General Science | Class 8

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    Chapter 1 Human Organ System ( 16 videos)  (Practice Test)

      1.1: Nervous System (Central And Peripheral) (Practice Test)
      Nervous System
    1. Nervous System
      455 views
      2. Neuron
    2. Neuron
      639 views
      3. Neuron Types
    3. Neuron Types
      10302 views
      4. Human Nervous System (Brain)
    4. Human Nervous System (Brain)
      396 views
      5. Brain
    5. Brain
      714 views
      6. Peripheral Nervous System (PNS)
    6. Peripheral Nervous System (PNS)
      6602 views
      7. Working Model of The Nervous System
    7. Working Model of The Nervous System
      110 views
      1.2: Reflex Action (Practice Test)
      Reflex Action
    1. Reflex Action
      10745 views
      2. Actions Controlled By The Nervous System
    2. Actions Controlled By The Nervous System
      33 views
      1.3: Excretory System: Structure Of Kidney And Its Role In Excretion (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
      1.4: Kidney Malfunction (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 2 Heredity in Organisms ( 8 videos)  (Practice Test)

      2.1: Cell Division (Practice Test)
      Cell Cycle
    1. Cell Cycle
      20785 views
      2. Mitosis, Prophase
    2. Mitosis, Prophase
      30609 views
      3. Metaphase I, Anaphase I and Telophase I
    3. Metaphase I, Anaphase I and Telophase I
      15853 views
      4. Difference Between Mitosis And Meiosis
    4. Difference Between Mitosis And Meiosis
      152 views
      2.2: Basis of Heredity (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
      2.3: Heredity (Practice Test)
      Heredity
    1. Heredity
      2.4: Transmission of Characteristics (Practice Test)
      Transmission of Characters (Inheritable And Non-inheritable Characters)
    1. Transmission of Characters (Inheritable And Non-inheritable Characters)
      29 views

    Chapter 3 Biotechnology ( 10 videos)  (Practice Test)

      3.1: DNA Replication (Practice Test)
      Introduction To Biotechnology
    1. Introduction To Biotechnology
      202 views
      2. Genetic Engineering
    2. Genetic Engineering
      190 views
      3. Concept of Gene
    3. Concept of Gene
      14952 views
      3.2: Introduction of Gene into Bacterium (Practice Test)
      Genetic Engineering
    1. Genetic Engineering
      190 views
      2. Introduction of Genes Into Bacterium
    2. Introduction of Genes Into Bacterium
      120 views
      3.3: Genetic Modifications (Practice Test)
      Genetic Modifications
    1. Genetic Modifications
      89 views
      3.4: Biotechnology Product Saving Lives (Insulin, Vaccines) (Practice Test)
      Production of Insulin From Genetically Modified Bacterium
    1. Production of Insulin From Genetically Modified Bacterium
      198 views
      2. Production of Vaccines From Genetically Modified Bacterium
    2. Production of Vaccines From Genetically Modified Bacterium
      28 views
      3.5: General Applications (Agriculture, Environment, Health, Food Production And Preservation) (Practice Test)
      Role of Biotechnology In Agriculture, Food Production And Preservation
    1. Role of Biotechnology In Agriculture, Food Production And Preservation
      135 views
      2. Role of Biotechnology In Health And Environment
    2. Role of Biotechnology In Health And Environment
      127 views

    Chapter 4 Pollutants and Their Effects on Environment ( 15 videos)  (Practice Test)

