Creative Questions Part-III

10th Standard

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Science

Time : 01:30:00 Hrs
Total Marks : 100

    Part-A

    23 x 1 = 23
  1. ______ deals with the bodies which are at rest under the action of forces.

    (a)

    Statics

    (b)

    Kinematics

    (c)

    Dynamics

    (d)

    Mechanics

  2. For air, the refractive index is

    (a)

    1

    (b)

    infinity

    (c)

    0

    (d)

    1

  3. The amount of heat energy required to rise the temperature of 1gram of water through 10C is _____

    (a)

    One kilo calorie

    (b)

    One joule

    (c)

    One kelvin

    (d)

    One caloric

  4. Which of the following produces large joule heating effect?

    (a)

    1A current through 2Ω resister for 3 seconds

    (b)

    1A current through 3Ω resistor for 2 seconds

    (c)

    2A current through 1Ω resistor for 2 seconds

    (d)

    3A current through 1Ω resistor for 1 second

  5. A sound wave passes through gold rod and comes into the surrounding air. What is the relation between original wavelength A and new wavelength λ'?

    (a)

    λ=λ'

    (b)

    λ>λ'

    (c)

    λ<λ'

    (d)

    None of the above

  6. For production of radio - isotopes, we use _______ reactions

    (a)

    research

    (b)

    power

    (c)

    production

    (d)

    absorber

  7. One mole of a gas occupies a volume of 22.4 l. This is derived from:

    (a)

    Berzelius's hypothesis

    (b)

    Gay- Lussac's law

    (c)

    Avogadro's law

    (d)

    Dalton's law

  8. The distance from the centre of the nucleus to the outer most electron in an ion is termed as _________ radii.

    (a)

    atomic

    (b)

    ionic

    (c)

    Covalent

    (d)

    both (b) and (c)

  9. Which of the following factors affect solubility?

    (a)

    temperature

    (b)

    pressure

    (c)

    nature of solute and solvent

    (d)

    all the above

  10. Pb(NO3)2 + 2KI ⟶ Pbl2 + 2KNO3 is a ______________ reaction

    (a)

    neutralization

    (b)

    Precipitation

    (c)

    decomposition

    (d)

    Combustion

  11. Cyclobutane is an example of ______________ compounds.

    (a)

    a cyclic

    (b)

    cyclic

    (c)

    aromatic

    (d)

    alicyelic

  12. The inner mitochondrial membrane gives rise to finger like projections called ____________

    (a)

    oxysomes

    (b)

    matrix

    (c)

    cristae

    (d)

    stalk

  13. The third Ventricle in brain of Rabbit lives in______

    (a)

    cerebrum

    (b)

    cerebellum

    (c)

    diencephalon

    (d)

    medulla

  14. The number of______ increases during allergy.

    (a)

    Basophil

    (b)

    RBC

    (c)

    Eosinophil

    (d)

    Monocyte

  15. ______ is not a characteristic of neuron.

    (a)

    dendrites

    (b)

    axon

    (c)

    axolemma

    (d)

    can divide

  16. _____ is known as father of Endocrinology.

    (a)

    Thomas Addison

    (b)

    W. M. Bayliss

    (c)

    E. H. Starling

    (d)

    Frits Warmolt Went

  17. Lack of menstruation generally indicates________

    (a)

    Pregnancy

    (b)

    Anemia

    (c)

    Amenorrhea

    (d)

    Over weight

  18. Choose the correct pair

    (a)

    A=T

    (b)

    G=A

    (c)

    A=C

  19. Charles Darwin was a great __________.

    (a)

    Chemist

    (b)

    Naturalist

    (c)

    Doctor

    (d)

    Physicist

  20. ________ is father of "Indian Green Revolution"

    (a)

    Dr. M. S. Swaminathan

    (b)

    Dr. Norman

    (c)

    Alec Jeffrey

    (d)

    Dr. Ian Wilmut

  21. ____________ is not a method of treatment for cancer.

