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T1 - Measurement 

7th Standard Science Chapter 1 Measurement Important Question Paper

T1 - Measurement Important Questions

7th Standard

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Science

Time : 02:00:00 Hrs
Total Marks : 75
    5 x 1 = 5

  1. Which of the following is a derived quantity?

    (a)

    mass

    (b)

    time

    (c)

    area

    (d)

    length

  2. Which of the following is correct?

    (a)

    1L = 1cc

    (b)

    1L = 10 cc

    (c)

    1L = 100 cc

    (d)

    1L = 1000 cc

  3. The SI unit of speed is __________

    (a)

    m/s2

    (b)

    m/s

    (c)

    km/h

    (d)

    m2/s

  4. ________ is a derived quantity

    (a)

    length

    (b)

    mass

    (c)

    time

    (d)

    area

  5. The largest distance between the earth and the sun is called as ___________ position.

    (a)

    normal

    (b)

    perihelion

    (c)

    aphelion

    (d)

    none of the above

    6. 5 x 1 = 5

  6. The materials with higher density are called __________

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    denser

  7. The SI unit of volume is __________

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    cubic metre or m3

  8. The CGS unit of density is ________

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    g/cm3

  9. The total number of seconds in one year = _______

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    3.15 3 x 107 second

  10. The corresponding units of fundamental quantities are called ________

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    fundamental units

    11. 3 x 1 = 3

  11. Volume of liquids can be found using measuring containers.

    (a) True
    (b) False

  12. Water is denser than kerosene.

    (a) True
    (b) False

  13. A substance which contains less number of molecules per unit volume is said to be denser.

    (a) True
    (b) False
    14. 7 x 1 = 7

  14. Area

    15. (1)

    Candela

  15. Volume

    16. (2)

    measuring jar

  16. Length

    17. (3)

    amount of a substance

  17. Volume

    18. (4)

    m3

  18. Mass

    19. (5)

    m2

  19. Luminous intensity

    20. (6)

    rope

  20. Milk

    21. (7)

    Litre
    3 x 2 = 6

  21. Assertion: Volume of a stone is found using a measuring cylinder.
    Reason: Stone is an irregularly shaped object.
    a. Both assertion and reason are true and reason is the correct explanation of assertion.
    b. 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.

  22. Assertion: Iron ball sinks in water.
    Reason: water is denser than iron.
    a. Both assertion and reason are true and reason is the correct explanation of assertion.
    b. 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.

  23. Assertion (A): It is easier to swim in sea water than in river water.
    Reason (B): Density of sea water is more than that of river water
    (a) Both A and R are true but R is not the correct reason.
    (b) Both A and R are true and R is the correct reason.
    (c) A is true but R is false.
    (d) A is false but R is true

    24. 2 x 2 = 4

  24. Area: m2 :: Volume _______

  25. Liquid: Litre :: Solid: ________

    26. 5 x 2 = 10

  26. One square metre is the area enclosed inside a square of side 2 metre.

  27. Density is defined as the mass of the substance contained in unit volume

  28. Neptune is 30 AU away from sun.

  29. 1 Light year = 9.46 x 105 m.

  30. One lightyear is defined as the distance travelled by light in vacuum during the period of one year.

    31. 6 x 2 = 12

  31. Name some of the derived quantities.

  32. What is the density of gold?

  33. Find the volume of (Take \(\pi\) = 22/7)
    i. a cube whose side is 3 cm.
    ii. a cylinder whose radius is 3 m and height is 7 m.

  34. Write the SI unit of speed

  35. Mention the formula to calculate area of a circle?

  36. How many fundamental quantities are there is SI units?

    37. 6 x 3 = 18

  37. What are derived quantities?

  38. What is one light year?

  39. There are three spheres A, B, C as shown below:

    Sphere A and B are made of the same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C. Now answer the following questions:
    i. Find the ratio of masses of spheres A and B.
    ii. Find the ratio of volumes of spheres A and B.
    iii. Find the ratio of masses of spheres A and C.

  40. A box is made up of iron and it has a volume of 125 cm3. Find its mass. (Density of iron is 7.8 g / cm3).

  41. Define mass Mention its unit.

  42. What is measurement?

    43. 1 x 5 = 5

  43. Describe the graphical method to find the area of an irregularly shaped plane figure.

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