General Science | Class 8

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    Chapter 1 The Nervous System (10 videos) (Practice Test)

      1.1: The Nervous System (Practice Test)
      Nervous System
    1. Nervous System
      455 views
      2. Human Nervous System (Brain)
    2. Human Nervous System (Brain)
      396 views
      3. Brain
    3. Brain
      714 views
      4. Peripheral Nervous System (PNS)
    4. Peripheral Nervous System (PNS)
      6602 views
      5. Spinal Cord
    5. Spinal Cord
      498 views
      6. Neuron
    6. Neuron
      639 views
      7. Neuron Types
    7. Neuron Types
      10302 views
      1.2: Working Model of the Nervous System (Practice Test)
      Working Model of The Nervous System
    1. Working Model of The Nervous System
      110 views
      2. Actions Controlled By The Nervous System
    2. Actions Controlled By The Nervous System
      33 views
      1.3: Reflex Action (Practice Test)
      Reflex Action
    1. Reflex Action
      10745 views

    Chapter 2 Kidneys and Excretion (10 videos) (Practice Test)

      2.1: Excretion (Practice Test)
      Excretion in Plants
    1. Excretion in Plants
      15550 views
      2. Excretion in Animals
    2. Excretion in Animals
      9564 views
      3. Excretion in Human
    3. Excretion in Human
      7212 views
      2.2: Excretory System (Practice Test)
      Excretion in Human
    1. Excretion in Human
      7212 views
      2. Structure of Kidney
    2. Structure of Kidney
      87 views
      3. Structure of Nephron
    3. Structure of Nephron
      11277 views
      4. Functions of Kidney
    4. Functions of Kidney
      27826 views
      2.3: Malfunctioning of Kidneys (Practice Test)
      Kidney Stone
    1. Kidney Stone
      4168 views
      2. Kidney (Renal) Failure, Dialysis
    2. Kidney (Renal) Failure, Dialysis
      13435 views
      3. Kidney Transplant
    3. Kidney Transplant
      2333 views

    Chapter 3 Heredity in Living Organisms (9 videos) (Practice Test)

      3.1: Cell Division (Practice Test)
      Cells
    1. Cells
      11005 views
      2. Cell Cycle
    2. Cell Cycle
      20785 views
      3. Mitosis, Prophase
    3. Mitosis, Prophase
      30609 views
      4. Metaphase I, Anaphase I and Telophase I
    4. Metaphase I, Anaphase I and Telophase I
      15853 views
      5. Difference Between Mitosis And Meiosis
    5. Difference Between Mitosis And Meiosis
      152 views
      3.2: Chromosomes, Genes and DNA (Practice Test)
      Concept of Gene
    1. Concept of Gene
      14952 views
      2. Advance (Watson and Crick's Model)
    2. Advance (Watson and Crick's Model)
      65841 views
      3. Transmission of Characters (Inheritable And Non-inheritable Characters)
    3. Transmission of Characters (Inheritable And Non-inheritable Characters)
      29 views
      3.3: Heredity (Practice Test)
      Heredity
    1. Heredity

    Chapter 4 Biotechnology (9 videos) (Practice Test)

      4.1: Introduction to Biotechnology (Practice Test)
      Introduction To Biotechnology
    1. Introduction To Biotechnology
      202 views
      4.2: DNA Replication (Practice Test)
      Replication of DNA
    1. Replication of DNA
      16059 views
      4.3: Chromosomes, Genes and DNA (Practice Test)
      Concept of Gene
    1. Concept of Gene
      14952 views
      4.4: Introduction of Gene into Bacterium (Practice Test)
      Recombinant DNA Technology
    1. Recombinant DNA Technology
      27401 views
      2. Introduction of Genes Into Bacterium
    2. Introduction of Genes Into Bacterium
      120 views
      4.5: Genetic Modifications (Practice Test)
      Genetic Modifications
    1. Genetic Modifications
      89 views
      4.6: Applications of Biotechnology (Practice Test)
      Production of Vaccines From Genetically Modified Bacterium
    1. Production of Vaccines From Genetically Modified Bacterium
      28 views
      2. Role of Biotechnology In Agriculture, Food Production And Preservation
    2. Role of Biotechnology In Agriculture, Food Production And Preservation
      135 views
      3. Role of Biotechnology In Health And Environment
    3. Role of Biotechnology In Health And Environment
      127 views

    Chapter 5 Pollution and the Environment (20 videos) (Practice Test)

