Full Portion - Important One Mark Question Paper

9th Standard

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Science

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

    Multiple Choice Question

    85 x 1 = 85
  1. Choose the correct one

    (a)

    mm< cm < m < km

    (b)

    mm > cm > m > km

    (c)

    km < m < cm < mm

    (d)

    mm > m> cm> km

  2. Rulers, measuring tapes and metre scales are used to measure

    (a)

    Mass

    (b)

    Weight

    (c)

    Time

    (d)

    Length

  3. 1 metric ton is equal to

    (a)

    100 quintals

    (b)

    10 quintals

    (c)

    1/10 quintals

    (d)

    1/100 quintals

  4. Distance between Chennai and Kanyakumari can be found in

    (a)

    Kilometres

    (b)

    Metres

    (c)

    Centimetres

    (d)

    Millimetres

  5. Which among the following is not a device to measure mass

    (a)

    Spring balance

    (b)

    Beam balance

    (c)

    Physical balance

    (d)

    Digital balance

  6. Slope of the velocity - time graph gives

    (a)

    speed

    (b)

    displacement

    (c)

    distance

    (d)

    acceleration

  7. Which of the following graph represents uniform motion of a moving particle

    (a)

    (b)

    (c)

    (d)

  8. A body moving with an initial velocity 5ms-1 and accelerates at 2ms-2. Its velocity after 10s is

    (a)

    20ms-1

    (b)

    25ms-1

    (c)

    5ms-1

    (d)

    22.55ms-1

  9. In a 100 m race, the winner takes 10s to reach the finishing point. The average speed of the winner is

    (a)

    5ms-1

    (b)

    20ms-1

    (c)

    40 ms-1

    (d)

    10 ms-1

  10. 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

    (d)

    acceleration of the moving object

  11. A car is being driven at a speed of 20 ms-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

    (a)

    +4 ms-2

    (b)

    ‒4 ms-2

    (c)

    ‒0.25 ms-2

    (d)

    +0.25 ms-2

  12. Unit of acceleration is

    (a)

    ms-1

    (b)

    ms-2

    (c)

    ms

    (d)

    ms2

  13. Which one of the following is most likely not a case of uniform circular motion?

    (a)

    Motion of the Earth around the Sun

    (b)

    Motion of a toy train on a circular track

    (c)

    Motion of a racing car on a circular track.

    (d)

    Motion of hours hand on the dial of the clock

  14. The force responsible for drying of clothes in a washing machine is

    (a)

    Centripetal force

    (b)

    Centrifugal force

    (c)

    Gravitational force

    (d)

    Electro static force

  15. The centrifugal force is

    (a)

    Real force

    (b)

    The force of reaction of centripetal force

    (c)

    Virtual force

    (d)

    Directed towards the centre of the circular path.

  16. 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

  17. When a body starts from rest, the acceleration of the body after 2second in _____________ of its displacement

    (a)

    Half

    (b)

    Twice

    (c)

    Four times

    (d)

    One fourth

  18. 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

  19. Force involved in uniform circular motion is given by _______________

    (a)

    f = mv2/r

    (b)

    f = mvr

    (c)

    f= mr2/v

    (d)

    f = v2/r

  20. Choose correct statement
    (a) Action and reaction forces act on same object
    (b) Action and reaction forces act on different objects
    Both (a) and (b) are possible
    Neither (a) nor (b) is correct

    (a)

    Action and reaction forces act on same object

    (b)

    Action and reaction forces act on different objects

    (c)

    Both (a) and (b) are possible

    (d)

    Neither (a) nor (b) is correct

  21. The field of view * is maximum for ________ 

    (a)

    plane mirror

    (b)

    concave mirror

    (c)

    convex mirror

  22. When a ray of light passes from one medium to another medium, refraction takes place when angle of incidence is

    (a)

    0o

    (b)

    45o

    (c)

    90o

  23. _________ is used as reflectors in torchligh

    (a)

    concave mirror

    (b)

    convex mirror

    (c)

    plane mirror

  24. When the reflecting surface is curved outwards the mirror formed will be

    (a)

    concave mirror

    (b)

    convex mirror

    (c)

    plane mirror

  25. The focal length of a concave mirror is 5cm. Its radius of curvature is

    (a)

