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Fluid stat Concepts

Total questions: 28

Worksheet time: 29mins

Name
Class
Date
1.

International unit (SI) of density is,

a)

g ml⁻¹

b)

g cm-3

c)

kg m-3

d)

kg cm-3

2.

Four different liquids have equal masses of 8000 kg each. The volumes of them are given below.

Liquid A - 12 m3

Liquid B - 10 m3

Liquid C - 8 m3

Liquid D - 6 m3

The liquid that has the highest density is

a)

A

b)

B

c)

C

d)

D

3.

Four different liquids have an equal volume of 0.5 m3 each. the masses of these liquids are given here

Liquid P - 400 kg

Liquid Q - 500 kg

Liquid R - 550 kg

Liquid S - 600 kg

The liquid that has the highest density is

a)

P

b)

Q

c)

R

d)

S

4.

Consider the following statements on the density of a liquid

A. Density of a liquid depends on its mass.

B. Density of a liquid depends on its volume.

C. Density of a liquid depends on the kind of liquid.

a)

Only A

b)

Only B

c)

Only C

d)

Only A and B

e)

Only B and C

5.

When a fluid fills a closed container, it exerts pressure

a)

only on the bottom of the container

b)

only on the sides of the container

c)

only on particles within the fluid

d)

everywhere inside the container

6.
The pressure of water exerted on the fishes is PX, PY and PZ respectively.
Which comparison is correct about the pressure exerted on the fishes?
a)
PZ > PY > PX 
b)
PZ = PX < PY
c)
PZ = PX > PY
d)
PZ < PX < PY
7.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
8.

The upward force exerted by a fluid is called the...

a)

buoyancy force

b)

density force

c)

fluidity force

d)

normal force

9.
Fluid pressure is directed
a)
in all directions.
b)
only upward.
c)
only downward.
d)
always sideways.
10.
When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called________.
a)
Pascal's Principle
b)
Newton's Principle
c)
Archimedes' Principle
d)
Bernoulli's Principle
11.

SI unit of pressure is

a)

N m2

b)

N m-2

c)

P a

d)

W

e)

Pa

12.
Hydraulic car brakes allow you to apply a little force so that the brakes apply a large force over a short distance as described by
a)
Aristotle
b)
Bernoulli
c)
Boyle
d)
Pascal
13.

The figure shows four liquids that have equal masses kept in identical containers. The correct answer with ascending order of densities is

a)

K > L > M > N

b)

N > L > M > K

c)

N > M > K > L

d)

N > K > M > L

14.

The figure shows four identical hydrometers floating on four different liquids. Then the liquid with the highest density is,

a)

T

b)

U

c)

V

d)

W

15.

Pressure is a

a)

Vector

b)

Scaler

16.

Hydrostatic pressure is caused by

a)

The weight of the liquid above

b)

Atmospheric pressure

c)

Inter molecular forces

d)

The motion of fluid particles.

17.

"Pressure is always acting in the direction of the force that causes the pressure." This statement is

a)

Correct

b)

Wrong

18.

Hydrostatic pressure has no direction.

a)

Correct

b)

Wrong

19.

The pressure at a certain point in a liquid depends on the height of the liquid column above that point.

a)

Correct

b)

Wrong

20.

The pressure at the same level of a liquid is the same.

a)

Correct

b)

Wrong

21.

Liquid pressure depends on the vertical height of the liquid column. It does not depend on the shape of the liquid column.

a)

Correct

b)

Wrong

22.

Archimedes principle says that.

a)

When an object is submerged in a fluid, the up-thrust acting on it is equal to the weight of the object.

b)

When an object is completely submerged in a fluid, the up-thrust acting on it is equal to the weight of the object.

c)

When an object is partially or completely submerged in a liquid, the up-thrust acting on it is equal to the weight of the liquid displaced by the object.

d)

When an object is partially or completely submerged in a fluid, the up-thrust acting on it is equal to the weight of the fluid displaced by the object.

23.

When an object of volume V is fully immersed in a liquid of density d, the up-thrust on it is equal to,

a)

vd

b)

vdg

c)

vdg\frac{vd}{g}  

d)

dgv\frac{dg}{v}  

e)

vgd\frac{vg}{d}  

24.

For an object to float on water

a)

Up-thrust is equal to the weight only if it is fully submerged.

b)

Up-thrust is less than weight when it is partially submerged.

c)

Weight is equal to the up-thrust on it

25.

An incompressible liquid is trapped by two pistons as shown below. According to the given data force F has a magnitude.

a)

100 N

b)

200 N

c)

300 N

d)

400 N

e)

500 N

26.

The physical principle that can be used to explain the action of the hydraulic jack is

a)

Archimedes Principle

b)

Torricelli Theorem

c)

Pascal's Principle

d)

Hoist theorem

e)

Bernoulli's theorem

27.

The atmospheric pressure is capable of holding a mercury column of approximate height (at the sea level)

a)

16 cm

b)

36 cm

c)

56 cm

d)

74 cm

e)

76 cm

28.

Three holes are made on the wall of the water container shown in the figure. Four students predict the water flow from holes as shown in four answer choices. Which of them is correct?

a)
b)
c)
d)