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

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. Which one the following system of units is the British System of unit?

    (a)

    CGS

    (b)

    MKS

    (c)

    FPS

    (d)

    SI

  2. Unit of pressure is

    (a)

    pascal

    (b)

    N m–2

    (c)

    poise

    (d)

    Both (a) & (b)

  3. The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

    (a)

    centre of curvature

    (b)

    pole

    (c)

    principal axis

    (d)

    radius curvature

  4. Symbol of Mercury is

    (a)

    Ag

    (b)

    Hg

    (c)

    Au

    (d)

    Pb

  5. Brine is a concentrated solution of ______.

    (a)

    Sodium sulphate

    (b)

    sodium chloride

    (c)

    calcium chloride

    (d)

    sodium bromide

  6. Micro organisms are measured in ______.

    (a)

    cm

    (b)

    mm

    (c)

    micron

    (d)

    meter

  7. _________is a ball-shaped bacteria.

    (a)

    Bacilli

    (b)

    Spinilla

    (c)

    Cocci

    (d)

    Vibrio

  8. Floridian starch is a reserve food material of _______

    (a)

    Chloroplyceae

    (b)

    Phaeophyceae

    (c)

    Rhodophyceae

    (d)

    Cyanophyceae

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

    (a)

    Inhalation

    (b)

    Exhalation

    (c)

    Breathing

    (d)

    None of these

  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. Aerated water contains

    (a)

    air

    (b)

    oxygen

    (c)

    carbon dioxide

    (d)

    nitrogen

  13. In all atoms of an element

    (a)

    the atomic and the mass number are same.

    (b)

    the mass number is same and the atomic number is different

    (c)

    the atomic number is same and the mass number is different

    (d)

    both atomic and mass numbers may vary.

  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. Sound waves travel very fast in

    (a)

    air

    (b)

    metals

    (c)

    vacuum

    (d)

    liquids

  16. The shape of the Earth’s magnetic field resembles that of an imaginary __________.

    (a)

    U-shaped magnet

    (b)

    straight conductor carrying current

    (c)

    solenoid coil

    (d)

    bar magnet

  17. The gas collected at the cathode on electrolysis of water is

    (a)

    oxygen

    (b)

    hydrogen

    (c)

    nitrogen

    (d)

    carbon dioxide

  18. Magnesium hydroxides are used for treating_______

    (a)

    acidity

    (b)

    head pain

    (c)

    teeth decay

    (d)

    None of these

  19. The main component of natural gas is __________

    (a)

    methane

    (b)

    ethane

    (c)

    propane

    (d)

    butane

  20. Deforestation means ______

    (a)

    cleaning of forest

    (b)

    to grow plants

    (c)

    to look after plants

    (d)

    None of these.

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