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

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. Normal temperature of the human body is between

    (a)

    98.4°Fand 99.6°F

    (b)

    98.40Fand 98.60F

    (c)

    97.4°Fand 98.6°F

    (d)

    97.6°Fand 99.60F

  2. Rain drops are spherical in nature because of _________

    (a)

    Frictional force

    (b)

    Buoyant force

    (c)

    Surface tension

    (d)

    Viscous force

  3. Mirrors which magnify the object placed close to them.

    (a)

    Convex mirror

    (b)

    Concave mirror

    (c)

    Plane mirror

    (d)

    ellipsoid mirror

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

    (a)

    Americium

    (b)

    Mercury

    (c)

    Nobelium

    (d)

    Neptunium_

  5. Decomposition of limestone is an example for chemical reaction based on __________

    (a)

    contact

    (b)

    electricity

    (c)

    light

    (d)

    heat

  6. Yeast reproduces by __________

    (a)

    Fragmentation

    (b)

    Budding

    (c)

    Sporulation

    (d)

    Sexual method

  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. Adam’s apple is the growth of the ________

    (a)

    pharynx

    (b)

    thyroid

    (c)

    larynx

    (d)

    parathyroid

  11. Tux paint software is used to ________.

    (a)

    paint

    (b)

    program

    (c)

    scan

    (d)

    PDF

  12. The amplitude of the sound wave decides its

    (a)

    speed

    (b)

    pitch

    (c)

    loudness

    (d)

    frequency

  13. One of the following is an example of a permanent magnet.

    (a)

    Electromagnet

    (b)

    Mumetal

    (c)

    Soft iron

    (d)

    Neodymium

  14. Mangalyaan was sent to ________

    (a)

    Moon

    (b)

    Mars

    (c)

    Venus

    (d)

    Mercury

  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. Sodium hydroxide is a ____________

    (a)

    acid

    (b)

    base

    (c)

    oxide

    (d)

    alkali

  17. __________ is the coal of superior quality.

    (a)

    Peat

    (b)

    Lignite

    (c)

    Bituminous

    (d)

    Anthracite

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

    (a)

    bio-pesticides

    (b)

    bio-fertilizers

    (c)

    earthworms

    (d)

    neem leaves

  19. Deforestation means ______

    (a)

    cleaning of forest

    (b)

    to grow plants

    (c)

    to look after plants

    (d)

    None of these.

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

    (a)

    Ctrl + C

    (b)

    Ctrl + V

    (c)

    Ctrl + X

    (d)

    Ctrl + A

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