Madmaths Quiz Science Quiz

45 Questions | Total Attempts: 15

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Madmaths Quiz Science Quiz

Science quiz for class 8


Questions and Answers
  • 1. 
    Fabric is made of
    • A. 

       steel

    • B. 

      Fibre

    • C. 

      Paper

    • D. 

      None of these.

  • 2. 
     The small units used in making synthetic fibres are.
    • A. 

      Molecules

    • B. 

      Polymers

    • C. 

      Cells

    • D. 

       none of these.

  • 3. 
    The strongest fibre is called:
    • A. 

      Rayon

    • B. 

      Nylon

    • C. 

      Acrylic

    • D. 

      None of these.

  • 4. 
    The first man-made fibre is
    • A. 

      Nylon

    • B. 

      Polyester

    • C. 

      Rayon

    • D. 

      Cotton

  • 5. 
    The fibre made up by the chemical treatment of wood pulp is
    • A. 

      Rayon

    • B. 

      Nylon

    • C. 

      Polyester

    • D. 

      None of these.

  • 6. 
    The raw materials used in making nylon
    • A. 

      Wood pulp

    • B. 

      Cellulose

    • C. 

      Coal, water, air

    • D. 

      All of these

  • 7. 
    What are some advantages of synthetic materials?
    • A. 

      Cheaper to manufacture 

    • B. 

      Stronger than similar products made from natural material

    • C. 

      Often better quality 

    • D. 

      All of the above

  • 8. 
    It is not advisable to wear clothes made of synthetic fibre while working near fire because 
    • A. 

      They are uncomfortable in those works

    • B. 

      They melt on heating and cause heavy burns

    • C. 

      They do not absorb moisture

    • D. 

      They are shiny and lustrous.

  • 9. 
    Melamine is used for making
    • A. 

      Kitchenware.

    • B. 

      Floor tiles.

    • C. 

      Fire-resistant fabrics.

    • D. 

      All of them.

  • 10. 
    Which of the following material is a mixture of two fibres?
    • A. 

      Jute

    • B. 

      Polywool

    • C. 

      Polyester

    • D. 

      Nylon

  • 11. 
     Identify the synthetic fibre which resembles wool.
    • A. 

      Rayon

    • B. 

      Terylene

    • C. 

      Nylon

    • D. 

      Acrylic

  • 12. 
    Identify the type of plastic that can best be used to make electrical switches.
    • A. 

      PVC

    • B. 

      Polythene

    • C. 

      PET

    • D. 

      Bakelite

  • 13. 
    Terylene is a popular form of
    • A. 

      Polyester

    • B. 

      Monomer

    • C. 

      Plastic

    • D. 

      Nylon

  • 14. 
    A. Cellulose is a polymer that is made up of a large number of small glucose molecules joined one after the other. b. Wood contains a very less amount of cellulose polymer. c. The small molecules that join together to form a polymer are called monomers.
    • A. 

      Only a

    • B. 

      Both a and b

    • C. 

      Only b

    • D. 

      Both b and c

  • 15. 
    Synthetic fibres are synthesised from raw material called
    • A. 

      Petrochemicals.

    • B. 

       Wood pulp.

    • C. 

      Plastics.

    • D. 

       Plants.

  • 16. 
    Which of the following is a rabi crop?
    • A. 

      Mustard

    • B. 

      Paddy

    • C. 

      Maize

    • D. 

      Soyabean

  • 17. 
    Leguminous plants help in the replenishment of the soil with
    • A. 

      Oxygen

    • B. 

      Nitrogen

    • C. 

      Hydrogen

    • D. 

      Phosphorus

  • 18. 
    Before sowing, seeds should be treated with
    • A. 

      Insecticides

    • B. 

      Pesticides

    • C. 

      Fertilisers

    • D. 

      Fungicides

  • 19. 
    Which of the following types of soil needs least frequent irrigation?
    • A. 

      Sandy

    • B. 

      Rocky

    • C. 

      Loamy

    • D. 

      Clayey

  • 20. 
    Chemicals that kill weeds are called
    • A. 

      Fertilisers

    • B. 

      Pesticides

    • C. 

      Weedicides

    • D. 

      Manures

  • 21. 
    Which of the following is not a traditional method of irrigation?
    • A. 

      Drip

    • B. 

      Moat

    • C. 

      Rahat

    • D. 

      Chain pump

  • 22. 
    Which of the following statements is incorrect?
    • A. 

      Loose soil particles have more air spaces

    • B. 

      Loose soil particles hold less water for longer duration

    • C. 

      Loose soil helps roots to penetrate deep through the layers of soil

    • D. 

      Loose soil promotes the growth of useful soil microbes

  • 23. 
    Which of the following is used for removing weeds and for loosening the soil?
    • A. 

      Broadcasting

    • B. 

      Traditional tool

    • C. 

      Seed drill

    • D. 

      Hoe

  • 24. 
    Rearing and large scale production of fish is called
    • A. 

      Horticulture

    • B. 

      Pisciculture

    • C. 

      Animal husbandry

    • D. 

      Apiculture

  • 25. 
    Leaving the agricultural land uncultivated for one or more seasons is known as
    • A. 

      Field fallow

    • B. 

      Manuring

    • C. 

      Crop rotation

    • D. 

      Tilling

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