Annual Exam Model Question Paper 2 - 2019 - 2020

9th Standard

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Science

Time : 02:45:00 Hrs
Total Marks : 75

    Part I

    Answer all the questions.

    Choose the most suitable answer from the given four alternatives and write the option code with the corresponding answer.

    12 x 1 = 12
  1. There are___________fundamental units in SI system of units.

    (a)

    7

    (b)

    4

    (c)

    6

    (d)

    5

  2. In a 100 m race, the winner takes 10s to reach the finishing point. The average speed of the winner is ___________ ms-1

    (a)

    5

    (b)

    10

    (c)

    20

    (d)

    40

  3. The centre of the sphere, of which a spherical mirror is a part is called ______________________

    (a)

    pole

    (b)

    radius of curvature

    (c)

    focus

    (d)

    centre of curvature

  4. The correct electronic configuration of potassium is

    (a)

    2,8,9

    (b)

    2,8,1

    (c)

    2,8,8,1

    (d)

    2,8,8,3

  5. Which one of the following is a disaccharide?

    (a)

    Maltose

    (b)

    Starch

    (c)

    Chitin

    (d)

    Cellulose

  6. ____________ is an electronic device which stores data and information

    (a)

    Telescope

    (b)

    Television

    (c)

    Computer

    (d)

    Radio

  7. Assertion (A) Electric current will not flow between two charged bodies when connected if their charges are same.
    Reason (R) Current is the rate of flow of charge.

    (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)

    If assertion is true but reason is false

    (d)

    If assertion is false but reason is true.

  8. Elements in the modern periodic table are arranged in__________ groups and __________ periods.

    (a)

    7,18

    (b)

    18,7

    (c)

    17,8

    (d)

    8, 17

  9. Stomach of man mainly digests

    (a)

    carbohydrates

    (b)

    proteins

    (c)

    fat

    (d)

    sucrose

  10. A Sonar device on a submarine send out a signal and receives an echo 5 seconds later. Calculate the speed of sound it water if the distance of the object from the submarine is 3500 m

    (a)

    1440 rns-1

    (b)

    1460 rns-1

    (c)

    1400 ms-1

    (d)

    1550 rns-1

  11. Which one of the following is an Italian species of honey bee?

    (a)

    Apis mellifera

    (b)

    Apis dorsata

    (c)

    Apis florae

    (d)

    Apis cerana

  12. LINUX is a

    (a)

    Paid Software

    (b)

    Licensed Software

    (c)

    Free and Proprietary software

    (d)

    Free and Open source software

  13. Part II

    Answer any 7 questions. Question no. 22 is compulsory.

    7 x 2 = 14
  14. What is the full form of SI system?

  15. Why are convex mirrors preferred to use rear view mirrors in vehicles?

  16. Is air a pure substance or Mixture? Justify

  17. Name an element which has the same number of electrons in its first and second shell

  18. Which fluid fills in the body cavity?

  19. Name any two naturally occuring toxic substances in food.

  20. Who is the father of modern computer?

  21. What is plate meristem?

  22. Differentiate 
    a. Exotic breed and Indigenous breed
    b. Pollen and Nectar
    c. Shrimp and Prawn
    d. Fin fish and Shell fish
    e. Farmyard manure and Sheep manure

  23. Define the Vaccines

  24. Part III

    Answer any 7 questions. Question no. 32 is compulsory.

    7 x 4 = 28
  25. How will you measure the least count of vernier caliper ?

  26. How do we separate cream from milk?

  27. What is meant by magnification? Write its expression. What is its sign for the
    a) real image b) virtual image

  28. Calculate the atomic number of an element whose mass number is 40 and number of neutron is 20.·Also find the name of the element.

  29. Explain the experiment to prove that chlorophyll is essential for photosynthesis

  30. How is the reproductive characters of mammals different from those of Aves?

  31. What will be the final temperature it 1,68,000 J of heat is absorbed by 2 kg of water at 30°C?

  32. The current flowing through a lamp is 0.2A. If the lamp is switched on for one hour, What is the total electric charge that passes through the lamp?

  33. Give the uses of magnets in everyday life

  34. What is Hardware and Software?

  35. Part IV

    Answer all the questions.

    3 x 7 = 21
    1. State any five features of modern periodic table.

    2. Explain the components of phloem tissue

    1. Explain the structure of kidney and the steps involved in the formation of urine

    2. Name the instrument used to check the purity of milk. What is its principle? How does it work? where it is used?

    1. What is the role played by the earthworms to improve the soil fertility? How does it adapt to light and temperature

    2. Give an account of classification of bacteria based on the shape.

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