8th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 7

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. The unit for surface tension is _________

    (a)

    Nm

    (b)

    N-1m

    (c)

    N-1m-1

    (d)

    Nm-1

  3. The spherical mirror with a reflecting surface curved inward is called

    (a)

    convex mirror

    (b)

    concave mirror

    (c)

    curved mirror

    (d)

    None of the above

  4. The Pictorial symbol for water given by the alchemists was

    (a)

    (b)

    (c)

    (d)

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

    (a)

    Americium

    (b)

    Mercury

    (c)

    Nobelium

    (d)

    Neptunium_

  6. ______ metal undergoes rusting.

    (a)

    tin

    (b)

    sodium

    (c)

    copper

    (d)

    iron

  7. __________ is an acid - loving bacteria

    (a)

    Lactobacillus acidophilus

    (b)

    Pseudomonas

    (c)

    Xanthomonas

    (d)

    Vibrio cholera

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

    (a)

    Oscillatoria

    (b)

    Nostac

    (c)

    Volvox

    (d)

    Chlorella

  9. In the absence of oxygen, glucose is broken down in to ________.

    (a)

    Lactic acid

    (b)

    Citric acid

    (c)

    Acetic acid

    (d)

    Nitric acid

  10. _____is a thin transparent membrane that is spread across the sclera

    (a)

    Cornea

    (b)

    Conjunctiva

    (c)

    Retina

    (d)

    Ciliary body

  11. Pick out the odd one

    (a)

    Speaker

    (b)

    Printer

    (c)

    Keyboard

    (d)

    Monitor

  12. Conduction is the heat transfer which takes place in a____________.

    (a)

    solid

    (b)

    liquid

    (c)

    gas

    (d)

    All of them

  13. Carbon dioxide with water changes

    (a)

    blue litmus to red

    (b)

    red litmus to blue

    (c)

    blue litmus to yellow

    (d)

    doesn’t react with litmus

  14. Which of the following parts of our body help us in movement?
    (i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the options below.

    (a)

    (i) and (iii)

    (b)

    (ii) and (iv)

    (c)

    (i) and (iv)

    (d)

    (i) and (iv)

  15. 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

  16. A magnet attracts __________.

    (a)

    wooden materials

    (b)

    any metal

    (c)

    copper

    (d)

    iron and steel

  17. ________ is called as Red planet.

    (a)

    Mercury

    (b)

    Venus

    (c)

    Earth

    (d)

    Mars

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

    (a)

    OH-

    (b)

    H+

    (c)

    OH

    (d)

    H

  19. __________ is the coal of superior quality.

    (a)

    Peat

    (b)

    Lignite

    (c)

    Bituminous

    (d)

    Anthracite

  20. The plants found in a particular area are known as ________

    (a)

    fauna

    (b)

    flora

    (c)

    endemic

    (d)

    rare

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