      4.1: Pollutants, Their Sources And Harmful Effects On Human Organ Systems (Practice Test)
      Introduction to Pollution
    1. Introduction to Pollution
      492 views
      2. Sources of Air Pollutants
    2. Sources of Air Pollutants
      2311 views
      3. Carbon Monoxide as Pollutant
    3. Carbon Monoxide as Pollutant
      3165 views
      4. Pollutants of Sulphur Compound
    4. Pollutants of Sulphur Compound
      1880 views
      5. Ground Level Ozone And Heavy Metals As Air Pollutants
    5. Ground Level Ozone And Heavy Metals As Air Pollutants
      6. Harmful Effects of Air Pollutants
    6. Harmful Effects of Air Pollutants
      33 views
      4.2: Effects of Human Activities on Environment (Practice Test)
      Acid Rain
    1. Acid Rain
      6450 views
      2. Green House Effect
    2. Green House Effect
      5647 views
      3. Depletion of Ozone
    3. Depletion of Ozone
      6088 views
      4. Global Warming
    4. Global Warming
      4039 views
      5. Deforestation
    5. Deforestation
      32 views
      6. Lack of Natural Resources
    6. Lack of Natural Resources
      16 views
      4.3: Saving the Earth (Practice Test)
      Solid Waste Management
    1. Solid Waste Management
      39 views
      2. Ways of savings Ours Surroundings
    2. Ways of savings Ours Surroundings
      88 views
      3. The Environment and The 3R's
    3. The Environment and The 3R's

    Chapter 5 Chemical Reactions ( 12 videos)  (Practice Test)

      5.1: Chemical Reactions (Practice Test)
      Introduction To Chemical Reactions
    1. Introduction To Chemical Reactions
      2. Chemical Equation and Writing of Chemical Equation
    2. Chemical Equation and Writing of Chemical Equation
      1466 views
      5.2: Applications of Chemical Reactions (Practice Test)
      Applications of Chemical Reactions
    1. Applications of Chemical Reactions
      50 views
      5.3: Chemical Equations 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
      3. Reactions of the Alkali Metals
    3. Reactions of the Alkali Metals
      262 views
      5.4: Law of Conservation of Mass (Practice Test)
      Law of Conservation of Mass
    1. Law of Conservation of Mass
      7997 views
      5.5: 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
      5.6: Energy Changes in Chemical Reactions (Practice Test)
      Exothermic Reactions
    1. Exothermic Reactions
      3735 views
      2. Using Exothermic Reactions to Warm Food
    2. Using Exothermic Reactions to Warm Food
      1096 views
      3. Endothermic Reactions
    3. Endothermic Reactions
      2179 views

    Chapter 6 Acids, Alkalis and Salts ( 22 videos)  (Practice Test)

      6.1: Introduction To Acids, Alkalis and Salts (Practice Test)
      Acids And Their Common Sources
    1. Acids And Their Common Sources
      658 views
      2. Alkalis
    2. Alkalis
      680 views
      3. Bases
    3. Bases
      117 views
      4. Concept of Salts
    4. Concept of Salts
      4385 views
      6.2: Properties Of Acids, Alkalis And Salts (Practice Test)
      Concept of Acids
    1. Concept of Acids
      9746 views
      2. Reaction of Acids with Metals
    2. Reaction of Acids with Metals
      6379 views
      3. Copncept of Bases
    3. Copncept of Bases
      5662 views
      4. Reaction of Bases with Ammonium Salts
    4. Reaction of Bases with Ammonium Salts
      1313 views
      5. Properties of Salts
    5. Properties of Salts
      2379 views
      6.3: Uses Of Acids, Alkalis And Salts (Practice Test)
      Uses of Hydrochloric Acid
    1. Uses of Hydrochloric Acid
      1743 views
      2. Uses of Nitric Acids
    2. Uses of Nitric Acids
      2215 views
      3. Uses of Sulphuric Acid
    3. Uses of Sulphuric Acid
      2262 views
      4. Uses of Acids
    4. Uses of Acids
      2493 views
      5. Uses of Alkalis
    5. Uses of Alkalis
      463 views
      6. Uses of Bases
    6. Uses of Bases
      1646 views
      7. Uses of Calcium Hydroxide
    7. Uses of Calcium Hydroxide
      8. Uses of Salts
    8. Uses of Salts
      3798 views
      6.4: pH And Its Range In Aqueous Medium (Practice Test)
      pH Scale
    1. pH Scale
      9484 views
      2. Measuring of pH by pH Meter
    2. Measuring of pH by pH Meter
      1560 views
      6.5: Indicators and their Uses (Practice Test)
      Indicators
    1. Indicators
      3980 views
      2. Universal Indicator
    2. Universal Indicator
      2293 views
      3. Natural Indicators
    3. Natural Indicators
      442 views