    (a)

    Surgery

    (b)

    Immunotherapy

    (c)

    Vasectomy

    (d)

    Radiation therapy

  22. There are______ biosphere reserves in India.

    (a)

    5

    (b)

    13

    (c)

    15

    (d)

    18

  23. Which button we use to select a required program?

    (a)

    Program button

    (b)

    Program button

    (c)

    My Computer

    (d)

    Start Button

  24. Part-B

    23 x 2 = 46
  25. Take two eggs and drop them from a certain height one by one. Drop one egg onto a concrete floor and another one onto a cushion pillow. What changes do you notice? When the egg is dropped onto a concrete floor, it breaks. But, the egg dropped onto the cushion pillow does not break. Can you explain why?

  26. Name and explain the types of scattering?

  27. What is real gas?

  28. Three V-I graphs are drawn individually for two resistors and their series combination. Out of A, B, C which one represents the graph for series combination of the other two. Give reason for y or ansiver.

  29. How can we measure the depth of a sea by using "SONAR"?

  30. Why nuclei fusion is called thermonuclear reaction?

  31. What is gram atomic mass? Give example?

  32. Define metallic radius.

  33. Define hygroscopic substance.

  34. Define concentration

  35. An organic compound A' of molecular formula C2H6O on oxidation with dilute alkaline KMnO4 solution gives an acid 'B' with the same number of carbon atoms. Compound A' is often used for sterilization of skin by doctors. Name the compound. Write the chemical equation involved in the formation of 'B' from A.

  36. List the functions of chloroplast.

  37. Can leeches cause diseases.

  38. Write the components of the blood.

  39. What are neuroglia.

  40. Mention the physiological effects of ABA.

  41. Define menstrual cycle?

  42. Why do all the gametes formed in humanfemales have an X - chromosome?

  43. Explain Atavism?

  44. Mention two characteristics of stem cells.

  45. Mention some behavioural changes seen in drug users.

  46. List the environmental concerns of shale gas

  47. Distinguish file and folder.

  48. Part-C

    23 x 4 = 92
  49. What are the concepts prepared by Galileo?

  50. Explain Raman Scattering.

  51. With an illustration, explain the method of Calculation for linear expansion of an object.

  52. Write any five electrical components used in electrical circuit and draw its symbol.

  53. Write any two applications for reflection of sound?

  54. What are the precautions to be taken by people working in radiation labs?

  55. Give the applications of Avogadro's hypothesis.

  56. How are magnetic ores separated from non magnetic impurities? Explain.

  57. Write some solubility substances in water at 25°C.

  58. Explain the classification based on the direction of the reaction.

  59. How will you classify organic compounds based on the pattern of carbon chain?

  60. Why is a dicot leaf described as dorsiventral?

  61. Man is a mammal and has incisors and Ecanine.Rabbits are mammals but lack  canines. Explain.

  62. Write a note an ABO blood grouping.

  63. Tabulate the different parts of the brain and their functions.

  64. (a) Describe the structure of thyroid gland?
    (b) List the functions of thyroid hormones.

  65. Describe the structure of human sperm.

  66. Write a note on mutation

  67. Write a note on evidences from Morphology and Anatomy in favour of Evolution.

  68. Why are Genetically modified organisms produced? Explain the purpose and advantages.

  69. What is diabetes? Explain the types.

  70. Afamily has 3 three cars and can afford to buy fuel. They prefer to go out independently. Is it right to suggest car pooling for such people. Justify.

  71. Explain in detail the uses and main parts of the 'SCRATCH' animation software

  72. Part-D

    7 x 7 = 49
  73. A body of mass 2 kg moving with uniform velocity of 40 ms-1 collides with another body at rest. If two bodies move together with a velocity of 20 m-1, Find the mass of the other body.

  74. When an object is placed at 25cm from a concave lens, a virtual image is produced at a distance of 10cm. Calculate the magnification produced by the lens.

  75. If boiling point of water is 95°F, What will be the reading in kelvin scale?

  76. What is the resistance of heating element of the heater when 20 A current passing through it at a potential of 220 V?

  77. What is the frequency heard by a stationary observer when a train approaches with a speed of 30 ms-1. The frequency of the train is 600 Hz and the speed of sound is 340 m/s?

  78. Complete the following fission reactions:
    (a) 92U2350n1 ⇾38Sr90+Xe+30n1
    (b) 92U2350n1 ⇾43Tc107+n+50n1

  79. Calculate the number of molecules in 11g of CO2

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