      5.1: Introduction (Practice Test)
      Introduction to Pollution
    1. Introduction to Pollution
      492 views
      5.2: Air Pollutants and Their Sources (Practice Test)
      Sources of Air Pollutants
    1. Sources of Air Pollutants
      2311 views
      2. Pollutants of Sulphur Compound
    2. Pollutants of Sulphur Compound
      1880 views
      3. Carbon Monoxide as Pollutant
    3. Carbon Monoxide as Pollutant
      3165 views
      4. Ground Level Ozone And Heavy Metals As Air Pollutants
    4. Ground Level Ozone And Heavy Metals As Air Pollutants
      5.3: Harmful Effects of Pollution (Practice Test)
      Harmful Effects of Air Pollutants
    1. Harmful Effects of Air Pollutants
      33 views
      2. Problems Caused by Pollutants in Humans
    2. Problems Caused by Pollutants in Humans
      5.4: How to Control Pollution? (Practice Test)
      How to Control Pollution?
    1. How to Control Pollution?
      1308 views
      2. Control and Prevention Measures of Pollution
    2. Control and Prevention Measures of Pollution
      594 views
      5.5: Effects of Human Activities on Environment (Practice Test)
      Green House Effect
    1. Green House Effect
      5647 views
      2. Depletion of Ozone
    2. Depletion of Ozone
      6088 views
      3. Effect of Ozone Depletion
    3. Effect of Ozone Depletion
      3297 views
      4. Global Warming
    4. Global Warming
      4039 views
      5. Effect of Global Warming
    5. Effect of Global Warming
      1973 views
      6. Acid Rain
    6. Acid Rain
      6450 views
      7. Effect of Acid Rain
    7. Effect of Acid Rain
      3475 views
      8. Smog as Pollutant
    8. Smog as Pollutant
      2625 views
      9. Deforestation
    9. Deforestation
      32 views
      10. Lack of Natural Resources
    10. Lack of Natural Resources
      16 views
      11. Ways of savings Ours Surroundings
    11. Ways of savings Ours Surroundings
      88 views

    Chapter 6 Chemical Reactions (24 videos) (Practice Test)

      6.1: Chemical Reactions (Practice Test)
      Introduction To Chemical Reactions
    1. Introduction To Chemical Reactions
      2. Applications of Chemical Reactions
    2. Applications of Chemical Reactions
      50 views
      6.2: Chemical Equation and Their 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: Nature of a Chemical Change in Chemical Reactions (Practice Test)
      Chemical Reactions or Chemical Change
    1. Chemical Reactions or Chemical Change
      1411 views
      2. Measuring Speed of Chemical Reactions (Gas)
    2. Measuring Speed of Chemical Reactions (Gas)
      231 views
      3. Factors Affecting the Speed of a Reaction
    3. Factors Affecting the Speed of a Reaction
      151 views
      4. Effect of Concentration on Speed of Reaction
    4. Effect of Concentration on Speed of Reaction
      3542 views
      5. Effect of Pressure on Speed of Reaction
    5. Effect of Pressure on Speed of Reaction
      853 views
      6. Effect of Temperature on Speed of Reaction
    6. Effect of Temperature on Speed of Reaction
      3202 views
      7. Effect of Particle Size on Speed of Reaction
    7. Effect of Particle Size on Speed of Reaction
      1908 views
      6.5: Types of Chemical Reactions (Practice Test)
      Chemical Reactions or Chemical Change
    1. Chemical Reactions or Chemical Change
      1411 views
      2. Decomposition Reactions
    2. Decomposition Reactions
      1866 views
      3. Combustion Reaction
    3. Combustion Reaction
      1831 views
      4. Addition or Combination Reactions
    4. Addition or Combination Reactions
      1358 views
      5. Single Displacement Reactions
    5. Single Displacement Reactions
      1680 views
      6. Double Displacement Reactions
    6. Double Displacement Reactions
      1311 views
      7. Oxidation and Reduction Reactions
    7. Oxidation and Reduction Reactions
      7915 views
      8. Neutralization Reaction
    8. Neutralization Reaction
      1552 views
      9. Introduction to Electrolysis
    9. Introduction to Electrolysis
      4837 views
      6.6: Energy Changes in Chemical Reactions (Practice Test)
      Exothermic Reactions
    1. Exothermic Reactions
      3735 views
      2. Endothermic Reactions
    2. Endothermic Reactions
      2179 views
      3. Using Exothermic Reactions to Warm Food
    3. Using Exothermic Reactions to Warm Food
      1096 views

    Chapter 7 Acids, Alkalis, and Salts (20 videos) (Practice Test)

