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

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. __________ is the measure of the perceived power of light.

    (a)

    Luminous flux

    (b)

    Luminous power

    (c)

    Luminous Intensity

    (d)

    Both a and b

  2. __________ form the perfect image of an object

    (a)

    Spherical mirrors

    (b)

    Parabolic mirrors

    (c)

    Plane mirrors

    (d)

    Cylindrical mirrors

  3. Compound obtained from living sources such as plants and animals are called

    (a)

    In Organic Compounds

    (b)

    Organic Compounds

    (c)

    Synthetic Compounds

    (d)

    Artificial Compounds

  4. _________is a ball-shaped bacteria.

    (a)

    Bacilli

    (b)

    Spinilla

    (c)

    Cocci

    (d)

    Vibrio

  5. _____ is the giant kelp

    (a)

    Spirogyra

    (b)

    Volvox

    (c)

    Macrocystis

    (d)

    Chlorella

  6. _________make up organs

    (a)

    Cells

    (b)

    Tissues

    (c)

    Organ system

    (d)

    None of the above

  7. When was the first computer introduced?

    (a)

    1980

    (b)

    1947

    (c)

    1946

    (d)

    1985

  8. Aerated water contains

    (a)

    air

    (b)

    oxygen

    (c)

    carbon dioxide

    (d)

    nitrogen

  9. Cathode rays are made up of

    (a)

    neutral particles

    (b)

    positively charged particles

    (c)

    negatively charged particles

    (d)

    None of the above

  10. Which one of the following organisms lack muscles and skeleton for movement?

    (a)

    Dog

    (b)

    Snail

    (c)

    Earthworm

    (d)

    Human being

  11. Many adolescent boys and girls get pimples on face, due to the secretions of _________ gland.

    (a)

    sweat

    (b)

    sebaceous

    (c)

    sweat and sebaceous

    (d)

    None of these

  12. Which tool bar is used for drawing and editing controls in tux paint software?

    (a)

    Left Side: Toolbar

    (b)

    Right side: Toolbar

    (c)

    Middle: Tool bar

    (d)

    Bottom: Tool bar

  13. What kind of musical instrument is a sitar?

    (a)

    String instrument

    (b)

    Percussion instrument

    (c)

    Wind instrument

    (d)

    None of these

  14. The south pole of a bar magnet and the north pole of a U-shaped magnet will __________.

    (a)

    attract each other

    (b)

    repel each other

    (c)

    neither attract nor repel each other

    (d)

    None of the above

  15. Chandrayaan - 1 was launched on

    (a)

    22nd October 2008

    (b)

    8th November 2008

    (c)

    22nd July 2019

    (d)

    22nd October 2019

  16. Solubility of carbon dioxide in water is high when the

    (a)

    pressure is low

    (b)

    pressure is high

    (c)

    temperature is high

    (d)

    None of the above

  17. In acidic solutions blue litmus changes into ______ colour.

    (a)

    blue

    (b)

    green

    (c)

    red

    (d)

    white

  18. Which is known as syn gas?

    (a)

    Marsh gas

    (b)

    Water gas

    (c)

    Producer gas

    (d)

    Coal gas

  19. Organism that control insects and pests of plant crops is

    (a)

    bio-pesticides

    (b)

    bio-fertilizers

    (c)

    earthworms

    (d)

    neem leaves

  20. The Keyboard shortcut is used to copy the selected text

    (a)

    Ctrl + C

    (b)

    Ctrl + V

    (c)

    Ctrl + X

    (d)

    Ctrl + A

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