81.
The viscous force the relative motion between the adjacent layers of a fluid in motion. Which one of the flowing fits best in the sentence?
A
facilitates
B
may effect under certain conditions
C
opposes
D
never affects
Loading practice questions
Browse topic-based General Science practice sets.
2333 practice sets · Page 5 of 117
The viscous force the relative motion between the adjacent layers of a fluid in motion. Which one of the flowing fits best in the sentence?
facilitates
may effect under certain conditions
opposes
never affects
Which of these factors affects Viscosity?
Taste
None of these
Temperature
Colour
Which of these are fluids?
Rocks
Both A & B
Oxygen
Water
Which of the following represents viscosity?
Roughness of the surface
The pressure difference between the two fluids
Potential energy stored in fluid
Resistance to fluid motion
Which of the following liquids is viscous?
Petrol
cooking oil
honey
water
What is the S.I. unit of viscosity?
Newton
No unit
Candela
Poise
What happens to the viscosity of liquid with the increase in temperature?
It increases
It decreases
It may increase or decrease
No change
What do you call the resistance of a liquid to flow?
volume
mass
viscosity
fluidity
Viscous force between the two layers having unit area and unit velocity gradient.
Coefficient of viscosity
Surface tension
Elasticity
None of the above
The viscosity of petroleum oil for hydraulic lifts is
High
Low
Moderate
Very high
The viscosity of an oil decrease when temperature
Decreases
Is constant
Increases
100<>sup>oC
The viscosity of a fluid in motion is 1 poise
0.5
1
2
The best example of a substance with low viscosity is?
Honey
Soap
Marbles
Water
Fluids with very high viscosity flow very.........
fast
slow
dont flow
none of these
A fluid which obeys the Newtons law of viscosity is termed as
Real fluid
Ideal fluid
Newtonian fluid
Non Newtonian fluid
A fluid having no viscosity is known as
Real fluid
Ideal fluid
Super fluid
None of these
1 Stoke is equal to
10 centi stokes
100 centi stokes
1000 centi stokes
None of these
Excessive friction takes place when the viscosity is
Too high
Too low
Moderate
Zero
Poise is the unit of
Mass density
Kinematic viscosity
viscosity
velocity gradient
What is Viscosity?
A fluids colour
A fluids temperature
A fluids resistance to flow
None of these