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

Blood is an

Question # 2

A body is floating in a liquid. The up thrust on the body is

Question # 3

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 4

Machine parts are jammed due to:

Question # 5

At low speeds, the drag force is

Question # 6

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 7

Surface tension of water is reduced by adding

Question # 8

The term Brownian movement refers to

Question # 9

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 10

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 11

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

Question # 12

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 # 13

The pressure will be low where the speed of the fluid is

Question # 14

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

Question # 15

The law of conservation of mass gives us the

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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 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
3 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
4 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
5 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
6 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
7 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
8 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
9 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
10 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them

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