8th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 3

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. _______ can be used as memory or storage element in the computers.

    (a)

    Condutors

    (b)

    Insulators

    (c)

    Supercondutors

    (d)

    Semiconductors

  2. Rain drops are spherical in nature because of _________

    (a)

    Frictional force

    (b)

    Buoyant force

    (c)

    Surface tension

    (d)

    Viscous force

  3. An imaginary line perpendicular to the reflecting surface is called

    (a)

    imaginary line

    (b)

    curved line

    (c)

    Perpendicular line

    (d)

    normal

  4. Which of the following element is named after a scientist?

    (a)

    Americium

    (b)

    Mercury

    (c)

    Nobelium

    (d)

    Neptunium_

  5. Enzymes and yeasts are called

    (a)

    catalysts

    (b)

    bio catalysts

    (c)

    chemical catalysts

    (d)

    physical catalysts

  6. __________is an example for Lophotrichous

    (a)

    vibrio

    (b)

    Pseudomonas

    (c)

    Rhodospirillum

    (d)

    Corny bacterium

  7. _____ is the giant kelp

    (a)

    Spirogyra

    (b)

    Volvox

    (c)

    Macrocystis

    (d)

    Chlorella

  8. _________are called as building blocks of life

    (a)

    Cells

    (b)

    nucleus

    (c)

    Cell organelles

    (d)

    tissues

  9. When was the first computer introduced?

    (a)

    1980

    (b)

    1947

    (c)

    1946

    (d)

    1985

  10. ___________ are the chemical substances, secreted by endocrine glands.

    (a)

    Hormones

    (b)

    Enzymes

    (c)

    Proteins

    (d)

    Fatty acids

  11. Tux paint software is used to ________.

    (a)

    paint

    (b)

    program

    (c)

    scan

    (d)

    PDF

  12. Find the odd one out.

    (a)

    Harmonium

    (b)

    Flute

    (c)

    Nadaswaram

    (d)

    Violin

  13. A magnet attracts __________.

    (a)

    wooden materials

    (b)

    any metal

    (c)

    copper

    (d)

    iron and steel

  14. ________ is called as Red planet.

    (a)

    Mercury

    (b)

    Venus

    (c)

    Earth

    (d)

    Mars

  15. 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

  16. The base is a substance that gives _____ on dissolving in water.

    (a)

    OH-

    (b)

    H+

    (c)

    OH

    (d)

    H

  17. Which is known as syn gas?

    (a)

    Marsh gas

    (b)

    Water gas

    (c)

    Producer gas

    (d)

    Coal gas

  18. The process of placing seeds in the soil is called

    (a)

    ploughing

    (b)

    sowing

    (c)

    crop production

    (d)

    crop rotation

  19. Deforestation means ______

    (a)

    cleaning of forest

    (b)

    to grow plants

    (c)

    to look after plants

    (d)

    None of these.

  20. If the ruler is not displayed in the screen, __________ option is clicked.

    (a)

    View -> ruler

    (b)

    View -> task

    (c)

    File -> save

    (d)

    Edit -> paste

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