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

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. Closeness of two or more measured values is called as

    (a)

    accuracy

    (b)

    precision

    (c)

    error

    (d)

    approximation

  2. Which of the following liquids has more viscosity?

    (a)

    Grease

    (b)

    Water

    (c)

    Coconut oil

    (d)

    Ghee

  3. If the image and object distance is same, then the object is placed at

    (a)

    infinity

    (b)

    at F

    (c)

    between f and P

    (d)

    at C

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

    (a)

    imaginary line

    (b)

    curved line

    (c)

    Perpendicular line

    (d)

    normal

  5. The property which allows metals to be hammered into their sheets is ___________

    (a)

    ductility

    (b)

    malleability

    (c)

    conductivity

    (d)

    tensile strength

  6. Brine is a concentrated solution of ______.

    (a)

    Sodium sulphate

    (b)

    sodium chloride

    (c)

    calcium chloride

    (d)

    sodium bromide

  7. __________is an example for Lophotrichous

    (a)

    vibrio

    (b)

    Pseudomonas

    (c)

    Rhodospirillum

    (d)

    Corny bacterium

  8. Floridian starch is a reserve food material of _______

    (a)

    Chloroplyceae

    (b)

    Phaeophyceae

    (c)

    Rhodophyceae

    (d)

    Cyanophyceae

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

    (a)

    1970

    (b)

    1975

    (c)

    1978

    (d)

    1623

  10. Pen drive is _____device.

    (a)

    Output

    (b)

    Input

    (c)

    Storage

    (d)

    Connecting cable

  11. The process of converting a liquid into a solid is called_________.

    (a)

    sublimation

    (b)

    condensation

    (c)

    freezing

    (d)

    deposition

  12. Solvay process is a method to manufacture

    (a)

    lime water

    (b)

    aerated water

    (c)

    distilled water

    (d)

    sodium carbonate

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

    (a)

    Dog

    (b)

    Snail

    (c)

    Earthworm

    (d)

    Human being

  14. 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

  15. What is the short cut key for undo option?

    (a)

    Ctrl + Z

    (b)

    Ctrl + R

    (c)

    Ctrl + Y

    (d)

    Ctrl + N

  16. The range of audible frequency for the human ear is

    (a)

    2 Hz to 2000 Hz

    (b)

    20 Hz to 2000 Hz

    (c)

    20 Hz to 20000 Hz

    (d)

    200 Hz to 20000 Hz

  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. Sodium hydroxide is a ____________

    (a)

    acid

    (b)

    base

    (c)

    oxide

    (d)

    alkali

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

    (a)

    bio-pesticides

    (b)

    bio-fertilizers

    (c)

    earthworms

    (d)

    neem leaves

  20. How many types of page orientation are there in Libre office Writer?

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    4

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