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VISCOSITY MCQs

Total Questions : 30 | Page 2 of 3 pages
Question 11. Which material would have the greatest viscosity at normal temperatures?
  1.    Peanut Butter
  2.    Jelly
  3.    Milk
  4.    Marshmallow Fluff
 Discuss Question
Answer: Option C. -> Milk
Question 12. Which of these factors affects Viscosity?
  1.    Temperature
  2.    Colour
  3.    Taste
  4.    None of these
 Discuss Question
Answer: Option A. -> Temperature
Question 13. The best example of a substance with low viscosity is?
  1.    Honey
  2.    Soap
  3.    Marbles
  4.    Water
 Discuss Question
Answer: Option D. -> Water
Question 14. Which material would have the lowest viscosity at normal temperatures?
  1.    Peanut Butter
  2.    Jelly
  3.    Milk
  4.    Marshmallow Fluff
 Discuss Question
Answer: Option C. -> Milk
Question 15. If a liquid has high viscosity, it probably has:
  1.    strong resistance to flow
  2.    weak resistance to flow
 Discuss Question
Answer: Option A. -> strong resistance to flow
Question 16. One Stoke is equal to
  1.    10-4 m2/sec
  2.    10-3 m2/sec
  3.    10-2 m2/sec
  4.    10-1 m2/sec
 Discuss Question
Answer: Option A. -> 10-4 m2/sec
Question 17. Which of the following represents viscosity?
  1.    Potential energy stored in fluid
  2.    Resistance to fluid motion
  3.    Roughness of the surface
  4.    The pressure difference between the two fluids
 Discuss Question
Answer: Option B. -> Resistance to fluid motion
Question 18. Which of the following lists magma types in order of increasing viscosity (least viscous first)?
  1.    Basaltic
  2.    andesitic
  3.    rhyolitic
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 19. Newton's law of viscosity states that
  1.    the shear stress applied to the fluid is directly proportional to the velocity gradient (du/dy)
  2.    the shear stress applied to the fluid is inversely proportional to the velocity gradient (du/dy)
  3.    the shear stress applied to the fluid is directly proportional to the specific weight of the fluid
  4.    the shear stress applied to the fluid is inversely proportional to the specific weight of the fluid
 Discuss Question
Answer: Option A. -> the shear stress applied to the fluid is directly proportional to the velocity gradient (du/dy)
Question 20. Which one of the following shows the correct order (left to right) of decreasing magma viscosity?
  1.    Rhyolite, andesite, basalt
  2.    Andesite, rhyolite, basalt
  3.    Basalt, rhyolite, andesite
  4.    Basalt, andesite, rhyolite
 Discuss Question
Answer: Option A. -> Rhyolite, andesite, basalt

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