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#### Full Portion - Important One Mark Question Paper

9th Standard

Reg.No. :
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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)

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)

(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)

(b)

Gut formation

(c)

Coelom formation

(d)

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)

(b)

(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)

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