    5 cm

    (b)

    10 cm

    (c)

    2.5 cm

  26. When a beam of white light passes through a prism it gets

    (a)

    Reflected

    (b)

    deviated and dispersed

    (c)

    only deviated

  27. The speed of light is maximum in

    (a)

    vacuum

    (b)

    glass

    (c)

    diamond

  28. A real and enlarged image can be obtained by using a

    (a)

    convex mirror

    (b)

    plane mirror

    (c)

    concave mirror

  29. Which of the following statements about total internal reflection is true?

    (a)

    angle of incidence should be greater than critical angle

    (b)

    light must travel from a medium of higher refractive index to a medium of lower refractive index

    (c)

    both (a) and (b)

  30. The physical state of water at 373 K is

    (a)

    Solid

    (b)

    liquid

    (c)

    vapour

    (d)

    plasma

  31. Among the following______is a mixture

    (a)

    Common Salt

    (b)

    Juice

    (c)

    Carbon dioxide

    (d)

    Pure Silver

  32. When we mix a drop of ink in water we get a__________

    (a)

    Heterogeneous Mixture

    (b)

    Homogeneous Mixture

    (c)

    Compound

    (d)

    Suspension

  33. The constituents that form a mixture are also called

    (a)

    Elements

    (b)

    Compounds

    (c)

    Alloys

    (d)

    Components

  34. __________ has the same properties throughout the sample

    (a)

    Pure substance

    (b)

    Mixture

    (c)

    Colloid

    (d)

    Suspension

  35. Difference in ________________is the principle used in fractional distillation

    (a)

    solubility

    (b)

    melting point

    (c)

    boiling point

    (d)

    adsorption

  36. The separation of denser particles from lighter particles done by rotation at high speed is called ________

    (a)

    Filtration

    (b)

    sedimentation

    (c)

    decantation

    (d)

    centrifugation

  37. ______ is essential to perform separation by solvent extraction method.

    (a)

    Separating funnel

    (b)

    centrifuge machine

    (c)

    filter paper

    (d)

    sieve

  38. Filtration method is effective in separating _______ mixture

    (a)

    Solid-solid

    (b)

    solid-liquid

    (c)

    liquid-liquid

    (d)

    liquid-gas

  39. For a simple distillation process we need to have

    (a)

    an evaporating dish

    (b)

    a separating funnel

    (c)

    a filter with filter paper

    (d)

    a Liebig condenser

  40. Among the following the odd pair is

    (a)

    8O18, 17cl37

    (b)

    18Ar40,7N14

    (c)

    14Si30, 15pd31

    (d)

    24cr54, 19K39

  41. Change in the number of neutrons in an atom changes it to

    (a)

    an ion

    (b)

    an isotope

    (c)

    an isobar

    (d)

    another element

  42. The term nucleons refer to

    (a)

    Protons and electrons

    (b)

    only Neutrons

    (c)

    electrons and neutrons

    (d)

    Protons and neutrons

  43. The number of protons, neutrons and electrons present respectively in \(_{ 35 }^{ 80 }{ Br }\)

    (a)

    80, 80, 35

    (b)

    35, 55,80

    (c)

    35, 35, 80

    (d)

    35, 45, 35

  44. 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

  45. A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

    (a)

    water and light

    (b)

    water and minerals

    (c)

    gravity and water

    (d)

    light and gravity

  46. The tropic movement that helps the climbing vines to find a suitable support is ________. 

    (a)

    phototropism

    (b)

    geotropism

    (c)

    thigmotropism

    (d)

    chemotropism

  47. The chemical reaction occurs during photosynthesis is ________. 

    (a)

    CO2 is reduced and water is oxidized

    (b)

    water is reduced and CO2 is oxidized

    (c)

    both CO2 and water are oxidized

    (d)

    both CO2 and water are produced

  48. Transpiration is best defined as _________ 

    (a)

    loss of water by the plant

    (b)

    evaporation of water from the aerial surfaces from the plant

    (c)

    loss of water in the form of water vapour from the underground parts of the plant body

    (d)

    release of water from the plant into the atmosphere

  49. The bending of root of a plant in response to water is called _________ 

    (a)

    thigmonasty

    (b)

    phototropism

    (c)

    hydrotropism

    (d)

    photonasty

  50. A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The top part of the seedling bends towards the burning candle. This is an example of ____________.

