Quarterly Model Question Paper

7th Standard EM

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Science

Time : 03:00:00 Hrs
Total Marks : 100
    7 x 1 = 7
  1. Which of the following is a derived unit?

    (a)

    mass

    (b)

    time

    (c)

    area

    (d)

    length

  2. Which of the following figures represent uniform motion of a moving object correctly?

    (a)

    (b)

    (c)

    (d)

  3. Average speed of a moving object is equal to the magnitude of its average velocity when it travels.

    (a)

    in a straight line without turning back

    (b)

    in a circle

    (c)

    back and forth

    (d)

    in a zig-zag path

  4. The metals which is a liquid at room temperature

    (a)

    Chlorine

    (b)

    Sulphur

    (c)

    Mercury

    (d)

    Silver

  5. A molecule containing three atoms is called a __________ molecule

    (a)

    monoatomic

    (b)

    diatomic

    (c)

    triatomic

    (d)

    polyatomic

  6. Centella is an example of __________

    (a)

    Stolon

    (b)

    Runner

    (c)

    Corm

    (d)

    Rhizome

  7. Which is the example for an Wimation ?

    (a)

    sound communication

    (b)

    visual communication

    (c)

    vector communication

    (d)

    raster communication

  8. 6 x 1 = 6
  9. The area of irregularly shaped figures can be calculated with the help of a _________

    ()

    graph sheet

  10. ____________ is the distance trtavelled by a body per unit time

    ()

    speed

  11. _________is the most abundant gas in the atmosphere.

    ()

    Nitrogen

  12. The _______ revolve around the nucleus.

    ()

    electrons

  13. ____________ is the smallest particle of a chemical element.

    ()

    Atom

  14. ___________ revolve around the nucleus of the atom in specific orbits.

    ()

    Electron

  15. 2 x 1 = 2
  16. Lead is also known as plumbum.

    (a) True
    (b) False
  17. The fundamental particle not present in a hydrogen atom is neutron.

    (a) True
    (b) False
  18. 10 x 1 = 10
  19. Circle

  20. (1)

    Poor light

  21. Light travels through vacuum

  22. (2)

    Attracts insect

  23. Sulphur

  24. (3)

    Real image

  25. Iron

  26. (4)

    Microsoft Photostory

  27. Petal

  28. (5)

    Operating system

  29. Allergies

  30. (6)

    Uniform velocity

  31. Nightblindness

  32. (7)

    π x r2

  33. Video Story

  34. (8)

    Polyatomic molecule

  35. Virtual Reality in 3D

  36. (9)

    Fe

  37. LlNUX

  38. (10)

    Pollen

    10 x 2 = 20
  39. Name some of the derived quantities.

  40. Name the units used to measure the distance between celestial objects.

  41. What is the density of gold?

  42. All objects having uniform speed need not have uniform velocity. Describe with the help of examples.

  43. Give one example where the displacement is zero but the distance travelled is not zero

  44. What do you understand by chemical formula of a compound? What is its significance?

  45. Name the element which is used for making computer chips

  46. What are the agents of pollination?

  47. What is tendril?

  48. What is an inflorescence?

  49. 10 x 3 = 30
  50. A solid cylinder of mass 280 kg has a volume of 4 m3. Find the density of cylinder.

  51. A sphere is made from copper whose mass is 3000 kg. If the density of copper is 8900 kg/m3, find the volume of the sphere.

  52. Distinguish between speed and velocity.

  53. What is non-uniform velocity? Give example

  54. What changes take place in the movement and arrangement of particles during heating process?

  55. How do hot air balloons float?

  56. Why is hydrogen considered as an element?

  57. An atom of an element has no electron, will that atom have any mass or not? Can atom exist without electron? If so then give example.

  58. How do Epiphytic roots differ from Sucking roots?

  59. Why do all plants lack breathing roots?

  60. 5 x 5 = 25
  61. How will you determine the density of a stone using a measuring jar?

  62. How will you find the area of irregular objects?

  63. Write down the properties of metalloids

  64. Explain the postulates of Dalton's atomic theory.

  65. List the diseases affecting the eye, their causative agents, impact and Remedial measures.

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