Quiz  /  Viscosity Class 11 MCQ Questions With Answers

  • 1. 
    Which of these fluids has the highest viscosity?

  • Water
  • Honey
  • Blood
  • Air

  • 2. 
    What happens to the viscosity of liquid with the decrease in concentration?

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

  • 3. 
    What happens to the viscosity of gas with the increase in temperature?

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

  • 4. 
    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

  • 5. 
    What is the S.i. unit of viscosity?

  • Candela
  • Poise
  • Newton
  • No unit

  • 6. 
    What happens to the viscosity of liquid with the increase in particle size?

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

  • 7. 
    Viscous force between the two layers having unit area and unit velocity gradient.

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

  • 8. 
    Viscous force between the two layers is directly proportional to distance between the layers.

  • True
  • False

  • 9. 
    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

  • 10. 
    What happens to the viscosity of liquid with the increase in temperature?

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