Quiz  /  Viscosity Class 12 MCQ Questions With Answers

  • 1. 
    The best example of a substance with low viscosity is?

  • Honey
  • Soap
  • Marbles
  • Water

  • 2. 
    The unit of Viscosity in SI system is Ns/m2

  • True
  • False

  • 3. 
    Which of the following liquids is viscous?

  • honey
  • water
  • soy sauce
  • cooking oil

  • 4. 
    Which material would have the greatest viscosity at normal temperatures?

  • Peanut Butter
  • Jelly
  • Milk
  • Marshmallow Fluff

  • 5. 
    The best example of high viscosity would be?

  • Honey
  • Soap
  • Marbles
  • Water

  • 6. 
    Peanut butter is an example of a...

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

  • 7. 
    What is a fluid?

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

  • 8. 
    A substance that flows quickly has __________.

  • low viscosity
  • high viscosity

  • 9. 
    If a liquid has high viscosity, it probably has:

  • strong resistance to flow
  • weak resistance to flow

  • 10. 
    Toothpaste is very viscous.

  • True
  • False
  • I don't know

  • 11. 
    Which of these factors affects Viscosity?

  • Temperature
  • Colour
  • Taste

  • 12. 
    Liquids with very high viscosity flow very _______________________.

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

  • 13. 
    Which of these are fluids?

  • Oxygen
  • Water
  • Rocks
  • Both A & B

  • 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.

  • 15. 
    Which of these fluids has the highest viscosity?

  • Water
  • Honey
  • Blood
  • Air

  • 16. 
    What happens to the viscosity of liquid with the decrease in concentration?

  • It increases
  • It decreases
  • It may increase or decrease
  • No change

  • 17. 
    Which of the following represents velocity gradient?

  • Change of velocity with time
  • Change of velocity with distance
  • Change of velocity with mass
  • None of the above

  • 18. 
    What is the S.i. unit of viscosity?

  • Candela
  • Poise
  • Newton
  • No unit

  • 19. 
    What happens to the viscosity of liquid with the increase in particle size?

  • It increases
  • It decreases
  • It may increase or decrease
  • No change

  • 20. 
    Viscous force between the two layers having unit area and unit velocity gradient.

  • Coefficient of viscosity
  • Surface tension
  • Elasticity
  • None of the above

  • 21. 
    Viscous force between the two layers is directly proportional to distance between the layers.

  • True
  • False

  • 22. 
    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

  • 23. 
    What happens to the viscosity of liquid with the increase in temperature?

  • It increases
  • It decreases
  • It may increase or decrease
  • No change

  • 24. 
    High viscosity is when particles are closer together and the cohesive force is stronger.

  • True
  • False
  • I don't know

  • 25. 
    Low viscosity is when particles are farther apart and the cohesive force is stronger.

  • True
  • False
  • I don't know

  • 26. 
    The particles of a liquid with high cohesive force has high viscosity.

  • TRUE
  • FALSE

  • 27. 
    Which of the following liquids is non-viscous?

  • tomato sauce
  • glue
  • paint
  • juice

  • 28. 
    As temperature increases ,viscosity of liquid _______________.

  • increases
  • stays the same
  • decreases

  • 29. 
    Viscosity can be described as...

  • a physical property of liquids
  • a physical property of solids
  • a chemical property of liquids

  • 30. 
    As temperature increases viscosity _______________.

  • increases
  • stays the same
  • decreases
Report Question
warning
access_time
  Time