General Science | Class 8

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    Chapter 1 Ecology ( 15 videos)  (Practice Test)

      1.1: Oxygen Cycle
      Oxygen Cycle
    1. Oxygen Cycle
      1.2: Carbon Cycle (Practice Test)
      Carbon Cycle
    1. Carbon Cycle
      9649 views
      1.3: Global Warming
      Global Warming
    1. Global Warming
      4039 views
      1.4: Interactions in Ecosystem (Practice Test)
      Competition
    1. Competition
      2. Parasitism
    2. Parasitism
      2517 views
      3. Symbiosis
    3. Symbiosis
      3557 views
      4. More on Symbiosis
    4. More on Symbiosis
      1817 views
      5. Commensalism, Grazing
    5. Commensalism, Grazing
      1221 views
      1.5: Flow of Energy In An Ecosystem (Practice Test)
      Processes in Ecosystem and Interaction Between Biotic Components
    1. Processes in Ecosystem and Interaction Between Biotic Components
      1045 views
      2. Food Chain
    2. Food Chain
      2835 views
      3. Food Web
    3. Food Web
      4222 views
      4. Ecological Pyramids
    4. Ecological Pyramids
      3570 views
      1.6: Changes In An Ecosystem And Its Effects
      Changes in an Ecosystem And Its Effects
    1. Changes in an Ecosystem And Its Effects
      1.7: Positive Impact of Human on Ecosystem (Practice Test)
      How to Control Pollution?
    1. How to Control Pollution?
      1308 views
      2. Control of Pollution
    2. Control of Pollution
      594 views

    Chapter 2 Human Nervous System ( 12 videos)  (Practice Test)

      2.1: Neuron (Practice Test)
      Nervous System
    1. Nervous System
      455 views
      2. Neuron
    2. Neuron
      639 views
      3. Neuron Types
    3. Neuron Types
      10302 views
      2.2: Parts of Human Nervous System (Practice Test)
      Working Model of The Nervous System
    1. Working Model of The Nervous System
      110 views
      2. Human Nervous System (Brain)
    2. Human Nervous System (Brain)
      396 views
      3. Brain
    3. Brain
      714 views
      4. Spinal Cord
    4. Spinal Cord
      498 views
      5. Peripheral Nervous System
    5. Peripheral Nervous System
      2.3: Voluntary and Involuntary Actions
      Actions Controlled By The Nervous System
    1. Actions Controlled By The Nervous System
      33 views
      2.4: Reflex action (Practice Test)
      Reflex Action
    1. Reflex Action
      10745 views
      2.5: Reflex Arc (Practice Test)
      Reflex Action
    1. Reflex Action
      10745 views
      2.6: Activities to Keep Brain Healthy
      Healthy Living And Physical Fitness
    1. Healthy Living And Physical Fitness

    Chapter 3 Variations, Heredity and Cell Division ( 12 videos)  (Practice Test)

      3.1: Genetics
      Genetics and Embryology
    1. Genetics and Embryology
      7526 views
      3.2: Variations
      Causes of Variations
    1. Causes of Variations
      2. Discontinuous and Continuous Variations
    2. Discontinuous and Continuous Variations
      3.3: Adaptation
      What is Adaptation?
    1. What is Adaptation?
      343 views
      3.4: Chromosome And DNA (Practice Test)
      Heredity
    1. Heredity
      2. Chromosomes, Genes and DNA
    2. Chromosomes, Genes and DNA
      14952 views
      3. Watson-Crick Model of DNA
    3. Watson-Crick Model of DNA
      65841 views
      3.5: Cell Division
      Cell Division
    1. Cell Division
      3.6: Mitosis (Practice Test)
      Mitosis, Prophase
    1. Mitosis, Prophase
      30609 views
      2. Anaphase, Telophase of Mitosis
    2. Anaphase, Telophase of Mitosis
      16891 views
      3.7: Meiosis (Practice Test)
      Metaphase I, Anaphase I and Telophase I
    1. Metaphase I, Anaphase I and Telophase I
      15853 views
      2. Meiosis-II
    2. Meiosis-II
      7798 views

