Viscosity MCQ Multiple Choice Questions Answers | Quiz for Practice

Q: 1. What is Viscosity?

Correct Answer is: A fluids resistance to flow

Q: 5. 1 Stoke is equal to

Correct Answer is: 100 centi stokes

Q: 7. A fluid which obeys the Newtons law of viscosity is termed as

Correct Answer is: Newtonian fluid

Q: 13. Viscous force between the two layers having unit area and unit velocity gradient.

Correct Answer is: Coefficient of viscosity

Q: 15. What happens to the viscosity of liquid with the increase in temperature?

Correct Answer is: It decreases

Q: 18. Which of the following represents viscosity?

Correct Answer is: Resistance to fluid motion

Viscosity MCQs are essential for students and exam aspirants to test and enhance their understanding of fluid dynamics. Practice these questions to prepare for exams, interviews, and more.

About Viscosity MCQ Questions

Viscosity is a measure of a fluid's resistance to gradual deformation by shear or tensile stress. These multiple-choice questions (MCQs) cover key concepts such as Newtonian and non-Newtonian fluids, shear stress, and the effects of temperature and pressure on viscosity. Practicing these questions will help you grasp the fundamental principles of fluid mechanics and their practical applications.

Why Practice Viscosity Objective Questions?

Practicing Viscosity MCQs offers several benefits. It helps in reinforcing your understanding of fluid dynamics, preparing you for school and college exams, competitive exams, and job interviews. Regular practice also improves your problem-solving skills and enhances your ability to recall important concepts under time constraints.

Who Should Use These MCQs?

Students preparing for school or college exams
Competitive exam aspirants
Candidates preparing for interviews

Viscosity MCQ Questions for Practice

1. What is Viscosity?

A fluids temperature
A fluids resistance to flow
None of these
A fluids colour

2. Poise is the unit of

Kinematic viscosity
viscosity
velocity gradient
Mass density

3. Viscosity of water in comparison to mercury is

Lower
Same
Higher/lower depending on temperature
Higher

4. Excessive friction takes place when the viscosity is

Too low
Moderate
Zero
Too high

5. 1 Stoke is equal to

100 centi stokes
1000 centi stokes
None of these
10 centi stokes

6. A fluid having no viscosity is known as

Ideal fluid
Super fluid
None of these
Real fluid

7. A fluid which obeys the Newtons law of viscosity is termed as

Ideal fluid
Newtonian fluid
Non Newtonian fluid
Real fluid

8. Fluids with very high viscosity flow very.........

slow
dont flow
none of these
fast

9. The best example of a substance with low viscosity is?

Soap
Marbles
Water
Honey

10. The viscosity of a fluid in motion is 1 poise

11. The viscosity of an oil decrease when temperature

Is constant
Increases
100<>sup>oC
Decreases

12. The viscosity of petroleum oil for hydraulic lifts is

Low
Moderate
Very high
High

13. Viscous force between the two layers having unit area and unit velocity gradient.

Surface tension
Elasticity
None of the above
Coefficient of viscosity

14. What do you call the resistance of a liquid to flow?

mass
viscosity
fluidity
volume

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

It decreases
It may increase or decrease
No change
It increases

16. What is the S.I. unit of viscosity?

Poise
Newton
No unit
Candela

17. Which of the following liquids is viscous?

water
Petrol
cooking oil
honey

18. Which of the following represents viscosity?

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

19. Which of these are fluids?

Water
Rocks
Both A & B
Oxygen

20. Which of these factors affects Viscosity?

Colour
Taste
None of these
Temperature

21. 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?

never affects
facilitates
may effect under certain conditions
opposes

22. What is the correct definition of a pseudoplastic liquid?

A liquid which becomes more viscous as the rate of shear increases
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

23. What is the correct definition of solubility?

The ability of a solute to dissolve into a solvent
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

24. Which of the following correctly states how the viscosities of a liquid and a gas will change with temperature?

Viscosity increases with the increase in temperature of a liquid and increases with the increase in temperature of a gas
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