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

Matter is made up of very tiny particles called

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 drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:

Question # 4

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 5

Which of the following has the greatest coefficient of viscosity?

Question # 6

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

Question # 7

According to slok's law, drag force depends on

Question # 8

The electrical forces between the molecules of a liquid are

Question # 9

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 # 10

The irregular and unsteady flow of the fluid is called

Question # 11

In a normal healthy person the value of diastolic pressure is

Question # 12

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 13

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

Question # 14

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

Question # 15

Internal friction of fluid is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
2 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
3 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
4 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
5 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
6 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
7 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids
8 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
9 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
10 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline

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