    (a)

    chemotropism

    (b)

    thigmotropism

    (c)

    phototropism

    (d)

    geotropism

  51. The root of the plant is __________.
    i) positively phototropic but negatively geotropic
    ii) positively geotropic but negatively phototropic
    iii) negatively phototropic but positively hydrotropic
    iv)negatively hydrotropic but positively phototropic

    (a)

    (i) and (ii)

    (b)

    (ii) and (iii)

    (c)

    (iii) and (iv)

    (d)

    (i) and (iv)

  52. The plant part which exhibits negative geotropism is __________.

    (a)

    root

    (b)

    stem

    (c)

    branch

    (d)

    leaves

  53. The non-directional movement of a plant part in response to temperature is called ________.

    (a)

    thermotropism

    (b)

    Thermonasty

    (c)

    chemotropism

    (d)

    thigmonasty

  54. Dandelion flowers open the petals in bright light during the day time but close the petals in dark at night. This response of Dandelion flowers is called ___________.

    (a)

    geonasty

    (b)

    thigmonasty

    (c)

    chemonasty

    (d)

    photonasty

  55. During photosynthesis plants exhale _______. 

    (a)

    Carbon dioxide

    (b)

    oxygen

    (c)

    hydrogen

    (d)

    helium

  56. Chlorophyll in a leaf is required for __________.

    (a)

    photosynthesis

    (b)

    transpiration

    (c)

    tropic movement

    (d)

    nastic movement

  57. A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to _______.

    (a)

    remove chlorophyll from the leaf

    (b)

    remove starch from the leaves

    (c)

    ensure that photosynthesis occurred

    (d)

    to prove transpiration

  58. Transpiration takes place through _____________.

    (a)

    fruit

    (b)

    seed

    (c)

    flower

    (d)

    stomata

  59. Which is not an insect?

    (a)

    House fly

    (b)

    Bedbug

    (c)

    Mosquito

    (d)

    Spider

  60. Find the group having only marine members

    (a)

    Mollusca

    (b)

    Porifera

    (c)

    Coelenterata

    (d)

    Echinodermata

  61. Mesoglea is present in

    (a)

    Porifera

    (b)

    Coelenterata

    (c)

    Annelida

    (d)

    Arthropoda

  62. Dysentery is caused by

    (a)

    Entamoeba

    (b)

    Euglena

    (c)

    Plasmodium

    (d)

    Paramecium

  63. Which one of the following pairs is not a poikilothermic animal

    (a)

    Fishes and Amphibians

    (b)

    Amphibians and Aves

    (c)

    Aves and Mammals

    (d)

    Reptiles and mammals

  64. Identify the animal having four chambered heart

    (a)

    Lizard

    (b)

    Snake

    (c)

    Crocodile

    (d)

    Calotes

  65. Which is not a feature of chordates

    (a)

    Green glands

    (b)

    Sweat glands

    (c)

    Sebaceous gland

    (d)

    Mammary gland

  66. The bilaterally symmetrical larvae which transform into radially symmetrical adult is

    (a)

    Bipinnaria

    (b)

    Trochophore

    (c)

    Tadpole

    (d)

    Polyp

  67. The animal without skull is

    (a)

    Acrania

    (b)

    Acephalia

    (c)

    Apteria

    (d)

    Acoelomate

  68. Choose the correct terms related for Hemichordate

    (a)

    Vermiform, unsegmented, triploblastic, ciliary feeders

    (b)

    Vermiform, segmented, triploblastic, ciliary feeders

    (c)

    Vermiform, unsegmented, diploblastic, ciliary feeders

    (d)

    Vermiform, unsegmented, triploblastic, filter feeders

  69. Hermaphrodite organisms are

    (a)

