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

The law of conservation of mass gives us the

Question # 2

The rain drop falling from the sky reach the ground with

Question # 3

Unit of viscosity is:

Question # 4

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

Question # 5

Substances that do not flow easily have

Question # 6

Surface tension of water is due to

Question # 7

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

Question # 8

Fluid friction is _____ the friction between two solid surfaces:

Question # 9

A massive object falls through a fluid:

Question # 10

Blood pressure is measured by the instrument

Question # 11

A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is

Question # 12

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

Question # 13

With the increase of temperature viscosity

Question # 14

When the speed of a body in a fluid increases then the drag force

Question # 15

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
2 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
3 The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
4 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
5 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
6 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all of them
7 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
8 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
9 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
10 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid

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