ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

The law of conservation of energy gives us

Question # 2

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 3

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 4

Which of the following has the greatest coefficient of viscosity?

Question # 5

Viscosity is defined as

Question # 6

A massive object falls through a fluid:

Question # 7

The application of Bernoulli's equation is

Question # 8

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 9

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 10

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 11

A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is

Question # 12

The smooth or steady streamline flow is known as

Question # 13

The irregular and unsteady flow of the fluid is called

Question # 14

In a normal healthy person the value of diastolic pressure is

Question # 15

Substances that flow easily have

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
2 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
3 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
4 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
5 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
6 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
7 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
8 In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of
A. 0.1 m
B. 0.2 m
C. 0.98 m
D. Full length of the capillary tube
9 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
10 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these

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