    Hydra, Tape worm, Earthworm, Amphioxus

    (b)

    Hydra, Tape worm, Earthworm, Ascidian

    (c)

    Hydra, Tape worm, Earthworm, Balanoglossus

    (d)

    Hydra, Tape worm, Ascaris, Earthworm

  70. Poikilothermic organisms are

    (a)

    Fish, Frog, lizard, man

    (b)

    Fish, Frog, lizard, cow

    (c)

    Fish, Frog, lizard, snake

    (d)

    Fish, Frog, lizard, crow

  71. Excretory organ of tape worm is

    (a)

    Flame cells

    (b)

    Nephridia

    (c)

    Body surface

    (d)

    Solenocytes

  72. Tube like alimentary canal is found in

    (a)

    Hydra

    (b)

    Earth worm

    (c)

    Starfish

    (d)

    Ascaris

  73. During ecdysis which of the following is shed off

    (a)

    Chitin

    (b)

    Mantle

    (c)

    Scales

    (d)

    Operculum

  74. Cephalization is related to

    (a)

    Head formation

    (b)

    Gut formation

    (c)

    Coelom formation

    (d)

    Gonad formation

  75. The nutrient required in trace amounts to accomplish various body functions is _______________

    (a)

    Carbohydrate

    (b)

    Protein

    (c)

    Vitamin

    (d)

    Fat

  76. The physician who discovered that scurvy can be cured by ingestion of citrus fruits is  ______________

    (a)

    James Lind

    (b)

    Louis Pasteur

    (c)

    Charles Darwin

    (d)

    Isaac Newton

  77. The sprouting of onion and potatoes can be delayed by the process of _______________

    (a)

    irradiation

    (b)

    Irradiation

    (c)

    Salting

    (d)

    Canning

  78. Food and Adulteration Act was enacted by Government of India in the year _______________

    (a)

    1964

    (b)

    1954

    (c)

    1950

    (d)

    1963

  79. An internal factor responsible for spoilage of food is _______________

    (a)

    Wax coating

    (b)

    Contaminated utensils

    (c)

    Moisture content in food

    (d)

    Synthetic preservatives

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

    (a)

    Telescope

    (b)

    Television

    (c)

    Computer

    (d)

    Radio

  81. _________ belongs to the generation IV of the computer

    (a)

    Microprocessor

    (b)

    Artificial intelligence

    (c)

    Transistor

    (d)

    Vaccum Tubes

  82. Data processing involves________ steps

    (a)

    seven

    (b)

    four

    (c)

    six

    (d)

    eight

  83. 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.

  84. True  or False

    15 x 1 = 15
  85. The SI unit of electric current is kilogram

    (a) True
    (b) False
  86. Kilometre is one of the SI units of measurement

    (a) True
    (b) False
  87. In everyday life, we use the term weight instead of mass.

    (a) True
    (b) False
  88. A physical balance is more sensitive than a beam balance as it can accurately measure even a very small mass, even milligram

    (a) True
    (b) False
  89. One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K

    (a) True
    (b) False
  90. The motion of a city bus in a heavy traffic road is an example for uniform motion

    (a) True
    (b) False
  91. Acceleration can get negative value also.

    (a) True
    (b) False
  92. Distance covered by a particle never becomes zero between any interval of time but displacement becomes zero

    (a) True
    (b) False
  93. The velocity – time graph of a particle falling freely under gravity would be straight line parallel to the x axis

    (a) True
    (b) False
  94. If the velocity – time graph of a particle is a straight line inclined to time axis then its displacement – time graph will be a straight line?

    (a) True
    (b) False
  95. The angle of deviation depends on the refractive index of the glass

    (a) True
    (b) False
  96. If the object is at infinity in front of a convex mirror the image is formed at infinity.

    (a) True
    (b) False
  97. The convex mirror always produces a virtual, diminished and erect image of the object.

    (a) True
    (b) False
  98. When an object is at the centre of curvature of concave mirror the image formed will be virtual and erect.

    (a) True
    (b) False
  99. The reason for brilliance of diamonds is mainly due to total internal reflection of light.

    (a) True
    (b) False

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