1.
Which property measures the resistance of a liquid to flow?
A
Volume
B
Solubilit
C
Density
D
Viscosity
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Which property measures the resistance of a liquid to flow?
Volume
Solubilit
Density
Viscosity
Which of the following correctly states how the viscosities of a liquid and a gas will change with temperature?
Viscosity decreases with the increase in temperature of a liquid and decreases with the increase in temperature of a gas
Viscosity decreases with the increase in temperature of a liquid and increases with the increase in temperature of a gas
Viscosity increases with the increase in temperature of a liquid and decreases with the increase in temperature of a gas
Viscosity increases with the increase in temperature of a liquid and increases with the increase in temperature of a gas
What is the correct definition of solubility?
The rate at which a solute dissolves into a solvent
The ability of immiscible liquid droplets to disperse within a second liquid phase
The ability of solid particles to disperse throughout a liquid continuous phase
The ability of a solute to dissolve into a solvent
What is the correct definition of a pseudoplastic liquid?
A liquid which becomes less viscous over time when a constant shear stress is applied
A liquid which becomes more viscous over time when a constant shear stress is applied
A liquid which becomes less viscous as the rate of shear increases
A liquid which becomes more viscous as the rate of shear increases
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