# AP 9th Physical Science Mock test 2021 for Chapter-8 :”Floating bodies” Online Practice Test

1. MKS unit of density is
2. Buoyant force on an object due to fluid always acts ............
3. Buoyant force acting on a body due to different fluids is
4. 1 atmosphere =
5. Instrument used to measure relative density of milk
6. The formula to find atmospheric pressure,
7. Instrument used to measure atmospheric pressure
8. Hydraulic jack works on the principle of
9. The height of mercury column in barometer at sea level
10. The magnitude of the buoyant force depends upon
11. Weight(w) of a body of mass 'm' and if acceleration due to gravity is 'g' is =
12. The atmospheric pressure in terms of height of mercury column(in cms)
13. The force applied on the object immersed in liquid in upward directions is called
14. By the conditions of floatation, if and are the densities of liquid in which a hydrometer skills to depths of and respectively, which of the following is true ?
15. The effective density of adulterated milk is given by =
16. Density : :: relative density : .......................
17. An object that flows on water is ..................
18. Which will weight more (i) A quintal of iron scrap or (ii) a quintal cotton ?
19. A body weights more in
20. Find the odd one out regarding the construction of hydraulic jack
21. The lightest material among the following
22. The scientists who discovered that "Apparent loss of weight of a body in a liquid is equal to the weight of liquid displaced" is ................
23. Formula for finaling density of substance
24. Units of relative density
25. The instrument used to find the purity of milk
26. The volume of iron nail whose mass is 21.6 g and density is 7.2 is
27. Density of mercury in C.G.S system is
28. Units of pressure in S.I system
29. One Newton =
30. Mass of a body of weight 'w' is given by
31. Units of force =
32. Choose the correct matching for the following
1. Density                                      (   )          a. Newton
2. Relative density                       (   )          b. Pascal
3. Pressure                                    (   )          c. No units
4. Force                                          (   )          d.
33. if we throw the same size of a glass marble and a wooden piece in water ,glass marble only sinks because
34. The process of comparing the density of an object with the density of ________ is called relative density of that object.
35. To find relative density of an object we have to measure ___________
36. The instrument used to measure density of any liquid is
37. The effective density of the mixture of liquids =
38. The substance with relative density greater than 1 ______
39. All the substances with relative density _______ sink in water, some times they may float in rare cases
40. Mass =
41. Lifts works on the basis of the following principle
42. The pressure exerted by a liquid increases with _______ below the surface of liquid
43. All objects experience a force of buoyancy when ___________
44. Objects having the density less than the liquid in which they immersed _________
45. When an object is immersed in a fluid it appears to ___________
46. When an object is immersed in a fluid it appears to loss weight because of
47. The apparent loss of weight of an object, which is immersed in a liquid is equals to ______
48. The apparent loss of weight of an object, which is immersed in a liquid is equal to the weight of liquid displaced by the object. It is the principle of ______
49. When an object floats on the surface of a liquid it displaces a weight of liquid equal to _______
50. Theory of floating substances is identified for first time by ______
51. If the gravitation force acts on the object placed in a water container is more than upward force of water the object will _____
52. If the gravitation force acts on the object placed in a water container is less than upward force of water the object will _____
53. Static pressure of water is defined as the force acting on ___________
54. If we immerse tumbler with cotton stuck at bottom inversely in a container with full of water, no wet we observed inside the tumbler. This is because of the _______
55. The first barometer was invented by
56. The first barometer was invented by Torricelli using _______
57. Mercury level in barometer at normal atmospheric pressure is equals to
58. What is the state of mercury column in the tube of barometer ?
59. Net force acts on mercury column inside the barometer is _____
60. The _________ in barometer is equals to force applied on it by mercury due to atmospheric pressure.
61. Weight of mercury level in barometer =
62. Density of the mercury () =
63. The forces acting on water column are
64. The pressure inside the liquid at a constant depth is ______
65. The pressure difference between two levels in a fluid =
66. The pressure difference increases in a fluid with _____
67. The force applied on the object in upward direction is called ______
68. Buoyant force is equal to the __________
69. The following material is not required to measure force of buoyancy experiment _______
70. The apparent loss of weight must be equal to
71. Archimedes was a ________
72. Eureka is a Greek word used by _______ which means "I found it"
73. When a force is applied to left piston the excess pressure acting on the fluid volume is
74. The excess pressure in the right side tube of Bramah press is equals to
75. The application of Pascal's principle results in a large upward force on the right piston when a ________
76. Which principle helps us to measure purity of gold ?
77. This principle is used to measure density of liquids
78. These materials worked on the basis of principle of Archimedes
79. Design of ship involves the following principle ?
80. Pressing the oil seeds involves the following principle
81. The relative density of water melon is
82. The relative density of lemon is
83. The relative density of papaya is
84. The relative density of tomato is
85. The relative density of onion is
86. The relative density of wood is
87. The relative density of ice is
88. The relative density of iron is
89. The relative density of copper is
90. The relative density of gold is
91. The relative density of milk is
92. The relative density of mercury is
93. The relative density of pure water is
94. The relative density of petrol is
95. The relative density of kerosene is
96. The relative density of coconut oil is
97. The relative density of rubber is
98. The units of relative density are
99. Pascal's principle is applied for
100. Barometer was invented by Torricelli in the year