8th Standard Science English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021 Part - 9

8th Standard

    Reg.No. :
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Science

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

    Part A

    20 x 1 = 20
  1. __________ is the measure of the perceived power of light.

    (a)

    Luminous flux

    (b)

    Luminous power

    (c)

    Luminous Intensity

    (d)

    Both a and b

  2. Pressure exerted by a liquid is increased by

    (a)

    the density of the liquid

    (b)

    the height of the liquid column

    (c)

    Both (a) & (b)

    (d)

    None of the above

  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. An imaginary line perpendicular to the reflecting surface is called

    (a)

    imaginary line

    (b)

    curved line

    (c)

    Perpendicular line

    (d)

    normal

  5. A form of non-metal which has high ductility is

    (a)

    nitrogen

    (b)

    oxygen

    (c)

    chlorine

    (d)

    carbon

  6. ______ metal undergoes rusting.

    (a)

    tin

    (b)

    sodium

    (c)

    copper

    (d)

    iron

  7. Enzymes and yeasts are called

    (a)

    catalysts

    (b)

    bio catalysts

    (c)

    chemical catalysts

    (d)

    physical catalysts

  8. Based on shape, the bacteria are classified into _______ types.

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    5

  9. ______ is used as a food for domestic animals

    (a)

    Gelidium

    (b)

    Ascophyllum

    (c)

    Laminaria & Ascophyllum

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

    (a)

    Inhalation

    (b)

    Exhalation

    (c)

    Breathing

    (d)

    None of these

  11. Fifth generation computer has ___________ Intelligence.

    (a)

    Transistors

    (b)

    Integrated Circuits

    (c)

    Microprocessor

    (d)

    Artificial Intelligence

  12. Pick out the odd one

    (a)

    Speaker

    (b)

    Printer

    (c)

    Keyboard

    (d)

    Monitor

  13. The electrification of two different bodies on rubbing is because of the transfer of

    (a)

    neutrons

    (b)

    protons

    (c)

    electrons

    (d)

    protons and neutrons

  14. In water, hydrogen and oxygen are combined in the ratio of _______by mass.

    (a)

    1:8

    (b)

    8:1

    (c)

    2:3

    (d)

    1:3

  15. Cockroach moves with the help of its

    (a)

    leg

    (b)

    bone

    (c)

    muscular foot

    (d)

    whole body

  16. Tux paint software is used to ________.

    (a)

    paint

    (b)

    program

    (c)

    scan

    (d)

    PDF

  17. 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

  18. Water changes to ice at

    (a)

    00C

    (b)

    1000C

    (c)

    1020C

    (d)

    980C

  19. We brush our teeth with tooth paste because it is __________ in nature.

    (a)

    basic

    (b)

    acidic

    (c)

    basic and acidic

    (d)

    None of these

  20. Effective microorganism preparation is not used in

    (a)

    seed treatment

    (b)

    foliar spray

    (c)

    soil treatment

    (d)

    bio-predators

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