#### Term I - Important One Mark Question Paper

9th Standard

Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50

Part A

15 x 1 = 15
1. Rulers, measuring tapes and metre scales are used to measure

(a)

Mass

(b)

Weight

(c)

Time

(d)

Length

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

(a)

(b)

(c)

(d)

3. 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.

4. The field of view * is maximum for ________

(a)

plane mirror

(b)

concave mirror

(c)

convex mirror

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

(a)

Separating funnel

(b)

centrifuge machine

(c)

filter paper

(d)

sieve

6. Filtration method is effective in separating _______ mixture

(a)

Solid-solid

(b)

solid-liquid

(c)

liquid-liquid

(d)

liquid-gas

7. 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

8. 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

9. During photosynthesis plants exhale _______.

(a)

Carbon dioxide

(b)

oxygen

(c)

hydrogen

(d)

helium

10. Dysentery is caused by

(a)

Entamoeba

(b)

Euglena

(c)

Plasmodium

(d)

Paramecium

11. 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

12. Tube like alimentary canal is found in

(a)

Hydra

(b)

Earth worm

(c)

Starfish

(d)

Ascaris

13. 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

14. _________ belongs to the generation IV of the computer

(a)

Microprocessor

(b)

Artificial intelligence

(c)

Transistor

(d)

Vaccum Tubes

15. Part B

15 x 1 = 15
16. Metre is the unit of ________

()

length

17. 1 kg of rice is weighed by ______

()

beam balance

18. Consider an object is rest at position x = 20m. Then its displacement – time graph will be straight line to _____________ the axis.

()

Parallel to

19. In going from a rarer to denser medium, the ray of light bends _________

()

towards the normal

20. Large _________ mirrors are used to concentrate sunlight to produce heat in solar furnaces

()

concave reflector

21. 1500C = __________ K

()

22. Alcohol can be separated from water by _________________

()

fractional distillation

23. Calcium and Argon are examples of a pair of __________

()

isobars

24. The number of neutrons present in $_{ 3 }^{ 7 }{ Li }$ is ------

()

4

25. __________ is positively hydrotropic as well as positively geotropic.

()

Root

26. Plants inhale and exhale continuously through the __________.

()

Stomata

27. The excretory opening of Porifera is________

()

Ostia

28. Blue revolution is the rearing of ______________.

()

Fishes

29. Deficiency diseases can be prevented by taking _______________ diet.

()

balanced

30. The process of affecting the natural composition and the quality of food substance is known as _______________

()

31. Part C

10 x 1 = 10
32. Motion with non uniform acceleration

33. (1)

Positive geotropism

34. Constant retardation

35. (2)

Osteoporosis

36. Coin inside water appearing slightly raised

37. (3)

refraction

38. Used as Dentist’s mirror

39. (4)

1.6 x 10-19C

40. Mass of electron

41. (5)

II generation

42. Charge of proton

43. (6)

9.31 x 10-28g

44. Roots growing downwards into soil

45. (7)

46. Calcium

47. (8)

Muscular fatigue

48. Potassium

49. (9)

50. Transistor

51. (10)

magnification

Part D

10 x 1 = 10
52. One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K

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

(a) True
(b) False
54. 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
55. An object is placed at distance of 3 cm from a plane mirror. The distance of the object and image is 3 cm.

(a) True
(b) False
56. The distance from centre of curvature of the mirror to the pole is called the focal length of the mirror.

(a) True
(b) False
57. Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.

(a) True
(b) False
58. Electrons have negligible mass and charge.

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

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

(a) True
(b) False
61. Vitamins are required in large quantities for normal functioning of the body -

(a) True
(b) False