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 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

Question # 2

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 3

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 # 4

Glycerin has viscosity _____ the viscosity of water:

Question # 5

In Bernoulli's theorem the relation between velocity and pressure is

Question # 6

The SI unit of viscosity is

Question # 7

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 # 8

The rain drop falling from the sky reach the ground with

Question # 9

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 # 10

In a normal healthy person the value of diastolic pressure is

Question # 11

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

Question # 12

Blood is an

Question # 13

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 14

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
2 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
3 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
4 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
5 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
6 When a fluid is in motion, its flow can be considered as
A. turbulent
B. streamline
C. either or them
D. neither of them
7 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
8 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
9 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
10 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them

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