#### Centum Questions

6th Standard

Reg.No. :
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Science

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

PART - A

57 x 1 = 57
1. How will you measure your height with the unit?

(a)

Kilogram

(b)

Litre

(c)

Metre

(d)

Second

2. The distance between one end and other end is called ___________.

(a)

mass

(b)

length

(c)

time

(d)

None

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

(a)

Clock

(b)

Watch

(c)

Stop clock

(d)

Measuring

4. Five kilometre is equal to_____________

(a)

500 cm

(b)

500 m

(c)

5000 m

(d)

5000 cm

5. Volume of solid is_________

(a)

m2

(b)

m

(c)

m3

(d)

none

6. Twenty decimetre is equal to_________

(a)

2 km

(b)

20 cm

(c)

2 metre

(d)

20 metre

7. Volume of liquid is usually measured___________

(a)

litres

(b)

grams

(c)

nano

(d)

kilo

8. _____________is used to measure mass.

(a)

Stop clock

(b)

Beam balance

(c)

electronic balance

(d)

9. The matric system of units was created by the________in 1790.

(a)

Italy

(b)

Australia

(c)

Russia

(d)

French

10. The moon's gravitational pull is one_____________of the earth's pull.

(a)

seventh

(b)

sixth

(c)

Fifth

(d)

Fourth

11. __________is an ancient Indian astronomer

(a)

C.V. Raman

(b)

Aryabatta

(c)

Usain Bolt

(d)

Edison

12. People walking in a crowded street is example of_________motion

(a)

linear

(b)

circular

(c)

rotatory

(d)

zigzag

13. Periodic motion among the following is___________

(a)

sabling swing in wind

(b)

revolution of the moon around the earth

(c)

a coconut falling from a tree

(d)

paper flight moving

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

(a)

9.58

(b)

9.83

(c)

9.85

(d)

9.38

15. _________________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

16. A___________ is the fastest land animal

(a)

Horse

(b)

Lion

(c)

Cheetah

(d)

Tiger

17. A cheetah running with an average speed of_____________

(a)

112 kmIh

(b)

121 km/h

(c)

211 km/h

(d)

122 km/h

18. All the matter made of __________

(a)

Particles

(b)

Atoms

(c)

Elements

(d)

Mixture

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

(a)

Thousands

(b)

Crores

(c)

Lakhs

(d)

Million

20. A drop of water contains about____________ water particles.

(a)

1021

(b)

1012

(c)

1022

(d)

1020

21. One dot that you make with Your pen has more than ___________ Lakh Molecule

(a)

One

(b)

Two

(c)

Four

(d)

Three

22. ____________has definite shape and volume.

(a)

Solid

(b)

Liquid

(c)

Gas

(d)

None

23. The space between ____________ particles is the greatest one.

(a)

solid

(b)

liquid

(c)

gas

(d)

cold

24. Removing grains from stalks __________ method is used

(a)

Winnowing

(b)

Sieving

(c)

Churning

(d)

Threshing

25. Very tiny insoluble solid separated from a liquid is__________

(a)

Winnowing

(b)

Churning

(c)

Sieving

(d)

Filtration

26. __________is a smallest particle

(a)

Molecule

(b)

Element

(c)

Atom

(d)

Substance

27. We mix rice, dal, salt, chillies, pepper, ghee and other ingredients to make pongal. So pongal is also a ___________

(a)

Mixture

(b)

Compound

(c)

Element

(d)

Matter

28. ___________ is a natural science concerned with study of life and living organisms.

(a)

Chemistry

(b)

Biology

(c)

Zoology

(d)

Physics

29. The underground part of the main axis of a plant is known as_________.

(a)

shoot

(b)

node

(c)

root

(d)

leaf

30. Main axis of the shoot system is called____________.

(a)

stem

(b)

root

(c)

Leaf

(d)

buds

31. On the lower side of the leaf there are tiny pores or openings known as ____________

(a)

Leaf base

(b)

mid rib

(c)

petiole

(d)

stomato

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

(a)

October

(b)

November

(c)

September

(d)

December

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

(a)

Mango

(b)

Neem

(c)

Hibiscus

(d)

Bamboo

34. ___________ is the longest river in the world.

