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#### Term 1 Model Questions

9th Standard

Reg.No. :
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Science

Time : 02:00:00 Hrs
Total Marks : 60
6 x 1 = 6
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. Which of the following graph represents uniform motion of a moving particle

(a)

(b)

(c)

(d)

3. 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

4. Among the following______is a mixture

(a)

Common Salt

(b)

Juice

(c)

Carbon dioxide

(d)

Pure Silver

5. Dysentery is caused by

(a)

Entamoeba

(b)

Euglena

(c)

Plasmodium

(d)

Paramecium

6. Data processing involves________ steps

(a)

seven

(b)

four

(c)

six

(d)

eight

7. 5 x 1 = 5
8. Metre is the unit of ________

()

length

9. Negative acceleration is called ____________

()

retardation

10. The mirror used in search light is ________ .

()

Concave

11. 1500C = __________ K

()

12. The binomial name of our National Bird is ______________.

()

Pavo cristatus

13. 5 x 1 = 5
14. Distance covered by a particle never becomes zero between any interval of time but displacement becomes zero

(a) True
(b) False
15. 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
16. In an atom, electrons revolve around the nucleus in fixed orbits

(a) True
(b) False
17. The petals of moon flower open up in morning and closes in the evening. This is called photonasty.

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

(a) True
(b) False
19. 5 x 1 = 5
20. Vernier caliper

21. (1)

22. Uniform acceleration

23. (2)

Pure substance

24. Used in hairpin bends in mountains

25. (3)

total internal reflection

26. Mixture

27. (4)

Cricket ball

28. Coelenterata

29. (5)

Hydra

7 x 2 = 14
30. Define standard unit.

31. The speed of light in air is 3 $\times$ 108ms-1 and in glass it is 2 $\times$ 108ms-1 what is the refractive index of glass

32. Define Sublimation

33. Copy the following and write the names of the laws and their simple definitions in the space provided.

34. Fill in the blanks:
6CO2+________$\overset { Sunlight }{ \underset { Chlorophyll }{ \longrightarrow } }$ _____ +6H2O+6O2 $\uparrow$

35. What is acrania?

36. Differentiate : Macronutrients from micronutrients

37. 5 x 3 = 15
38. Write the rules that are followed in writing the symbols of units in SI system.

39. Define velocity?

40. An object 2 cm high is placed at a distance of 16 cm from a concave mirror which produces a real image 3 cm high. Find the position of the image.

41. What is meant by Rf value?

42. Differentiate between flat worms and round worms?

43. 2 x 5 = 10
44. Explain a method to find the thickness of a hollow tea cup.

45. Explain the role of food control agencies in India.