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
0 h : 0 m : 1 s