8th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 10

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. SI unit of temperature is

    (a)

    celsius

    (b)

    fahrenheit

    (c)

    kelvin

    (d)

    ampere

  2. Electric current (I) = ____________

    (a)

    Qt

    (b)

    t/Q

    (c)

    Q/t

    (d)

    Q/t2

  3. The distance from the pole to the focus is called

    (a)

    Pole length

    (b)

    focal length

    (c)

    principal axis

    (d)

    None of the above

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

    (a)

    Convex mirror

    (b)

    Concave mirror

    (c)

    Plane mirror

    (d)

    ellipsoid mirror

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

    (a)

    ductility

    (b)

    malleability

    (c)

    conductivity

    (d)

    tensile strength

  6. 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

  7. Which of the following factor induces electrolysis?

    (a)

    Heat

    (b)

    light

    (c)

    electricity

    (d)

    catalysis

  8. __________is an example for Lophotrichous

    (a)

    vibrio

    (b)

    Pseudomonas

    (c)

    Rhodospirillum

    (d)

    Corny bacterium

  9. _________ is an example for colonial form of algae.

    (a)

    Oscillatoria

    (b)

    Nostac

    (c)

    Volvox

    (d)

    Chlorella

  10. The erythrocyte is placed in _________ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

    (a)

    Hypotonic

    (b)

    Hypertonic

    (c)

    Neutral

    (d)

    Acidic

  11. _________are called as building blocks of life

    (a)

    Cells

    (b)

    nucleus

    (c)

    Cell organelles

    (d)

    tissues

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

    (a)

    sublimation

    (b)

    condensation

    (c)

    freezing

    (d)

    deposition

  13. Which of the following is known as azote?

    (a)

    Oxygen

    (b)

    Nitrogen

    (c)

    Sulpher

    (d)

    Carbon dioxide

  14. Why do underwater divers wear fin-like flippers on their feet ?

    (a)

    To swim easily in water

    (b)

    To look like a fish.

    (c)

    To walk on water surface

    (d)

    To walk over the bottom of the sea (sea bed).

  15. Androgen production is regulated by ___________

    (a)

    GH hormone

    (b)

    LH hormone

    (c)

    TSH hormone

    (d)

    ACTH hormone

  16. Noise is produced by

    (a)

    vibrations with high frequency.

    (b)

    regular vibrations.

    (c)

    regular and periodic vibrations.

    (d)

    irregular and non-periodic vibrations.

  17. Cryogenic fuels are stored at

    (a)

    room temperature

    (b)

    low temperature

    (c)

    very low temperature

    (d)

    very high temperature

  18. Magnesium hydroxides are used for treating_______

    (a)

    acidity

    (b)

    head pain

    (c)

    teeth decay

    (d)

    None of these

  19. Which of the following is not present in Panchagavya?

    (a)

    Cow dung

    (b)

    Cow’s urine

    (c)

    Curd

    (d)

    Sugar

  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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