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 a small size spherical body of radius R moving in a fluid varies as

Question # 2

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

Question # 3

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 4

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

Question # 5

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 # 6

The fluid is incompressible, if itsdensity is

Question # 7

The electrical forces between the molecules of a liquid are

Question # 8

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 9

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 10

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

Question # 11

One torr is equal to

Question # 12

Pressure exerted by a gas on the walls of its container in due to

Question # 13

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

Question # 14

The equation of continuity
A1V1= A2V2is for the flow of

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
2 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
3 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
4 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
5 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
6 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
7 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
8 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
9 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
10 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved

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