ECAT Pre General Science Physics Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

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

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ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

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Question # 1

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 # 2

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 3

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 4

The density of blood is nearly equal to that of

Question # 5

The mass of fluid passing through any cross-section per unit time is called

Question # 6

Blood has a density

Question # 7

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

Question # 8

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 9

The law of conservation of energy gives us

Question # 10

A device used to measure the speed of liquid flow is known as

Question # 11

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

Question # 12

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

Question # 13

During the steady flow, different streamlines

Question # 14

Which of the following has the greatest coefficient of viscosity?

Question # 15

The property of fluids due to which they resist their own flow is called:

Question # 16

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

Question # 17

Machine parts are jammed due to:

Question # 18

The analysis of fluid motion becomes simplified by using

Question # 19

Internal friction of fluid is called

Question # 20

When each particle of the fluid moves along a smoth path, this path is known as

Question # 21

In a normal healthy person the value of diastolic pressure is

Question # 22

In a normal healthy person the value of systolic pressure is

Question # 23

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

Question # 24

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 25

Surface tension of water is due to

Question # 26

Bernoulli's equation is based upon law of conversation

Question # 27

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 28

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 29

Bernoulli's equation is based upon law of conservation

Question # 30

The value of viscosity of a fluid is dependent on (at constant temperature)

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
2 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
3 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
4 Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball
5 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
6 The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
7 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
8 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
9 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
10 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these

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