaps and Detergents
=> Points to Remember
=> Important Questions

## Unit 12: Plant Anatomy and Plant Physiology

=> Introduction
=> Tissues
=> Tissue system
=> Internal Structure of Dicot Root (Bean)
=> Internal Structure of Monocot Root (Maize)
=> Internal Structure of Dicot Stem (Sunflower)
=> Internal Structure of Monocot Stem (Maize)
=> Internal Structure of Dicot or Dorsiventral Leaf (Mango)
=> Internal Structure of Monocot or Isobilateral Leaf
=> Plastids
=> Mitochondria
=> Types of Respiration
=> Points to Remember
=> Important Questions

## Unit 13: Structural Organisation of Animals

=> Structural Organisation of Animals
=> The Indian Cattle Leech (Hirudinaria granulosa)
=> Rabbit (Oryctolagus cuniculus)
=> Points to Remember
=> Important Questions

## Unit 14: Transportation in Plants and Circulation in Animals

=> Transportation in Plants and Circulation in Animals
=> Means of Transport in Plants
=> Root Hair-Water Absorbing Unit
=> Pathway of Water Absorbed by Roots
=> Types of Movement of Water into the Root Cells
=> Transpiration in Plants
=> Root Pressure
=> Uptake of Minerals
=> Translocation of Mineral Ions
=> Phloem Transport
=> Translocation of Sugars
=> Ascent of Sap and its Events - An Overview
=> Blood
=> Blood Vessels - Arteries and Veins
=> Types of Circulatory System
=> Structure of Human Heart
=> Blood pressure
=> Blood Groups
=> Lymphatic System
=> Points to Remember
=> Important Questions

## Unit 15: Nervous System

=> Introduction
=> Nervous System
=> Transmission of Nerve Impulse
=> Human Nervous System
=> Cerebrospinal Fluid
=> Reflex Action
=> Peripheral Nervous System
=> Autonomic Nervous System
=> Points to Remember
=> Important Questions

## Unit 16: Plant and Animal Hormones

=> Plant and Animal Hormones
=> Types of Plant Hormones
=> Human Endocrine Glands
=> Points to Remember
=> Important Questions

## Unit 17: Reproduction in Plants and Animals

=> Reproduction in Plants and Animals
=> Vegetative Reproduction
=> Asexual Reproduction
=> Sexual Reproduction in Plants
=> Pollination
=> Agents of Cross Pollination
=> Fertilization in Plants
=> Sexual Reproduction in Human
=> Gametogenesis
=> Menstrual Cycle-Process of Ovulation
=> Fertilization to Foetal Development
=> Reproductive Health
=> Population Explosion and Family Planning
=> Urinary Tract Infection (UTI)
=> Personal Hgiene
=> Points to Remember
=> Important Questions

## Unit 18: Heredity

=> Heredity
=> Gregor Johann Mendel - Father of Genetics
=> Monohybrid Cross - Inheritance of One Gene
=> Dihybrid Cross-Inheritance Two Genes and Law of Independent Assortment
=> Mendel’s Laws
=> Chromosomes, DNA and Genes
=> Structure of DNA
=> Sex Determination
=> Points to Remember
=> Important Questions

## Unit 19: Origin and Evolution of Life

=> Origin and Evolution of Life
=> Theories on Origin of Life
=> Evidences of Evolution
=> Theories of Evolution
=> Variation
=> Paleobotany
=> Ethnobotany
=> Astrobiology/Exobiology
=> Points to Remember
=> Important Questions

## Unit 20: Breeding and Biotechnology

=> Introduction
=> Modern Agricultural Practices and Crop Improvement
=> Green Revolution
=> Methods of Plant Breeding for Crop Improvement
=> Animal Breeding
=> Genetic Engineering
=> Biotechnology in Medicine
=> Stem Cells
=> DNA Fingerprinting Technology
=> Genetically Modified Organisms (GMOs)
=> Points to Remember
=> Important Questions

## Unit 21: Health and Diseases

=> Introduction
=> Abuse and Types of Abuse
=> Drug, Alcohol and Tobacco Abuse
=> Drug Abuse
=> Tobacco Abuse
=> Alcohol Abuse
=> Rehabilitation Measures for Alcoholics
=> Diseases and Disorders due to Lifestyle Modifications
=> Diabetes Mellitus
=> Obesity
=> Heart Disease
=> Cancer
=> AIDS (Acquired Immunedeficiency Syndrome)
=> Points to Remember
=> Important Questions

## Unit 22: Environmental Management

=> Introduction
=> Conservation and Judicious Use of Resources
=> Forest and its Importance
=> Wildlife and its Conservation
=> Soil Erosion
=> Renewable and Non-Renewable Energy Resources
=> Non-Conventional (Alternative) Energy Resources
=> Rainwater Harvesting
=> Electrical Energy Management
=> E-Wastes and its Management
=> Sewage Management
=> Solid Waste Management
=> Points to Remember
=> Important Questions

## Unit 23: Visual Communication

=> Introduction
=> File, Folder
=> Scratch
=> Important Questions

## Physics Practicals

=> Determination of weight of an object using the principle of moments
=> Determination of focal length of a convex lens
=> Determination of resistivity

## Chemistry Practicals

=> Identification of the dissolution of the given salt whether it is exothermic or endothermic
=> Testing the solubility of the salt
=> Testing the water of hydration of salt
=> Test the given sample for the presence of acid or base

## Bio-Botany Practicals

=> Photosynthesis-Test tube and Funnel Experiment (Demonstration)
=> Parts of a Flower
=> To Study the Law of Dominance
=> Observation of Transverse Section of Dicot stem and Dicot Root

## Bio-Zoology Practicals

=> Identification of longitudinal section (L.S) of the human heart
=> Identification of L.S of the human brain
=> Identification of Blood Cells
=> Identification of Endocrine Glands