    Chapter 4 Biotechnology ( 6 videos)  (Practice Test)

      4.1: Biotechnology in Field of Food & Agriculture (Practice Test)
      Role of Biotechnology In Agriculture, Food Production And Preservation
    1. Role of Biotechnology In Agriculture, Food Production And Preservation
      135 views
      2. Genetic Modifications
    2. Genetic Modifications
      89 views
      4.2: Fermented Foods (Practice Test)
      Fermentation Products
    1. Fermentation Products
      2735 views
      4.3: Biotechnology in Medicine
      Role of Biotechnology In Health And Environment
    1. Role of Biotechnology In Health And Environment
      127 views
      4.4: Applications of Biotechnology (Practice Test)
      Uses and Applications of Biotechnology (With Reference to Plants)
    1. Uses and Applications of Biotechnology (With Reference to Plants)
      381 views
      2. Uses and Applications of Biotechnology (With Reference to Animals)
    2. Uses and Applications of Biotechnology (With Reference to Animals)
      288 views

    Chapter 5 The Periodic Table of Elements ( 11 videos)  (Practice Test)

      5.1: Introduction
      The Periodic Table
    1. The Periodic Table
      5.2: Periods
      Periods in Modern Periodic Table
    1. Periods in Modern Periodic Table
      11219 views
      5.3: Groups & Classification of Elements In Groups (Practice Test)
      Modern Periodic Table
    1. Modern Periodic Table
      15946 views
      2. Distribution of Electrons in Shell
    2. Distribution of Electrons in Shell
      660 views
      3. More on Distribution of Electrons in Shell
    3. More on Distribution of Electrons in Shell
      133 views
      4. Location of Elements in The Periodic Table
    4. Location of Elements in The Periodic Table
      5.4: Metals and Non - Metals (Practice Test)
      Metals and Non-Metals
    1. Metals and Non-Metals
      2603 views
      2. More on Metals and Non-Metals
    2. More on Metals and Non-Metals
      1818 views
      3. Properties of Metals
    3. Properties of Metals
      964 views
      4. Properties of Non-Metals
    4. Properties of Non-Metals
      701 views
      5.5: Uses of Metals
      Uses of Metals
    1. Uses of Metals
      739 views

    Chapter 6 Chemical Reactions and Bonding ( 18 videos)  (Practice Test)

      6.1: Chemical Reactions (Practice Test)
      Introduction To Chemical Reactions
    1. Introduction To Chemical Reactions
      6.2: Chemical Equation and Balancing (Practice Test)
      Chemical Equation and Writing of Chemical Equation
    1. Chemical Equation and Writing of Chemical Equation
      1466 views
      2. Balancing of Chemical Equation
    2. Balancing of Chemical Equation
      3606 views
      6.3: Law of Conservation of Mass (Practice Test)
      Law of Conservation of Mass
    1. Law of Conservation of Mass
      7997 views
      6.4: Types of Chemical Reactions (Practice Test)
      Addition or Combination Reactions
    1. Addition or Combination Reactions
      1358 views
      2. Decomposition Reactions
    2. Decomposition Reactions
      1866 views
      3. Combustion Reaction
    3. Combustion Reaction
      1831 views
      4. Single Displacement Reactions
    4. Single Displacement Reactions
      1680 views
      5. Double Displacement Reactions
    5. Double Displacement Reactions
      1311 views
      6.5: Energy changes In Chemical Reactions (Practice Test)
      Exothermic and Endothermic Changes
    1. Exothermic and Endothermic Changes
      440 views
      2. Exothermic Reactions
    2. Exothermic Reactions
      3735 views
      3. Endothermic Reactions
    3. Endothermic Reactions
      2179 views
      4. Using Exothermic Reactions to Warm Food
    4. Using Exothermic Reactions to Warm Food
      1096 views
      6.6: Chemical Bonds (Practice Test)
      Why do Atoms Form Chemical Bonds?
    1. Why do Atoms Form Chemical Bonds?
      14190 views
      2. Chemical Bond
    2. Chemical Bond
      10646 views
      3. Ionic Bond
    3. Ionic Bond
      12605 views
      4. Covalent Bond
    4. Covalent Bond
      9028 views
      5. Types of Covalent Bonds
    5. Types of Covalent Bonds
      6542 views

