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

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

Question # 3

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

Question # 4

Substances that do not flow easily have

Question # 5

Fluid friction is _____ the friction between two solid surfaces:

Question # 6

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

Question # 7

The flow of an ideal fluid is

Question # 8

A massive object falls through a fluid:

Question # 9

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 10

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

Question # 11

Rate of flow can be expressed in

Question # 12

During the steady flow, different streamlines

Question # 13

The dimensions of viscosity are:

Question # 14

The fluid is incompressible, if itsdensity is

Question # 15

0.10 cm can be written as:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
2 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
3 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
4 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
5 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
6 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
7 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
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 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
10 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight

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