8th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 4

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. Electric current (I) = ____________

    (a)

    Qt

    (b)

    t/Q

    (c)

    Q/t

    (d)

    Q/t2

  2. When the angle of inclination decreases the number of images formed _________

    (a)

    increase

    (b)

    decreases

    (c)

    remain same

    (d)

    none of the above

  3. The burning of matchstick is an example for chemical reaction based on______

    (a)

    Contact

    (b)

    electricity

    (c)

    light

    (d)

    catalyst

  4. Rusting of iron is a _________ change.

    (a)

    physical

    (b)

    chemical

    (c)

    physical and chemical

    (d)

    neutral

  5. Floridian starch is a reserve food material of _______

    (a)

    Chloroplyceae

    (b)

    Phaeophyceae

    (c)

    Rhodophyceae

    (d)

    Cyanophyceae

  6. _____ is the giant kelp

    (a)

    Spirogyra

    (b)

    Volvox

    (c)

    Macrocystis

    (d)

    Chlorella

  7. The process of air passing in and out the lungs is called ___________.

    (a)

    Inhalation

    (b)

    Exhalation

    (c)

    Breathing

    (d)

    None of these

  8. Pen drive is _____device.

    (a)

    Output

    (b)

    Input

    (c)

    Storage

    (d)

    Connecting cable

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

    (a)

    sublimation

    (b)

    condensation

    (c)

    freezing

    (d)

    deposition

  10. Fuse is

    (a)

    a switch

    (b)

    a wire with low resistance

    (c)

    a wire with high resistance

    (d)

    a protective device for breaking an electric circuit

  11. Cathode rays are made up of

    (a)

    neutral particles

    (b)

    positively charged particles

    (c)

    negatively charged particles

    (d)

    None of the above

  12. 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).

  13. Adam’s apple is the growth of the ________

    (a)

    pharynx

    (b)

    thyroid

    (c)

    larynx

    (d)

    parathyroid

  14. Tux Math software helps in learning the ________

    (a)

    painting

    (b)

    arithmetic

    (c)

    programming

    (d)

    graphics

  15. Find the odd one out.

    (a)

    Harmonium

    (b)

    Flute

    (c)

    Nadaswaram

    (d)

    Violin

  16. MRI stands for __________.

    (a)

    Magnetic Resonance Imaging

    (b)

    Magnetic Running Image

    (c)

    Magnetic Radio Imaging

    (d)

    Magnetic Radar Imaging

  17. Cryogenic fuels are stored at

    (a)

    room temperature

    (b)

    low temperature

    (c)

    very low temperature

    (d)

    very high temperature

  18. In acidic solutions blue litmus changes into ______ colour.

    (a)

    blue

    (b)

    green

    (c)

    red

    (d)

    white

  19. The chemical mixed with LPG that helps in the detection of its leakage is __________

    (a)

    methanol

    (b)

    ethanol

    (c)

    camphor

    (d)

    mercapton

  20. The method in which water flows over the soil surface and allow it to infiltrate is

    (a)

    irrigation

    (b)

    surface irrigation

    (c)

    springler irrigation

    (d)

    drip irrigation

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