Annual Exam Model Question Paper 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. ___________is the derived quantity.

    (a)

    Length

    (b)

    Volume

    (c)

    Mass

    (d)

    Time

  2. The area under velocity time graph represents

    (a)

    Velocity of the moving object

    (b)

    Displacement covered by the moving object

    (c)

    Speed of the moving object

  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. Among the following the odd pair is

    (a)

    8O18, 17cl37

    (b)

    18Ar40,7N14

    (c)

    14Si30, 15pd31

    (d)

    24cr54, 19K39

  5. Internal factor which is responsible for food spoilage is  ___________.

    (a)

    catabolic activities

    (b)

    anabolic activities

    (c)

    metabolic activities

    (d)

    enzymatic activities

  6. 1. Abacus belongs to the first generation of the computer
    2. ENIAC was used in the American military

    (a)

    Both the statements are correct

    (b)

    Statement 1 is wrong but 2 is correct

    (c)

    Statement 1 is correct but 2 is wrong

    (d)

    Both the statements are wrong.

  7. The resistance of a straight conductor is independent of__________

    (a)

    temperature

    (b)

    material

    (c)

    cross sectional area

    (d)

    shape of cross section

  8. If Dobereiner is related with 'law of triads', then Newlands is related with
     

    (a)

    Modern periodic law

    (b)

    Hund's rule

    (c)

    Law of octaves

    (d)

    Pauli's Exclusion principle

  9. Bile helps in the digestion of________

    (a)

    proteins

    (b)

    sugar

    (c)

    fats

    (d)

    carbohydrates

  10. Which of the following are infrasonic waves?

    (a)

    5 kHz

    (b)

    25 Hz

    (c)

    10 Hz

    (d)

    15000 Hz

  11. The symbiotic association of fungi and vascular plants is

    (a)

    Lichen

    (b)

    Rhizobium

    (c)

    Mycorhizae

    (d)

    Azotobacter

  12. _________is an Operating System.

    (a)

    Android

    (b)

    Chrome

    (c)

    Internet

    (d)

    Pendrive

  13. Part II

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

    7 x 2 = 14
  14. Convert : 104°F in to Celsius scale.

  15. Place a coin at the bottom of a bucket filled with water. The apparent position of the coin differs from its actual position why?

  16. Is air a pure substance or Mixture? Justify

  17. Compare the charge and mass of protons and electrons.

  18. Which unique feature is seen in Echinoderms?

  19. What is an adulterant?

  20. Who was the first programmer?

  21. What is zygotene?

  22. Define Apiculture

  23. Define the Vaccines

  24. Part III

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

    7 x 4 = 28
  25. Write the rules that are followed in writing the symbols of units in SI system.

  26. The diagram shows the position of a ball a it rolls down a track - the ball took 0.5s sec to roll from one position to other.
    (a) State where the motion of the ball is uniform or non-uniform motion.
    (b) What is the distance travelled by the ball in 2.5 s?
    (c) Find the average velocity of the ball from. A to F.

  27. Pick out the concave and convex mirrors from the following and tabulate them
    Rear-view mirror, Dentist’s mirror, Torch-light mirror, Mirrors in shopping malls, Make-up mirror.

  28. An atom has 17 protons, 17 electrons and 18 neutrons. What is the mass number?

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

  30. Give an account on phylum Annelida.

  31. 2875 J of heat is required to melt 115 g of lead at its melting point. Calculate the specific latent heat capacity of fusion of lead.

  32. The e.m.f of a cell is 1.5V. What is the energy provided by the cell to drive 0.5 C of charge around the circuit?

  33. Draw magnetic field lines around a bar magnet

  34. What is Hardware and Software?

  35. Part IV

    Answer all the questions.

    3 x 7 = 21
    1. Explain simple epithelium and its types.

    2. Suggest the immunization schedule for a new born baby till 12 months of age. Why it is necessary to follow the schedule?

    1. Describe the alimentary canal of man

    2. Give some of the strategies to support water conservation.

    1. State any five features of modern periodic table.

    2. a) A cube of side Scm is immersed in water and then in saturated salt solution. In which case will it experience a greater buoyant force. If each side of the cube is reduced to 4cm and than immersed in water, what will be the effeceon the. buoyant force experienced by the cube as compared to the first case for water. Give reason for each case.
      b) A ball weighing 4kg and density 4000kg/m3 is completely immersed in water of density 103kg/m3. Find the force of buoyancy on it. (given g = 10ms-2).

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