Quiz  /  Viscosity Gate & PSU MCQ Questions With Answers

  • 1. 
    As temperature increases ,viscosity of gas _______________.

  • Decreases
  • stays the same
  • Increases

  • 2. 
    The best example of a substance with low viscosity is?

  • Honey
  • Soap
  • Marbles
  • Water

  • 3. 
    The unit of Viscosity in SI system is Ns/m2

  • True
  • False

  • 4. 
    Which of the following liquids is viscous?

  • honey
  • water
  • soy sauce
  • cooking oil

  • 5. 
    A fluid which obeys the Newton's law of viscosity is termed as

  • Real fluid
  • Ideal fluid
  • Newtonian fluid
  • Non Newtonian fluid

  • 6. 
    Ratio between shear force per area

  • Shear strain
  • Shear stress

  • 7. 
    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

  • 8. 
    Which material would have the greatest viscosity at normal temperatures?

  • Peanut Butter
  • Jelly
  • Milk
  • Marshmallow Fluff

  • 9. 
    The best example of high viscosity would be?

  • Honey
  • Soap
  • Marbles
  • Water

  • 10. 
    Liquids with very low viscosity ,flow very _______________________.

  • fast
  • not at all
  • slow
  • whenever it wants

  • 11. 
    Peanut butter is an example of a...

  • High viscosity liquid
  • Low viscosity liquid
  • Isnt a liquid at all! Don't be silly.

  • 12. 
    High viscosity can be described as...

  • a liquid that flows quickly
  • a liquid that flows slowly

  • 13. 
    What is a fluid?

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

  • 14. 
    A substance that flows quickly has __________.

  • low viscosity
  • high viscosity

  • 15. 
    If a liquid has high viscosity, it probably has:

  • strong resistance to flow
  • weak resistance to flow

  • 16. 
    Toothpaste is very viscous.

  • True
  • False
  • I don't know

  • 17. 
    Poise is the unit of

  • surface tension
  • capillarity
  • viscosity
  • shear stress in fluids
  • buoyancy.

  • 18. 
    One Stoke is equal to

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

  • 19. 
    1 poise is equal to

  • 1/100 N s / m2
  • 1/10 N s / m2

  • 20. 
    Which of these factors affects Viscosity?

  • Temperature
  • Colour
  • Taste

  • 21. 
    Specific gravity value of mercury

  • 1
  • 13.6
  • 0

  • 22. 
    Liquids with very high viscosity flow very _______________________.

  • fast
  • not at all
  • slow
  • whenever it wants

  • 23. 
    Which of these are fluids?

  • Oxygen
  • Water
  • Rocks
  • Both A & B

  • 24. 
    What is Viscosity?

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

  • 25. 
    The unit of kinematic viscosity is

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

  • 26. 
    What is fluid flow?

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