Term 1 Model One Marks Questions

8th Standard EM

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Science

Time : 01:00:00 Hrs
Total Marks : 50
    14 x 1 = 14
  1. Which one the following system of units is the British System of unit?

    (a)

    CGS

    (b)

    MKS

    (c)

    FPS

    (d)

    SI

  2. Luminous intensity is the intensity of

    (a)

    Laser light

    (b)

    UV light

    (c)

    visible light

    (d)

    IR light

  3. SI unit stands for

    (a)

    International system of units

    (b)

    Integrated System of units

    (c)

    International symbol of units

    (d)

    Integrated symbol of units

  4. Unit of pressure is

    (a)

    pascal

    (b)

    N m–2

    (c)

    poise

    (d)

    Both (a) & (b)

  5. The unit of viscosity is

    (a)

    N m2

    (b)

    poise

    (c)

    kg m s–1

    (d)

    no unit

  6. The spherical mirror used as a rear view mirror in the vehicle is

    (a)

    concave mirror

    (b)

    convex mirror

    (c)

    plane mirror

    (d)

    None of the above

  7. The refractive index of water is

    (a)

    1.0

    (b)

    1.33

    (c)

    1.44

    (d)

    1.52

  8. Symbol of Mercury is

    (a)

    Ag

    (b)

    Hg

    (c)

    Au

    (d)

    Pb

  9. Pencil lead contains

    (a)

    graphite

    (b)

    diamond

    (c)

    aluminium

    (d)

    sulphur

  10. The pigment responsible for browning of apples is______.

    (a)

    Hydrated iron (II) oxide

    (b)

    melanin

    (c)

    starch

    (d)

    ozone

  11. ______ is a prokaryotic micro organisms.

    (a)

    Virus

    (b)

    algae

    (c)

    fungi

    (d)

    bacteria

  12. Floridian starch is a reserve food material of _______

    (a)

    Chloroplyceae

    (b)

    Phaeophyceae

    (c)

    Rhodophyceae

    (d)

    Cyanophyceae

  13. __________ is tough and thick white sheath that protect the inner parts of the eye.

    (a)

    sclera

    (b)

    conjunctiva

    (c)

    cornea

    (d)

    iris

  14. Fifth generation computer has ___________ Intelligence.

    (a)

    Transistors

    (b)

    Integrated Circuits

    (c)

    Microprocessor

    (d)

    Artificial Intelligence

  15. 11 x 1 = 11
  16. The solid angle is measured in _______.

    ()

    Steradian(Sr)

  17. _______ is used to measure electric current.

    ()

    Ammeter

  18. The angle formed at the vertex of the cone is______

    ()

    Solid angle

  19. Hydraulic lift works under the principle of _____.

    ()

    Pascal's law

  20. Nature of the images formed by a convex mirror is _________.

    ()

    Virtual and erect

  21. _________ is a device which produces numerous pattern of images

    ()

    Kaleidoscope

  22. Water contains _______ and ______ element

    ()

    hydrogen, oxygen

  23. Electrolysis of Brine solution gives ______ gases.

    ()

    Chlorine and hydrogen

  24. _______ are the infectious protein particles.

    ()

    Prion

  25. The book “Genera Plantarum” was written by _________

    ()

    Bentham and Hooker

  26. _______ nerve is located at the end of the eyes behind the retina.

    ()

    Optic

  27. 12 x 1 = 12
  28. SI units are metric system of units.

    (a) True
    (b) False
  29. Amount of substance gives the number of particles present in the substance.

    (a) True
    (b) False
  30. Th e number 4.582 can be rounded off as 4.58.

    (a) True
    (b) False
  31. Heat given to a substance will increase its temperature

    (a) True
    (b) False
  32. Precision is the process of finding the solution by means of estimation

    (a) True
    (b) False
  33. Force acting on a given area is called pressure.

    (a) True
    (b) False
  34. Rolling friction is slightly greater than the sliding friction.

    (a) True
    (b) False
  35. Using barometers, one can measure the height of a building.

    (a) True
    (b) False
  36. Frictional force acts always along direction of the moving body

    (a) True
    (b) False
  37. Browning of some vegetables and fruits is due to tannin formation.

    (a) True
    (b) False
  38. Female anopheles mosquito is a carrier of dengue virus.

    (a) True
    (b) False
  39. Pinus is a closed seeded plant.

    (a) True
    (b) False
  40. 13 x 1 = 13
  41. Temperature

  42. (1)

    Radio telescopes

  43. Kinetic friction

  44. (2)

    Microprocessor

  45. 1 atm

  46. (3)

    oxygen

  47. Parobolic mirror

  48. (4)

    Bacteria

  49. Boron

  50. (5)

    objects are in motion

  51. Tarnishing

  52. (6)

    As a fuel for ignition in rocket

  53. Tuberculosis

  54. (7)

    Artificial Intelligence

  55. Peritrichous

  56. (8)

    Living fossil

  57. Ginko biloba

  58. (9)

    1.01 x lONm-2

  59. Pteropsida

  60. (10)

    E.coli

  61. Glucose

  62. (11)

    Measure of hotness or coldness

  63. Application Software

  64. (12)

    CO2 water and heat

  65. Fifth generation computer

  66. (13)

    Nephrolepis

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