Mechanical Properties of Fluids Test

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Mechanical Properties of Fluids Test - 4

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Weekly Quiz Competition

Question 1
4 / -1

A glass capillary of radius 0.4 mm is inclined at 60° with the vertical in water. Find the length of water in the capillary tube. (surface tension of water = 7 × 10^-2 N / m).

A
7.1 cm

B
3.6 cm

C
1.8 cm

D
0.9 cm
Question 2
4 / -1

If the length of tube is less and cannot accommodate the maximum rise of liquid, then

A
liquid will form fountain

B
liquid will not rise

C
the meniscus will adjust itself so that the water does not spill

D
None of the above
Question 3
4 / -1

Water is filled in a container upto height 3m. A small hole of area ‘a’ is punched in the wall of the container at a height 52.5 cm from the bottom. The cross sectional area of the container is A. If a/A = 0.1 then v² is (where v is the velocity of water coming out of the hole)

A
50

B
51

C
48

D
51.5
Question 4
4 / -1

Angle of contact of a liquid with a solid depends on

A
solid only

B
liquid only

C
both on solid and liquid

D
orientation of the solid surface in liquid
Question 5
4 / -1

Which one of the following equation is Torricelli\'s law?

A
p = ρgh

B

C
ηRe = ρvd

D
S ( 2d l ) = Fd
Question 6
4 / -1

The terminal velocity of spherical ball of radius a falling through a viscous liquid is proportional to

A
a

B
a²

C
a³

D
a^-1
Question 7
4 / -1

Streamline flow is more likely for liquids with

A
high density and low viscosity

B
low density and high viscosity

C
high density and high viscosity

D
low density and low viscosity
Question 8
4 / -1

Bernoulli's theorem is a consequence of the law of conservation of

A
momentum

B
mass

C
energy

D
angular momentum

Solution
Question 9
4 / -1

At what speed, the velocity head of water is equal to pressure head of 40 cm of Hg?

A
10.3 ms ^-1

B
2.8 ms ^-1

C
5.6 ms ^-1

D
8.4 ms ^-1
Question 10
4 / -1

Water falls from a tap, down the streamline

A
area decreases

B
area increases

C
velocity remains same

D
area remains same

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Re-Attempt Weekly Quiz Competition

Mechanical Properties of Fluids Test - 4

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Mechanical Properties of Fluids Test - 4

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Question 1

7.1 cm

3.6 cm

1.8 cm

0.9 cm

Question 2

liquid will form fountain

liquid will not rise

the meniscus will adjust itself so that the water does not spill

None of the above

Question 3

50

51

48

51.5

Question 4

solid only

liquid only

both on solid and liquid

orientation of the solid surface in liquid

Question 5

p = ρgh

ηRe = ρvd

S ( 2d l ) = Fd

Question 6

a

a2

a3

a-1

Question 7

high density and low viscosity

low density and high viscosity

high density and high viscosity

low density and low viscosity

Question 8

momentum

mass

energy

angular momentum

Solution

Question 9

10.3 ms -1

2.8 ms -1

5.6 ms -1

8.4 ms -1

Question 10

area decreases

area increases

velocity remains same

area remains same

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a²

a³

a^-1

10.3 ms ^-1

2.8 ms ^-1

5.6 ms ^-1

8.4 ms ^-1