Term 1 Model Questions

7th Standard EM

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Science

Time : 01:30:00 Hrs
Total Marks : 60
    5 x 1 = 5
  1. The SI unit of speed is __________

    (a)

    m/s2

    (b)

    m/s

    (c)

    km/h

    (d)

    m2/s

  2. From the given v-t graph it can be inferred that the object is

    (a)

    in uniform motion

    (b)

    at rest

    (c)

    in non uniform motion

    (d)

    moving with uniform acceleration

  3. Which of the following is an example of a metal?

    (a)

    Iron

    (b)

    Oxygen

    (c)

    Helium

    (d)

    Water

  4. The subatomic particle revolve around the nucleus is _______.

    (a)

    Atom

    (b)

    Neutron

    (c)

    Electron

    (d)

    Proton

  5. Asexual reproduction in yeast is

    (a)

    Spore formation

    (b)

    Fragmentation

    (c)

    Pollination

    (d)

    Budding

  6. 5 x 1 = 5
  7. Density of mercury is _______

    ()

    13,600 kg/m3

  8. If the velocity of an object increases with respect to time, then the object is said to be in__________ acceleration.

    ()

    positive

  9. The smallest particle of matter that can exist by itself______

    ()

    atom

  10. The nucleus has ________ and ________.

    ()

    Protons, Neutrons

  11. I am green colour box with garbage. Who am I? ________

    ()

    Bio degradable waste

  12. 4 x 1 = 4
  13. The region covered by the boundary of the plane figure is called its volume

    (a) True
    (b) False
  14. A ball of iron floats in mercury.

    (a) True
    (b) False
  15. The transfer of pollen to the stigma is known as pollination.

    (a) True
    (b) False
  16. Leaves of Aloe vera are fleshy and store water.

    (a) True
    (b) False
  17. 5 x 1 = 5
  18. Volume

  19. (1)

    Chrysanthemum

  20. Speed of ship

  21. (2)

    m3

  22. Sucker

  23. (3)

    Cramps in legs

  24. Cholera

  25. (4)

    Knot

  26. Video Story

  27. (5)

    Microsoft Photostory

    1 x 5 = 5
  28. The volume of water is a measuring cylinder is 50 ml. When a stone is tied to a string is immersed in the water, the water level rises to 83 ml. Find the volume of the stone.

  29. 3 x 2 = 6
  30. Assertion: Wood floats in water.
    Reason: Water is a transparent liquuid
    a. If both assertion and reason are true and reason is the correct explanation of assertion.
    b. If both assertion and reason are true, but reason is not the correct explanation of assertion.
    c. Assertion is true but reason is false.
    d. Assertion is false but reason is true.

  31. Directions: Please refer to the following instructions:

    1st Statement 2nd Statement
    Oxygen is a compound Oxygen cannot be broken down into anything simpler
    Hydrogen is an element Hydrogen cannot be broken down into anything simpler
    Air is a compound Air consists of carbon dioxideq
    Air is a mixture of elements only Only nitrogen, oxygen and neon gases exist in air
    Mercury is solid in room temperature Mercury is a non-metal

    A. Both statements are true and the 2nd statement is a correct explanation of the 1st statement.
    B. Both statements are true but the 2nd statement is NOT a correct explanation of the 1st statement.
    C. The 1st statement is false while the 2nd statement is true.
    D. Both statements are false.

  32. Assertion: An atom is electrically neutral.
    Reason: Atoms have equal number of protons and electrons.

  33. 10 x 2 = 20
  34. Name some of the derived quantities.

  35. What is the density of gold?

  36. What is the distance between the earth and proxima centauri star?

  37. Name the constituents of water.

  38. Define an atom.

  39. Define – pollination.

  40. Describe a stamen.

  41. Name two disease which can be prevented by vaccination.

  42. What is Raster Graphics?

  43. What is 'Photoshop'?

  44. 2 x 5 = 10
  45. Differentiate metals and non metals.

  46. Write about any three Communicable diseases in details.

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