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

Liquids and gasses have

Question # 2

When a fluid is in motion, its flow can be considered as

Question # 3

High speed meteors rushing through air reduces to ashes because of:

Question # 4

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 5

A high concentration of red blood cells increases its viscosity from

Question # 6

The study of fluid in motion basically involves law of conservation of:

Question # 7

When a water droplet falls through air, the net force on it is

Question # 8

The smooth or steady streamline flow is known as

Question # 9

The analysis of fluid motion becomes simplified by using

Question # 10

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

Question # 11

According to the Bernoulli's theorem the pressure velocity are

Question # 12

The velocity of falling raindrop attains limited value because of

Question # 13

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

Question # 14

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 15

Above a certain velocity of a fluid is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
2 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
3 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
4 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
5 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
6 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
7 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
8 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow
9 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
10 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them

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