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

Where the streamlines are very close to each other, the pressure will be

Question # 2

The dimensions of viscosity are:

Question # 3

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 4

Blood vessels can be stretch like rubber, therefore they are

Question # 5

The SI unit of viscosity is

Question # 6

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 7

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 8

Where the streamlines are very far apart from each other, the pressure will be

Question # 9

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 10

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 11

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 12

The body passing a viscous medium affected by:

Question # 13

Substances that flow easily have

Question # 14

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 15

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
2 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
3 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
4 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
5 According to slok's law, drag force depends on
A. Radius of the spherical body
B. Terminal velocity of body
C. Coefficient of viscosity
D. All of above
6 In a normal healthy person the value of diastolic pressure is
A. 75 - 80 torr
B. 100 torr
C. 120 torr
D. none of them
7 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
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 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
10 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
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s

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