    Chapter 7 Acids, Bases and Salts ( 19 videos)  (Practice Test)

      7.1: Introduction to Acids, Bases and Salts (Practice Test)
      Introduction to Acids and Bases
    1. Introduction to Acids and Bases
      3960 views
      2. Acids And Their Common Sources
    2. Acids And Their Common Sources
      658 views
      3. Bases
    3. Bases
      117 views
      4. Alkalis
    4. Alkalis
      680 views
      5. Concept of Salts
    5. Concept of Salts
      4385 views
      6. Types of Salts, Normal or Neutral Salts
    6. Types of Salts, Normal or Neutral Salts
      4899 views
      7. Acidic Salts
    7. Acidic Salts
      3653 views
      8. Basic Salts
    8. Basic Salts
      3106 views
      7.2: Properties of Acids , Alkalis and Salts (Practice Test)
      Concept of Acids
    1. Concept of Acids
      9746 views
      2. Concept of Bases
    2. Concept of Bases
      5662 views
      3. Concept of Salts
    3. Concept of Salts
      4385 views
      7.3: Uses of Acids, Alkalis and Salts (Practice Test)
      Uses of Acids
    1. Uses of Acids
      2493 views
      2. Uses of Bases
    2. Uses of Bases
      1646 views
      3. Uses of Alkalis
    3. Uses of Alkalis
      463 views
      4. Uses of Salts
    4. Uses of Salts
      3798 views
      7.4: Neutralization Reaction (Practice Test)
      Indicators
    1. Indicators
      3980 views
      2. Neutralization Reaction
    2. Neutralization Reaction
      1552 views
      3. Importance of Neutralization Reaction
    3. Importance of Neutralization Reaction
      7.5: pH Scale & Range with Reference to Indicator
      pH Scale
    1. pH Scale
      9484 views

    Chapter 8 Force and Pressure ( 8 videos)  (Practice Test)

      8.1: Multiple Forces
      Force
    1. Force
      47 views
      8.2: Net Force
      Balanced Forces
    1. Balanced Forces
      236 views
      2. Unbalanced Forces
    2. Unbalanced Forces
      142 views
      8.3: Pressure
      Pressure And Its Unit
    1. Pressure And Its Unit
      2. Investigate Effects Related To Pressure
    2. Investigate Effects Related To Pressure
      8.4: Buoyancy
      Buoyancy And Density Responsible For Sinking or Floating
    1. Buoyancy And Density Responsible For Sinking or Floating
      8.5: Hydraulic Elevator
      Applications of Hydraulic System
    1. Applications of Hydraulic System
      29 views
      8.6: Rocket
      Rocket
    1. Rocket

    Chapter 9 Reflection and Refraction of Light ( 19 videos)  (Practice Test)

