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

According to slok's law, drag force depends on

Question # 2

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 3

Which of the following has the greatest coefficient of viscosity?

Question # 4

Above a certain velocity of a fluid is called

Question # 5

A massive object falls through a fluid:

Question # 6

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

Question # 7

Liquids and gasses have

Question # 8

A device used to measure the speed of liquid flow is known as

Question # 9

The body passing a viscous medium affected by:

Question # 10

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 # 11

Surface tension of water is due to

Question # 12

In case of streamed lined flow of liquid, the loss of energy is

Question # 13

The smooth or steady streamline flow is known as

Question # 14

What are the SI base units of the coefficient of viscosity

Question # 15

Matter is made up of very tiny particles called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
2 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
3 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
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 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
6 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
7 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
8 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
9 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
A. 1 cm
B. 2 cm
C. 8 cm
D. None
10 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles

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