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Important Question Part-IV

6th Standard

    Reg.No. :
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Science

Time : 03:00:00 Hrs
Total Marks : 200

    Section - I

    36 x 1 = 36
  1. The conversion of 7 m into cm gives

    (a)

    70 cm

    (b)

    700 cm

    (c)

    7 cm

    (d)

    7000 cm

  2. ___________is used to measure the accurate time of the activity.

    (a)

    Clock

    (b)

    Watch

    (c)

    Stop clock

    (d)

    Measuring

  3. Volume of solid is_________

    (a)

    m2

    (b)

    m

    (c)

    m3

    (d)

    none

  4. Oscillatory motion among the following is__________

    (a)

    Rotation of the earth about its axis

    (b)

    Revolution of the moon about the earth

    (c)

    To and fro movement of a vibrating string

    (d)

    All of these.

  5. People walking in a crowded street is example of_________motion

    (a)

    linear

    (b)

    circular

    (c)

    rotatory

    (d)

    zigzag

  6. Usain Bolt crossed 100 metre in____________seconds and made a world record

    (a)

    9.58

    (b)

    9.83

    (c)

    9.85

    (d)

    9.38

  7. _________________are robots scaled down to microscopic size in order to put them with very small spaces to perform a function

    (a)

    car robots

    (b)

    home robots

    (c)

    game robots

    (d)

    nanobots

  8. ___________ of is essential to perform winnowing activity.

    (a)

    Rain

    (b)

    Soil

    (c)

    Water

    (d)

    Air

  9. A standard sheet of paper is about___________ atoms thick.

    (a)

    Thousands

    (b)

    Crores

    (c)

    Lakhs

    (d)

    Million

  10. A drop of water contains about____________ water particles.

    (a)

    1021

    (b)

    1012

    (c)

    1022

    (d)

    1020

  11. Pond is an example of ___________.

    (a)

    Marine Habitat

    (b)

    Freshwater Habitat

    (c)

    Deserts

    (d)

    Mountain

  12. Main axis of the shoot system is called____________.

    (a)

    stem

    (b)

    root

    (c)

    Leaf

    (d)

    buds

  13. World habitat day is observed on first Monday of________.

    (a)

    October

    (b)

    November

    (c)

    September

    (d)

    December

  14. _____________ is one of the fast growing plant during active growth phase.

    (a)

    Mango

    (b)

    Neem

    (c)

    Hibiscus

    (d)

    Bamboo

  15. Which animal has the special organs of breathing called gills

    (a)

    Earthworm

    (b)

    Fox

    (c)

    Fish

    (d)

    frog

  16. Which is not a biotic community among the following?

    (a)

    Plants

    (b)

    Birds

    (c)

    Air

    (d)

    Elephant

  17. Some animals spending winters in a dormant condition is called_______.

    (a)

    Hibernation

    (b)

    Aestivation

    (c)

    Migration

    (d)

    Adaptation

  18. Our body needs _________ for muscle building

    (a)

    carbohydrate

    (b)

    fat

    (c)

    Protein

    (d)

    Water

  19. _________is made in our skin using sunlight

    (a)

    Vitamin D

    (b)

    Vitamin C

    (c)

    Vitamin A

    (d)

    Vitamin B

  20. Any human being should take minimum ___________ of water every day.

    (a)

    2 liters

    (b)

    3 liters

    (c)

    8 liters

    (d)

    6 liters

  21. Who is the father of computer?

    (a)

    Martin Luther King

    (b)

    Graham Bell

    (c)

    Charlie Chaplin

    (d)

    Charles Babbage

  22. Pick out the odd one.

    (a)

    Calculator

    (b)

    Abacus

    (c)

    Flash card

    (d)

    Laptop

  23. One litre of water at 30o C is mixed with one litre of water at 50o C. The temperature of the mixture will be

    (a)

    80o C

    (b)

    More than 50°C but less than 80o C

    (c)

    20o C

    (d)

    around 40o C

  24. The device which converts chemical energy into electrical energy is

    (a)

    fan

    (b)

    solar cell

    (c)

    cell

    (d)

    television

  25. Choose the symbol for battery

    (a)

    (b)

    (c)

    (d)

    _____________

  26. Drying of wet clothes in air is an example of

    (a)

    Chemical change

    (b)

    Undesirable change

    (c)

    irreversible change

    (d)

    physical change

  27. Formation of curd from milk is

    (a)

    a reversible change

    (b)

    a fast change

    (c)

    an irreversible change

    (d)

    an undesirable change

  28. Out of the following an example of a desirable change is

    (a)

    rusting

    (b)

    change of seasons

    (c)

    earthquake

    (d)

    flooding

  29. ____________ is the percentage of nitrogen in air.

