#### Term 1 One Marks Model Questions

9th Standard

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Science

Time : 01:00:00 Hrs
Total Marks : 50
15 x 1 = 15
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. Distance between Chennai and Kanyakumari can be found in

(a)

Kilometres

(b)

Metres

(c)

Centimetres

(d)

Millimetres

3. Slope of the velocity - time graph gives

(a)

speed

(b)

displacement

(c)

distance

(d)

acceleration

4. Unit of acceleration is

(a)

ms-1

(b)

ms-2

(c)

ms

(d)

ms2

5. The field of view * is maximum for ________

(a)

plane mirror

(b)

concave mirror

(c)

convex mirror

6. A virtual and equal sized image is formed by ___________________mirrors.

(a)

convex

(b)

plane

(c)

convex

(d)

spherical

7. Among the following______is a mixture

(a)

Common Salt

(b)

Juice

(c)

Carbon dioxide

(d)

Pure Silver

8. 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

9. 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

10. Transpiration takes place through _____________.

(a)

fruit

(b)

seed

(c)

flower

(d)

stomata

11. Which is not an insect?

(a)

House fly

(b)

Bedbug

(c)

Mosquito

(d)

Spider

12. Crop, gizzard and air sacs are seen in

(a)

Fish

(b)

Frog

(c)

Bird

(d)

Bat

13. Find the correct sequence

(a)

Frog $\longrightarrow$ Fish $\longrightarrow$ Snake $\longrightarrow$ Dove $\longrightarrow$ Lion

(b)

Fish $\longrightarrow$ Snake $\longrightarrow$ Frog $\longrightarrow$ Lion $\longrightarrow$ Dove

(c)

Fish $\longrightarrow$ Snake $\longrightarrow$ Frog $\longrightarrow$ Lion $\longrightarrow$ Crow

(d)

Fish $\longrightarrow$ Frog $\longrightarrow$ Snake $\longrightarrow$ Dove $\longrightarrow$ Lion

14. 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

15. _________ belongs to the generation IV of the computer

(a)

Microprocessor

(b)

Artificial intelligence

(c)

Transistor

(d)

Vaccum Tubes

16. 15 x 1 = 15
17. The thickness of a cricket ball is measured by _______

()

Vernier Caliper

18. The slope of the distance – time graph at any point gives __________

()

the constant speed

19. Area under velocity ‒ time graph shows ____________

()

distance travelled by an object

20. The graph of uniform motion is _____

()

Straight line

21. The angle of deviation of light ray in a prism depends on the angle of _________

()

incident

22. A _____mixture has no distinguishable boundary between its components

()

homogeneous

23. The particles start moving faster as their kinetic energy_____

()

increases

24. Total Number of electrons that can be accommodated in an orbit is given by-------

()

2n2

25. In Gay Lussac's law all the volumes are measured under similar conditions of ___________and__________

()

Temperature,pressure

26. Photosynthesis : ____________ Transpiration : Stomata

()

27. The plant respond to gravity is_________________.

()

geotropism

28. Myotomes are seen in ______________

()

Fishes

29. Flat worms are ______________

()

Acoelomates

30. Vitamin D is called as _______________ vitamin as it can be synthesised by the body from the rays of the sun.

()

sunshine

31. Glucose is a _______

()

monosaccharide

32. 10 x 1 = 10
33. The SI unit of electric current is kilogram

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

(a) True
(b) False
35. Light is one of the slowest travelling energy with a speed 3 $\times$10-8 ms-1

(a) True
(b) False
36. Water has a definite boiling point and freezing point.

(a) True
(b) False
37. Milk is an example of an emulsion of fat and curd

(a) True
(b) False
38. Smaller the size of the orbit, lower is the energy of the orbit

(a) True
(b) False
39. Scientific term used to represent the bending of roots towards water is called geotropism.

(a) True
(b) False
40. Nephridia are the respiratory organ of Annelida

(a) True
(b) False
41. Fishes have two chambered heart.

(a) True
(b) False
42. ISI mark is mandatory to certify agricultual products

(a) True
(b) False
43. 10 x 1 = 10
44. Time

45. (1)

Kelvin

46. Mass

47. (2)

At C - Same size, Real, inverted

48. Uniform acceleration

49. (3)

Anaemia

50. Cream

51. (4)

Constant temperature

52. At C

53. (5)

Positive phototropism.

54. Boiling

55. (6)

56. Charge of electron

57. (7)

Matter

58. Shoots growing towards the light

59. (8)

II generation

60. Iron

61. (9)

-1.6 x 10-19C

62. Transistor

63. (10)

outer wall