Term I - Important One Mark Question Paper

9th Standard

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50

    Part A

    15 x 1 = 15
  1. Rulers, measuring tapes and metre scales are used to measure

    (a)

    Mass

    (b)

    Weight

    (c)

    Time

    (d)

    Length

  2. Which of the following graph represents uniform motion of a moving particle

    (a)

    (b)

    (c)

    (d)

  3. The centrifugal force is

    (a)

    Real force

    (b)

    The force of reaction of centripetal force

    (c)

    Virtual force

    (d)

    Directed towards the centre of the circular path.

  4. The field of view * is maximum for ________ 

    (a)

    plane mirror

    (b)

    concave mirror

    (c)

    convex mirror

  5. ______ is essential to perform separation by solvent extraction method.

    (a)

    Separating funnel

    (b)

    centrifuge machine

    (c)

    filter paper

    (d)

    sieve

  6. Filtration method is effective in separating _______ mixture

    (a)

    Solid-solid

    (b)

    solid-liquid

    (c)

    liquid-liquid

    (d)

    liquid-gas

  7. The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

    (a)

    80, 80, 35

    (b)

    35, 55,80

    (c)

    35, 35, 80

    (d)

    35, 45, 35

  8. The chemical reaction occurs during photosynthesis is ________. 

    (a)

    CO2 is reduced and water is oxidized

    (b)

    water is reduced and CO2 is oxidized

    (c)

    both CO2 and water are oxidized

    (d)

    both CO2 and water are produced

  9. During photosynthesis plants exhale _______. 

    (a)

    Carbon dioxide

    (b)

    oxygen

    (c)

    hydrogen

    (d)

    helium

  10. Dysentery is caused by

    (a)

    Entamoeba

    (b)

    Euglena

    (c)

    Plasmodium

    (d)

    Paramecium

  11. Hermaphrodite organisms are

    (a)

    Hydra, Tape worm, Earthworm, Amphioxus

    (b)

    Hydra, Tape worm, Earthworm, Ascidian

    (c)

    Hydra, Tape worm, Earthworm, Balanoglossus

    (d)

    Hydra, Tape worm, Ascaris, Earthworm

  12. Tube like alimentary canal is found in

    (a)

    Hydra

    (b)

    Earth worm

    (c)

    Starfish

    (d)

    Ascaris

  13. The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

    (a)

    James Lind

    (b)

    Louis Pasteur

    (c)

    Charles Darwin

    (d)

    Isaac Newton

  14. _________ belongs to the generation IV of the computer

    (a)

    Microprocessor

    (b)

    Artificial intelligence

    (c)

    Transistor

    (d)

    Vaccum Tubes

  15. Part B

    15 x 1 = 15
  16. Metre is the unit of ________

    ()

    length

  17. 1 kg of rice is weighed by ______

    ()

    beam balance

  18. Consider an object is rest at position x = 20m. Then its displacement – time graph will be straight line to _____________ the axis.

    ()

    Parallel to

  19. In going from a rarer to denser medium, the ray of light bends _________

    ()

      towards the normal

  20. Large _________ mirrors are used to concentrate sunlight to produce heat in solar furnaces

    ()

      concave reflector

  21. 1500C = __________ K

    ()

      

  22. Alcohol can be separated from water by _________________

    ()

    fractional distillation

  23. Calcium and Argon are examples of a pair of __________

    ()

    isobars     

  24. The number of neutrons present in \(_{ 3 }^{ 7 }{ Li }\) is ------

    ()

      4 

  25. __________ is positively hydrotropic as well as positively geotropic.

    ()


    Root

  26. Plants inhale and exhale continuously through the __________.

    ()


    Stomata

  27. The excretory opening of Porifera is________ 

    ()

    Ostia

  28. Blue revolution is the rearing of ______________.

    ()

    Fishes

  29. Deficiency diseases can be prevented by taking _______________ diet.

    ()

    balanced

  30. The process of affecting the natural composition and the quality of food substance is known as _______________

    ()

    Adulteration

  31. Part C

    10 x 1 = 10
  32. Motion with non uniform acceleration

  33. (1)

    Positive geotropism

  34. Constant retardation

  35. (2)

    Osteoporosis

  36. Coin inside water appearing slightly raised

  37. (3)

    refraction

  38. Used as Dentist’s mirror

  39. (4)

    1.6 x 10-19C

  40. Mass of electron

  41. (5)

    II generation

  42. Charge of proton

  43. (6)

    9.31 x 10-28g

  44. Roots growing downwards into soil

  45. (7)

  46. Calcium

  47. (8)

    Muscular fatigue

  48. Potassium

  49. (9)

  50. Transistor

  51. (10)

    magnification

    Part D

    10 x 1 = 10
  52. One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K

    (a) True
    (b) False
  53. The velocity – time graph of a particle falling freely under gravity would be straight line parallel to the x axis

    (a) True
    (b) False
  54. If the velocity – time graph of a particle is a straight line inclined to time axis then its displacement – time graph will be a straight line?

    (a) True
    (b) False
  55. An object is placed at distance of 3 cm from a plane mirror. The distance of the object and image is 3 cm.

    (a) True
    (b) False
  56. The distance from centre of curvature of the mirror to the pole is called the focal length of the mirror.

    (a) True
    (b) False
  57. Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.

    (a) True
    (b) False
  58. Electrons have negligible mass and charge.

    (a) True
    (b) False
  59. Scientific term used to represent the bending of roots towards water is called geotropism.

    (a) True
    (b) False
  60. Fishes have two chambered heart.

    (a) True
    (b) False
  61. Vitamins are required in large quantities for normal functioning of the body -

    (a) True
    (b) False

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