      9.1: Properties of Light (Practice Test)
      Transparent, Opaque And Translucent Objects
    1. Transparent, Opaque And Translucent Objects
      2. Absorption of Light
    2. Absorption of Light
      1132 views
      3. Reflecting Light
    3. Reflecting Light
      1034 views
      4. Speed of Light
    4. Speed of Light
      102 views
      5. Dispersion of Light
    5. Dispersion of Light
      568 views
      9.2: Ray Model of Light
      Transmission of Light
    1. Transmission of Light
      2535 views
      9.3: Laws of Reflection (Practice Test)
      Reflecting Light
    1. Reflecting Light
      1034 views
      2. Laws of Reflection
    2. Laws of Reflection
      764 views
      3. Types of Reflection
    3. Types of Reflection
      1095 views
      4. Types of Reflecting Surfaces
    4. Types of Reflecting Surfaces
      705 views
      9.4: Image Formation By Plane Mirror
      Images Formed By a Plane Mirror
    1. Images Formed By a Plane Mirror
      592 views
      9.5: Characteristics of Image Formation
      Characteristics of Image Formation
    1. Characteristics of Image Formation
      2. Periscope
    2. Periscope
      558 views
      9.6: Colour
      Absorption of Light
    1. Absorption of Light
      1132 views
      9.7: Refraction of Light (Practice Test)
      Refraction of Light
    1. Refraction of Light
      564 views
      9.8: Spherical Mirrors (Practice Test)
      Types of Mirrors
    1. Types of Mirrors
      829 views
      2. Image Formation In Concave Mirrors
    2. Image Formation In Concave Mirrors
      190 views
      3. More on Image Formation in Concave Mirror
    3. More on Image Formation in Concave Mirror
      4. Image Formation In Convex Mirrors
    4. Image Formation In Convex Mirrors
      522 views

    Chapter 10 Electricity and Magnetism ( 11 videos)  (Practice Test)

      10.1: Electric Current
      Electric Current
    1. Electric Current
      112 views
      10.2: Voltage
      Voltage
    1. Voltage
      10.3: Electric Resistance (Practice Test)
      Resistance
    1. Resistance
      78 views
      2. Relationship Between Voltage And Resistance (Ohm's Law)
    2. Relationship Between Voltage And Resistance (Ohm's Law)
      166 views
      10.4: Electrical Power
      Electrical Power
    1. Electrical Power
      51 views
      10.5: Electric Safety Devices (Practice Test)
      Safety Devices To Avoid Electrical Hazards
    1. Safety Devices To Avoid Electrical Hazards
      80 views
      2. More on Safety Devices To Avoid Electrical Hazards
    2. More on Safety Devices To Avoid Electrical Hazards
      60 views
      10.6: Potential Hazards In Using Electricity
      Why is Electricity Dangerous?
    1. Why is Electricity Dangerous?
      47 views
      10.7: Electromagnets
      Electromagnet
    1. Electromagnet
      10.8: Applications of Electromagnets
      Stereo Speakers As An Applications of Electromagnets
    1. Stereo Speakers As An Applications of Electromagnets
      2. Electric Bell
    2. Electric Bell
      663 views

    Chapter 11 Technology in Everyday Life ( 4 videos)

      11.1: Applications of Acids & Bases in Technology
      Applications of Acids & Bases in Technology
    1. Applications of Acids & Bases in Technology
      11.2: Designing A Concave Mirror Type Solar Cooker
      Designing A Concave Mirror Type Solar Cooker
    1. Designing A Concave Mirror Type Solar Cooker
      11.3: Designing A Wind Turbine
      Designing A Wind Turbine
    1. Designing A Wind Turbine
      11.4: Working of UPS
      Working of UPS
    1. Working of UPS

    Chapter 12 Our Universe ( 11 videos)  (Practice Test)

      12.1: Galaxies (Practice Test)
      Galaxies
    1. Galaxies
      311 views
      12.2: The Milky Way Galaxy
      Milky Way Galaxy
    1. Milky Way Galaxy
      201 views
      12.3: The Life of Stars (Practice Test)
      Birth Of A Star
    1. Birth Of A Star
      102 views
      2. Death Of A Star
    2. Death Of A Star
      77 views
      3. Black Holes
    3. Black Holes
      147 views
      12.4: The Life of Sun (Practice Test)
      Birth Of A Star
    1. Birth Of A Star
      102 views
      12.5: Information From Space (Practice Test)
      Telescope
    1. Telescope
      50 views
      2. Space Telescope
    2. Space Telescope
      3. Space Probes
    3. Space Probes
      17 views
      4. Benefits of Space Exploration
    4. Benefits of Space Exploration
      29 views
      5. More Benefits of Space Exploration
    5. More Benefits of Space Exploration
      17 views