    (a)

    78%

    (b)

    21%

    (c)

    0.03%

    (d)

    1%

  30. Nitrogen is used in the food packaging industry because it ________________

    (a)

    provides colour to the food

    (b)

    provides oxygen to the food

    (c)

    adds proteins and minerals to the food

    (d)

    keeps the food fresh

  31. The unit of measurement used for expressing dimension (size) of cell is _________

    (a)

    centimeter

    (b)

    millimeter

    (c)

    micrometer

    (d)

    meter

  32. Under the microscope Priya observes a cell that has a cell wall and distinct nucleus. The cell that she observed is

    (a)

    a plant cell

    (b)

    an animal cell

    (c)

    a nerve cell

    (d)

    a bacteria cell

  33. A ‘control centre’ of the eukaryotic cell is

    (a)

    Cell wall

    (b)

    Nucleus

    (c)

    Vacuoles

    (d)

    Chloroplast

  34. Main organ of respiration in human body is

    (a)

    Stomach

    (b)

    Spleen

    (c)

    Heart

    (d)

    Lungs

  35. Which one of the following is an input device?

    (a)

    Speaker

    (b)

    Keyboard

    (c)

    Monitor

    (d)

    Printer

  36. Pen drive is ___________ device

    (a)

    Output

    (b)

    Input

    (c)

    Storage

    (d)

    Connecting cable

  37. Section - II

    23 x 2 = 46
  38. Arrange in increasing order of unit
    1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.

  39. How can husk or fine dust particles be separated from rice before cooking?

  40. Why do we separate mixtures?

  41. Define the term habitat.

  42. Relate the terms leaves and photosynthesis.

  43. How do the birds catch their prey?

  44. Write two examples for each of the following.
    a) Food items rich in fat.
    b) Vitamin deficiency diseases.

  45. Why should the fruits and vegetables not to be washed after cutting?

  46. Who are the pioneers/ forerunners of computer?

  47. Differentiate Hardware and Software.

  48. Make a list of electrical equipments at home which we get heat from.

  49. In the given circuit diagram, which of the given switch(s) should be closed. So that only the bulb A glows.

  50. What type of circuit is there in a torch light?

  51. What kind of a change is associated with decaying of a plants?

  52. You are given some candle wax. Can you make a candle doll from it? What kind of change is this?

  53. What happens when cane sugar is strongly heated? Mention any two changes in it.


  54. What will happen if we remove plants from the aquarium?


  55. What will happen if we remove the fish from the aquarium and keep it (with green plants) in a dark place?

  56. What type of cells do we have?

  57. What are the essential components of a cell?

  58. Give any three examples of eukaryotic cell?

  59. Describe about skeletal system.

  60. Write any two functions of digestive system.

  61. Section - III

    10 x 3 = 30
  62. A vehicle covers a distance of 400km in 5 hours. Calculate its average speed.

  63. What is meant by food adulteration?

  64. Compare the tap root and fibrous root systems.

  65. What are the different types of invertebrates?

  66. What difference do you think heating the solid will make in their molecules ?

  67. Draw the circuit diagram for series connection.

  68. Can deforestation be considered a desirable change? Explain.

  69. Why do traffic assistants wear a mask on duty?

  70. Distinguish between prokaryotic and eukaryotic cells

  71. Write a short note on rib cage.

  72. Section - IV

    13 x 5 = 65
  73. Fill up the following chart.

    Property Definition Basic unit Instrument used for measuring
    Length      
    Mass      
    Volume      
    Time      
  74. What is motion? Classify different types of motion with examples.

  75. Fill with examples:

  76. Using suitable apparatus from your laboratory separate the mixture of chalk powder, mustard oil, water and coins. Draw a flowchart to show the separation process.

  77. Make a list of the functions of root and stem.

  78. Tabulate the vitamins and their corresponding deficiency diseases.

  79. Explain in detail the Applications of computer.

  80. Explain thermal expansion with suitable examples.

  81. Rahul wants to make an electric circuit. He has a bulb, two wires, a safety pin and a piece of copper. He does not have any electric cell or battery. Suddenly he gets some idea. He uses a lemon instead of a battery and makes a circuit. Will the bulb glow?

  82. When a candle is lit the following changes are observed.
    a. Wax melts.
    b. Candle keeps burning.
    c. The size of the candle decreases.
    d. The molten wax solidifies
    e. Which of the changes can be reversed? Justify your answer.

  83. Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off fire?

  84. Tabulate any five cell organelles and their function.

  85. Label the diagram given below to show the four main parts of the urinary system and answer the following questions.

    A. Which organ removes extra salts and water from the blood?
    B. Where is the urine stored?
    C. What is the tube through which urine is excreted out of the body?
    D. What are the tubes that transfer urine from the kidneys to the urinary bladder called?

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