      7.1: Introduction to Acids, Alkalis, and Salts (Practice Test)
      Introduction to Acids and Bases
    1. Introduction to Acids and Bases
      3960 views
      2. Concept of Acids
    2. Concept of Acids
      9746 views
      3. Role of Water For Acidity
    3. Role of Water For Acidity
      154 views
      4. Copncept of Bases
    4. Copncept of Bases
      5662 views
      5. Bases
    5. Bases
      117 views
      6. Alkalis
    6. Alkalis
      680 views
      7. Properties of Alkalis
    7. Properties of Alkalis
      209 views
      8. Concept of Salts
    8. Concept of Salts
      4385 views
      9. Properties of Salts
    9. Properties of Salts
      2379 views
      10. Importance of pH
    10. Importance of pH
      346 views
      7.2: Uses of Acids, Alkalis, and Salts (Practice Test)
      Uses of Acids
    1. Uses of Acids
      2493 views
      2. Uses of Alkalis
    2. Uses of Alkalis
      463 views
      3. Uses of Bases
    3. Uses of Bases
      1646 views
      4. Uses of Calcium Hydroxide
    4. Uses of Calcium Hydroxide
      5. Uses of Ammonium Hydroxide
    5. Uses of Ammonium Hydroxide
      6. Uses of pH
    6. Uses of pH
      4130 views
      7. Uses of Salts
    7. Uses of Salts
      3798 views
      7.3: Indicators (Practice Test)
      Indicators
    1. Indicators
      3980 views
      2. Universal Indicator
    2. Universal Indicator
      2293 views
      3. Natural Indicators
    3. Natural Indicators
      442 views

    Chapter 8 Pressure (11 videos) (Practice Test)

      8.1: Pressure and its Units (Practice Test)
      Pressure and Standard Atmospheric Pressure
    1. Pressure and Standard Atmospheric Pressure
      10827 views
      2. Introduction to Pressure
    2. Introduction to Pressure
      4202 views
      8.2: Hydraulics (Practice Test)
      Pascal’s Law
    1. Pascal’s Law
      4297 views
      2. Pascal’s Law
    2. Pascal’s Law
      5409 views
      3. Applications of Hydraulic System
    3. Applications of Hydraulic System
      29 views
      8.3: Gases Under Pressure (Practice Test)
      Pressure of Gases And Pneumatics
    1. Pressure of Gases And Pneumatics
      27 views
      2. Boyles law
    2. Boyles law
      5703 views
      3. Applications of Compressed Air
    3. Applications of Compressed Air
      17 views
      4. Aerosols
    4. Aerosols
      16 views
      8.4: Atmosphere Pressure (Practice Test)
      Pressure and Standard Atmospheric Pressure
    1. Pressure and Standard Atmospheric Pressure
      10827 views
      2. Change In Atmospheric Pressure With Altitude
    2. Change In Atmospheric Pressure With Altitude

    Chapter 9 Scientists Must Measure (11 videos) (Practice Test)

      9.1: Physical Quantities (Practice Test)
      Physical Quantities
    1. Physical Quantities
      56493 views
      2. International Systems of Base Units
    2. International Systems of Base Units
      29680 views
      3. System International Units for Volume
    3. System International Units for Volume
      16 views
      4. Standard of Length-Meter
    4. Standard of Length-Meter
      6721 views
      5. Standard of Mass-Kilogram
    5. Standard of Mass-Kilogram
      4359 views
      6. Standard of Time-Second
    6. Standard of Time-Second
      5294 views
      7. Introduction to Prefixes
    7. Introduction to Prefixes
      10268 views
      8. Interconversion of Units
    8. Interconversion of Units
      597 views
      9.2: Measuring Instruments (Practice Test)
      Measuring with Meter Rule and Measuring Tape
    1. Measuring with Meter Rule and Measuring Tape
      5195 views
      2. Measuring Volume by Cylinder
    2. Measuring Volume by Cylinder
      3068 views
      3. Some Measuring Instruments
    3. Some Measuring Instruments
      15 views

    Chapter 10 Heat and its Effects (9 videos) (Practice Test)

      10.1: Sources of Heat (Practice Test)
      Heat
    1. Heat
      420 views
      2. Sources of Heat
    2. Sources of Heat
      1127 views
      10.2: Thermal Expansion of Solids (Practice Test)
      Expansions of Solids
    1. Expansions of Solids
      39 views
      2. Application of Thermal Expansion
    2. Application of Thermal Expansion
      6150 views
      10.3: Thermal Expansion of Gases (Practice Test)
      Expansion of Gases
    1. Expansion of Gases
      534 views
      10.4: Thermal Expansion of Liquids (Practice Test)
      Expansion of Liquids
    1. Expansion of Liquids
      1003 views
      2. Anomalous Expansion of Water
    2. Anomalous Expansion of Water
      383 views
      10.5: Thermometer and its Working (Practice Test)
      Thermometer
    1. Thermometer
      42 views
      2. Temperature Scales
    2. Temperature Scales
      32 views

