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8th Standard Science Term 1 Model Question Paper 2 Question Bank Software Aug-19 , 2019

8th Standard Science Term 1 Model Question Paper 2

Term 1 Model Questions

8th Standard

    Reg.No. :
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Science

Time : 02:00:00 Hrs
Total Marks : 60
    6 x 1 = 6

  1. SI unit stands for

    (a)

    International system of units

    (b)

    Integrated System of units

    (c)

    International symbol of units

    (d)

    Integrated symbol of units

  2. The unit for surface tension is _________

    (a)

    Nm

    (b)

    N-1m

    (c)

    N-1m-1

    (d)

    Nm-1

  3. The liquid metal used in thermometers is

    (a)

    Copper

    (b)

    Mercury

    (c)

    Silver

    (d)

    Gold

  4. Burning of paper is a______ change.

    (a)

    Physical

    (b)

    chemical

    (c)

    physical & chemical

    (d)

    neutral

  5. Limestone contains ______ mainly.

    (a)

    Calcium chloride

    (b)

    calcium carbonate

    (c)

    calcium nitrate

    (d)

    calcium sulphate

  6. Based on shape, the bacteria are classified into _______ types.

    (a)

    2

    (b)

    3

    (c)

    4

    (d)

    5

    7. 5 x 1 = 5

  7. _______ is used to measure electric current.

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    Ammeter

  8. A simple barometer was first constructed by _____.

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    Torricelli

  9. __________ is the best reflector of light

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    Silver

  10. ______ is the basic material to manufacture urea.

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    Ammonia

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

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    Bentham and Hooker

    12. 5 x 1 = 5

  12. If One coulomb of charge flowing in one minute, it is called ‘ampere’.

    (a) True
    (b) False

  13. Rolling friction is slightly greater than the sliding friction.

    (a) True
    (b) False

  14. Citrus canker is transmitted by insects.

    (a) True
    (b) False

  15. All bryophytes are hydrophytes.

    (a) True
    (b) False

  16. The dominant phase of the pteridophytes is diploid(2n).

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

  17. Lubricants

    18. (1)

    reduce friction

  18. Snell’s law

    19. (2)

    Vaccine

  19. Compound

    20. (3)

    Atoms of different kinds

  20. Edward Jenner

    21. (4)

    sin i /sin r = μ

  21. Hardware

    22. (5)

    RAM
    3 x 2 = 6

  22. Assertion: The SI system of units is the suitable system for measurements.
    Reason: The SI unit of temperature is Kelvin.
    a. Both assertion and reason are true and reason is the correct explanation of the assertion.
    b. Both assertion and reason are true but reason is not the correct explanation of the assertion.
    c. Assertion is true, but reason is false.
    d. Both assertion and reason are false.

  23. Assertion (A): Clinical thermometers are graduated in fahrenheit scale.
    Reason (R): Weather reports are given in celsius scael
    a) If both assertion and reason are true but reason is the correct explanation of the assertion.
    b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
    c) Assertion is true but reason is false.
    d) Assertion is false, but reason is true.

  24. Assertion(A): Bryophytes are called Amphibians of the plant kingdom.
    Reason(R): Bryophytes are land plants but they need water for the completion of their life cycle.
    a) A correct R correct
    b) A incorrect R correct
    c) A and R correct R explain A
    d) A and R incorrect

    25. 2 x 2 = 4

  25. Mercury: liquid metal_________liquid non-metal

  26. Iron in water and air: Brown colour :: Iron in copper sulphate solution:_________

    27. 5 x 2 = 10

  27. Convert 60° into radian.

  28. Focal length of a spherical mirror is 7 cm. What is its radius of curvature?

  29. What is pollution?

  30. Who discovered penicillin?

  31. Differentiate between Osmoconformers and Osmoregulators?

    32. 3 x 3 = 9

  32. Define- Temperature.

  33. Mention any three ways of minimising friction.

  34. State the laws of reflection.

    35. 2 x 5 = 10

  35. Explain the three types of pollution.

  36. Differentiate between inhalation and exhalation.

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