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

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?

Question # 2

What are the SI base units of the coefficient of viscosity

Question # 3

The velocity of falling raindrop attains limited value because of

Question # 4

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 5

The dimensions of viscosity are:

Question # 6

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

Question # 7

At high altitude the blood oozes out of the nose and ear because

Question # 8

Surface tension of water is due to

Question # 9

The unit of viscosity is SI system is:

Question # 10

In a normal healthy person the value of systolic pressure is

Question # 11

The blood pressure of a person

Question # 12

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

Question # 13

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 14

The un-steady streamline flow is called

Question # 15

Fog droplets are suspended in air when their weight is balanced by:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
2 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these
3 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
4 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
5 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
6 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
7 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
8 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
9 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
10 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air

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