    Chapter 7 Force and Pressure ( 14 videos)  (Practice Test)

      7.1: Pressure, Force and Area (Practice Test)
      Pressure and Standard Atmospheric Pressure
    1. Pressure and Standard Atmospheric Pressure
      10827 views
      7.2: Units Of Pressure (Practice Test)
      Introduction to Pressure
    1. Introduction to Pressure
      4202 views
      7.3: Water Pressure (Practice Test)
      Pressure in Liquids
    1. Pressure in Liquids
      5855 views
      2. Buoyancy And Density Responsible For Sinking or Floating
    2. Buoyancy And Density Responsible For Sinking or Floating
      7.4: Hydraulics And Hydraulic Systems- Pascal's Law (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
      7.5: Gas Pressure in a Closed Container (Practice Test)
      Applications of Compressed Air
    1. Applications of Compressed Air
      17 views
      7.6: Pneumatics (Practice Test)
      Pressure of Gases And Pneumatics
    1. Pressure of Gases And Pneumatics
      27 views
      2. Aerosols
    2. Aerosols
      16 views
      7.7: Atmospheric Pressure (Practice Test)
      Pressure and Standard Atmospheric Pressure
    1. Pressure and Standard Atmospheric Pressure
      10827 views
      2. Investigate Effects Related To Pressure
    2. Investigate Effects Related To Pressure
      3. Change In Atmospheric Pressure With Altitude
    3. Change In Atmospheric Pressure With Altitude

    Chapter 8 Measurement of Physical Quantities ( 6 videos)  (Practice Test)

      8.1: Physical Quantities (Practice Test)
      Physical Quantities
    1. Physical Quantities
      56493 views
      8.2: System International Units (Practice Test)
      International Systems of Base Units
    1. International Systems of Base Units
      29680 views
      2. System International Units for Volume
    2. System International Units for Volume
      16 views
      8.3: Instruments For Measurements (Practice Test)
      Standard of Length-Meter
    1. Standard of Length-Meter
      6721 views
      2. Measuring Volume by Cylinder
    2. Measuring Volume by Cylinder
      3068 views
      3. Some Measuring Instruments
    3. Some Measuring Instruments
      15 views

    Chapter 9 Sources And Effects of Heat Energy ( 13 videos)  (Practice Test)

      9.1: Sources And Effects of Heat (Practice Test)
      Heat
    1. Heat
      420 views
      2. Sources of Heat
    2. Sources of Heat
      1127 views
      9.2: Thermal Expansion and Contraction (Solids, Liquids, And Gases) (Practice Test)
      Expansions of Solids
    1. Expansions of Solids
      39 views
      2. Expansion of Liquids
    2. Expansion of Liquids
      1003 views
      3. Expansion of Gases
    3. Expansion of Gases
      534 views
      9.3: The Peculiar Behaviour of Expansion And Contraction of Water (Practice Test)
      Anomalous Expansion of Water
    1. Anomalous Expansion of Water
      383 views
      9.4: Applications of Expansion and Contraction 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
      9.5: Effects Of Expansion And Contraction Of Solids In Everyday Life (Practice Test)
      Expansions of Solids
    1. Expansions of Solids
      39 views
      2. Application of Thermal Expansion
    2. Application of Thermal Expansion
      6150 views
      9.6: Uses of Expansion and Contraction of Liquids (Practice Test)
      Expansion of Liquids
    1. Expansion of Liquids
      1003 views
      9.7: Thermometer (Practice Test)
      Thermometer
    1. Thermometer
      42 views