(a)

Sutlej

(b)

Yellow

(c)

Nile

(d)

Congo

35. Length of Nile river is_____________

(a)

6560 km

(b)

6650 km

(c)

6506 km

(d)

5606 km

36. Air spaces in stems and petioles of ___________ plant are useful for floating in water.

(a)

lotus

(b)

water lily

(c)

water hyacinth

(d)

Agare

37. The first land plants are____________

(a)

Neem tree

(b)

hibiscus'

(c)

banyan tree

(d)

mosses and liver worts

38. The __________ forest in South America produces half of the world's oxygen supply.

(a)

Taiga

(b)

Congo rain

(c)

Amazon rain

(d)

Darin tree

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

(a)

Plants

(b)

Birds

(c)

Air

(d)

Elephant

40. Polar bear and Penguins dwell in___________.

(a)

Cold region

(b)

Hot region

(c)

Cold and Hot region

(d)

Forest region

41. Jurong Birds park located in__________.

(a)

America

(b)

Singapore

(c)

Japan

(d)

Germany

42. Euglena moves with the help of__________.

(a)

Flagellum

(b)

Cilia

(c)

Pseudopodia

(d)

Legs

43. Lizards are walk with four legs and is known as

(a)

Bipedal

(b)

Tripedal

(c)

Monopedal

(d)

44. Among the following which one is Bird Sanctuary located in Tamilnadu___________.

(a)

(b)

Guindy Park

(c)

Vedanthangal

(d)

All

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

(a)

Hibernation

(b)

Aestivation

(c)

Migration

(d)

46. ____________can live for many days without drinking water.

(a)

Dog

(b)

Elephant

(c)

Cow

(d)

Camel

47. Camel passes___________amount of urine.

(a)

small

(b)

large

(c)

moderate

(d)

too large

48. _______are more energy giving component of the food .

(a)

Fat

(b)

Vitamins

(c)

Protein

(d)

Water

49. _____________is the highly rich source of protein

(a)

nuts

(b)

grams

(c)

chicken

(d)

soya bean

50. Among the Vitamins which one is the water soluble Vitamin

(a)

Vitamin A

(b)

Vitamin B

(c)

Vitamin D

(d)

Vitamin E

51. Beri Beri is caused due to the deficiency of________

(a)

Vitamin C

(b)

Vitamin D

(c)

Vitamin K

(d)

Vitamin B

52. _________is made in our skin using sunlight

(a)

Vitamin D

(b)

Vitamin C

(c)

Vitamin A

(d)

Vitamin B

53. _________are required for growth as well as for the regulation of normal body function.

(a)

Fat

(b)

Protein

(c)

Carbohydrate

(d)

Minerals

54. 80% of the world production of Moringa leaves is___________

(a)

China

(b)

Germany

(c)

India

(d)

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

(a)

2 liters

(b)

3 liters

(c)

8 liters

(d)

6 liters

56. ___________is the bacterial disease, it transit through containination of wounds wit" the bacteria.

(a)

Cholera

(b)

Tetanus

(c)

Typhoid

(d)

Pneumonia

57. ___________is an a-cellular agent that replicates only inside the cells ofthe other living organism.

(a)

Bacteria

(b)

Protozoa

(c)

Fungi

(d)

Virus

58. PART -  B

35 x 1 = 35
59. Kerosene is measuring with the help of graduated cylinder.

60. Length is a fundamental quantity.

61. On moon where the gravitational force is greater than earth.

62. A ruler or scale used nowadays to measure length was invented by william Bedwell

63. Length, mass and time are some of the derived quantities.

64. National physical laboratory is located in Delhi.

65. Motion occurs when the object is pulled or pushed by an agency

66. Force is executed by touching the body is called non - contact force

67. Motion repeated in equal intervals of time is called as periodic motion

68. Gas like state of Matter that exists at extremely cold temperatures used in the field of cryogenics.

69. The Particles of matter one extremely small and it can be seen even with a powerful microscope

70. The Cow and Birds are nonliving things.

71. The feather and paper cup can float on the water.

72. The force of attraction between liquid particles is more than solid particles.

73. Gases have neither a definite shape nor a definite volume.

74. Water particles have no space between them.

75. Liquid is affected by gravity less than anything.

76. The living world comprises of plants and animals.

77. The buds at the axils of the leaves are called terminal buds.

78. In case of sugarcane food-is stored in the stem region.

79. The longest river in India is Ganges river.

80. The Amazon rain forest in Canada produces half ofthe world's oxygen supply.

81. Fishes are unicellular organism.

82. In Amoeba, reproduction is by simple diffusion through the body surface.

83. In unicellular organisms, the growth occurs by an increase in the size of the cell.

84. The streamlined body shape of fishes helps to move through water easily.

85. Some fishes have the capacity to rotate the head around the head joint.

86. Animal moves its location as the season changes its said to be adaptation.

87. Spending the hot and dry period in an inactive state is known as Aestivation.

88. Minerals are required for carrying out various biochemical reactions in our body.

89. Night blindness is a disease due to deficiency of Vitamin A..

90. Vitamin D abundantly found in orange and gooseberry

91. Sun screen lotion reduces ability to produce Vitamin D. It leads to Vitamin D deficiency diseases

92. Phosphorus helps in strong bones, teeth and clotting of blood.

93. Moringa leaves are rich·in the minerals potassium, Cacium and Iron

94. PART - C

1 x 2 = 2
95. PART - D

3 x 2 = 6
96. Mention the two types of softwares.

97. Give any two examples of operating software

98. Mention any two output devices