Practice Viscosity Multiple Choice Questions with Answers Quiz-1

Q.1.

What is a fluid?

A firm and stable shape.
A substance that has no fixed shape and yields easily to external pressure.

Q.2.

Poise is the unit of

Mass density
Kinematic viscosity
viscosity
velocity gradient

Q.3.

1 poise is equal to

1/100 N s / m2
1/10 N s / m2

Q.4.

What is Viscosity?

A fluids colour.
A fluids temperature.
A fluids resistance to flow.

Q.5.

Excessive friction takes place when the viscosity is

Too high
Too low
Moderate
Zero

Q.6.

A fluid which obeys the Newton's law of viscosity is termed as

Real fluid
Ideal fluid
Newtonian fluid
Non Newtonian fluid

Q.7.

The viscosity of petroleum oil for hydraulic lifts is

High
Low
Moderate
Very high

Q.8.

1 Stoke is equal to

10 centi stokes
100 centi stokes
1000 centi stokes

Q.9.

The unit of kinematic viscosity is

Pa.s
m2 per sec
Pa.sec / sq. m
Kg.sec sq. / sq. m

Q.10.

Which of these fluids has the highest viscosity?

Water
Honey
Blood
Air

Q.11.

What happens to the viscosity of liquid with the increase in temperature?

It increases
It decreases
It may increase or decrease
No change

Q.12.

What is flow rate?

The speed of a fish swimming across a lake.
The speed of a rocket going to the moon.
The speed which a fluid flows from one point to another.

Q.13.

Which of the following represents viscosity?

Potential energy stored in fluid
Resistance to fluid motion
Roughness of the surface
The pressure difference between the two fluids

Q.14.

What is fluid flow?

Describes how fluids behave when frozen.
Describes how fluids behave when heated.
Describes how fluids behave in their surrounding environment.

Q.15.

Newton's law of viscosity states that

the shear stress applied to the fluid is directly proportional to the velocity gradient (du/dy)
the shear stress applied to the fluid is inversely proportional to the velocity gradient (du/dy)
the shear stress applied to the fluid is directly proportional to the specific weight of the fluid
the shear stress applied to the fluid is inversely proportional to the specific weight of the fluid

Q.16.

One Stoke is equal to

10-4 m2/sec
10-3 m2/sec
10-2 m2/sec
10-1 m2/sec

Q.17.

Highly explosive volcanoes tend to have what type of magma?

magma with high silica, high viscosity, and higher gas content
magma with low silica, low viscosity, and lower gas content
magma with low silica, high viscosity, and lower gas content
magma with no silica, high viscosity, and no gas content

Q.18.

Which unit of measurement is used for volume?

grams
centimeters
grams/milliliter
milliliter

Q.19.

Which material would have the lowest viscosity at normal temperatures?

Peanut Butter
Jelly
Milk
Marshmallow Fluff

Q.20.

The best example of high viscosity would be?

Honey
Soap
Marbles
Water

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