    Chapter 10 Lenses ( 13 videos)  (Practice Test)

      10.1: Lenses (Practice Test)
      Lens Terminologies
    1. Lens Terminologies
      2291 views
      10.2: Types of Lenses (Converging And Diverging Lenses) (Practice Test)
      Types of Lenses
    1. Types of Lenses
      7161 views
      10.3: Image Formation By Ray Diagram (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
      10.4: Image Formation In Simple Camera And Human Eye (Practice Test)
      Introducing Camera
    1. Introducing Camera
      3195 views
      2. Eye
    2. Eye
      7259 views
      3. More on Eye
    3. More on Eye
      4034 views
      4. Human Eye
    4. Human Eye
      5327 views
      10.5: Uses of Lenses (Practice Test)
      Farsightedness
    1. Farsightedness
      2534 views
      2. Shortsightedness
    2. Shortsightedness
      3128 views
      3. Adjustment of Eyes To Darkness
    3. Adjustment of Eyes To Darkness
      21 views
      4. Uses of Lenses
    4. Uses of Lenses
      31 views

    Chapter 11 Electricity In Action ( 20 videos)  (Practice Test)

      11.1: 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
      11.2: 1Electricity Generator Model (Practice Test)
      Introduction to Electromagnetic Induction
    1. Introduction to Electromagnetic Induction
      7931 views
      11.3: Portable Generator (Bicycle Dynamo) (Practice Test)
      Bicycle Dynamo and its Working
    1. Bicycle Dynamo and its Working
      11.4: Working Of Power Station (Practice Test)
      Power Station and its Working
    1. Power Station and its Working
      11.5: Other Sources Of Electricity (Practice Test)
      Solar Energy
    1. Solar Energy
      3171 views
      2. Wind Power Plant
    2. Wind Power Plant
      26 views
      3. Nuclear and Gravitational Energy
    3. Nuclear and Gravitational Energy
      171 views
      4. Role of Microbes in Energy Generation
    4. Role of Microbes in Energy Generation
      5. Hydroelectric and Wind Power Station
    5. Hydroelectric and Wind Power Station
      6. Thermal Power Plant
    6. Thermal Power Plant
      36 views
      11.6: Problems Of Generating Electricity (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
      11.7: Introduction To Electronic Systems (Practice Test)
      Transmission and Reception of Information
    1. Transmission and Reception of Information
      1060 views
      2. I/O Hardware: Input Output Devices
    2. I/O Hardware: Input Output Devices
      1921 views
      3. Resistance
    3. Resistance
      78 views
      4. Semiconductor Diode
    4. Semiconductor Diode
      1747 views
      5. Transistors
    5. Transistors
      9325 views
      11.8: Uses Of Components (Input, Processor, Output) (Practice Test)
      What is Computer?
    1. What is Computer?
      7223 views
      2. I/O Hardware: Input Output Devices
    2. I/O Hardware: Input Output Devices
      1921 views

    Chapter 12 Exploring Space ( 12 videos)  (Practice Test)

      12.1: Telescope, Spectroscope And Spacecraft (Practice Test)
      Telescope
    1. Telescope
      50 views
      2. Refracting Telescope
    2. Refracting Telescope
      3. Reflecting Telescope
    3. Reflecting Telescope
      261 views
      4. Spectroscopes
    4. Spectroscopes
      48 views
      5. Spacecrafts And Their Types
    5. Spacecrafts And Their Types
      31 views
      6. Space Stations
    6. Space Stations
      22 views
      7. Space Probes
    7. Space Probes
      17 views
      8. Space Shuttle
    8. Space Shuttle
      42 views
      12.2: Space Exploration (Practice Test)
      Space Exploration
    1. Space Exploration
      2. Benefits of Space Exploration
    2. Benefits of Space Exploration
      29 views
      3. More Benefits of Space Exploration
    3. More Benefits of Space Exploration
      17 views
      4. Survival And Research In Space
    4. Survival And Research In Space
      20 views