8th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Two

8th Standard

    Reg.No. :
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Science

Time : 00:20:00 Hrs
Total Marks : 20

    Part A

    20 x 1 = 20
  1. Luminous intensity is the intensity of

    (a)

    Laser light

    (b)

    UV light

    (c)

    visible light

    (d)

    IR light

  2. Rain drops are spherical in nature because of _________

    (a)

    Frictional force

    (b)

    Buoyant force

    (c)

    Surface tension

    (d)

    Viscous force

  3. The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

    (a)

    pole

    (b)

    centre of curvature

    (c)

    cradius of curvature

    (d)

    aperture

  4. When the angle of inclination decreases the number of images formed _________

    (a)

    increase

    (b)

    decreases

    (c)

    remain same

    (d)

    none of the above

  5. Which one of metal possess low tensile strength?

    (a)

    Silver

    (b)

    Copper

    (c)

    Zinc

    (d)

    Aluminium

  6. Brine is a concentrated solution of ______.

    (a)

    Sodium sulphate

    (b)

    sodium chloride

    (c)

    calcium chloride

    (d)

    sodium bromide

  7. _______ shows both living and nonliving characteristics.

    (a)

    Protozoa

    (b)

    virus

    (c)

    bacteria

    (d)

    Fungi

  8. Binominal Nomenclature was first introduced in the year of _______

    (a)

    1970

    (b)

    1975

    (c)

    1978

    (d)

    1623

  9. The process of air passing in and out the lungs is called ___________.

    (a)

    Inhalation

    (b)

    Exhalation

    (c)

    Breathing

    (d)

    None of these

  10. If you apply equal amount of heat to a solid, liquid and gas individually, which of the following will have more expansion?

    (a)

    Solid

    (b)

    Liquid

    (c)

    Gas

    (d)

    All of them

  11. Fuse is

    (a)

    a switch

    (b)

    a wire with low resistance

    (c)

    a wire with high resistance

    (d)

    a protective device for breaking an electric circuit

  12. In water, hydrogen and oxygen are combined in the ratio of _______by mass.

    (a)

    1:8

    (b)

    8:1

    (c)

    2:3

    (d)

    1:3

  13. External ear (pinna )is supported by

    (a)

    bone

    (b)

    cartilage

    (c)

    tendon

    (d)

    capsule

  14. Androgen production is regulated by ___________

    (a)

    GH hormone

    (b)

    LH hormone

    (c)

    TSH hormone

    (d)

    ACTH hormone

  15. In Tux Math, space cadet option is used for_________.

    (a)

    simple addition

    (b)

    division

    (c)

    drawing

    (d)

    multiplication

  16. The shape of the Earth’s magnetic field resembles that of an imaginary __________.

    (a)

    U-shaped magnet

    (b)

    straight conductor carrying current

    (c)

    solenoid coil

    (d)

    bar magnet

  17. Which of the following is the working principle of Rockets?

    (a)

    Newton’s first law

    (b)

    Newton’s second law

    (c)

    Newton’s third law

    (d)

    All the above

  18. Aqueous solutions of _________ conduct electricity.

    (a)

    acid

    (b)

    base

    (c)

    salt

    (d)

    salt and base

  19. __________ is the coal of superior quality.

    (a)

    Peat

    (b)

    Lignite

    (c)

    Bituminous

    (d)

    Anthracite

  20. Deforestation means ______

    (a)

    cleaning of forest

    (b)

    to grow plants

    (c)

    to look after plants

    (d)

    None of these.

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