    Chapter 11 Lenses (11 videos) (Practice Test)

      11.1: Lenses (Practice Test)
      Lens Terminologies
    1. Lens Terminologies
      2291 views
      2. Types of Lenses
    2. Types of Lenses
      7161 views
      11.2: Image Formation by Lenses (Practice Test)
      Convergence and Divergence of Lenses
    1. Convergence and Divergence of Lenses
      1892 views
      2. Image Formed by Convex Lens
    2. Image Formed by Convex Lens
      5588 views
      3. Image Formation by Concave Lens
    3. Image Formation by Concave Lens
      4126 views
      11.3: Image Formation in Camera and Human Eye (Practice Test)
      Introducing Camera
    1. Introducing Camera
      3195 views
      2. Human Eye
    2. Human Eye
      5327 views
      11.4: How Eyes Get Used to Darkness After Some Time (Practice Test)
      Adjustment of Eyes To Darkness
    1. Adjustment of Eyes To Darkness
      21 views
      11.5: Defects of Human Eye (Practice Test)
      Shortsightedness
    1. Shortsightedness
      3128 views
      2. Farsightedness
    2. Farsightedness
      2534 views
      11.6: Uses of Lenses (Practice Test)
      Uses of Lenses
    1. Uses of Lenses
      31 views

    Chapter 12 Electricity in Action (14 videos) (Practice Test)

      12.1: Generating Electricity (Practice Test)
      Introduction to Electric Current
    1. Introduction to Electric Current
      8793 views
      2. Introduction to Electromagnetic Induction
    2. Introduction to Electromagnetic Induction
      7931 views
      3. Alternating Current (AC) Generator
    3. Alternating Current (AC) Generator
      4. Bicycle Dynamo and its Working
    4. Bicycle Dynamo and its Working
      12.2: Power Stations (Practice Test)
      Power Station and its Working
    1. Power Station and its Working
      2. Hydroelectric and Wind Power Station
    2. Hydroelectric and Wind Power Station
      3. Thermal Power Plant
    3. Thermal Power Plant
      36 views
      4. Introduction to Fossil Fuels
    4. Introduction to Fossil Fuels
      5. Wind Power Plant
    5. Wind Power Plant
      26 views
      6. Nuclear Power Plant
    6. Nuclear Power Plant
      50 views
      7. Solar Energy
    7. Solar Energy
      3171 views
      12.3: Problems Involved in Generating Electricity (Practice Test)
      Problems Involved In Generating Electricity
    1. Problems Involved In Generating Electricity
      212 views
      12.4: An Electronic System (Practice Test)
      Transmission and Reception of Information
    1. Transmission and Reception of Information
      1060 views
      12.5: Use of Various Electronic Devices (Practice Test)
      I/O Hardware: Input Output Devices
    1. I/O Hardware: Input Output Devices
      1921 views

    Chapter 13 Exploring Space (16 videos)

      13.1: The Universe (Practice Test)
      Universe and Space
    1. Universe and Space
      1351 views
      2. What is Beyond Our Solar System?
    2. What is Beyond Our Solar System?
      279 views
      13.2: Tools and Techniques for Space Exploration (Practice Test)
      Telescope
    1. Telescope
      50 views
      2. Refracting Telescope
    2. Refracting Telescope
      3. Radio And Broad-Spectrum Telescopes
    3. Radio And Broad-Spectrum Telescopes
      4. Spectroscopes
    4. Spectroscopes
      48 views
      5. Spacecrafts And Their Types
    5. Spacecrafts And Their Types
      31 views
      6. Space Probes
    6. Space Probes
      17 views
      7. Space Stations
    7. Space Stations
      22 views
      8. Space Shuttle
    8. Space Shuttle
      42 views
      13.3: Benefits of Technologies of Space Exploration
      Benefits of Space Exploration
    1. Benefits of Space Exploration
      29 views
      2. More Benefits of Space Exploration
    2. More Benefits of Space Exploration
      17 views
      13.4: Survival in Space
      Survival And Research In Space
    1. Survival And Research In Space
      20 views
      13.5: Problems from Space Exploration and Solution
      Survival And Research In Space
    1. Survival And Research In Space
      20 views
      13.6: Technologies on Earth from Space Exploration
      Benefits of Space Exploration
    1. Benefits of Space Exploration
      29 views
      2. More Benefits of Space Exploration
    2. More Benefits of Space Exploration
      17 views