Separation Processes Questions and Answers – Mass Transfer in Turbulent Flow

This set of Separation Processes Multiple Choice Questions & Answers (MCQs) focuses on “Mass Transfer in Turbulent Flow”.

1. Which of the following is true about turbulent flow?
a) N_re greater than 2000
b) N_re greater than 4000
c) N_re greater than 5000
d) N_re greater than 6000
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2. Which of the following reynold’s number represents a turbulent flow?
a) 500
b) 700
c) 2500
d) 6000
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3. Which of the following is present in turbulent flow mass transfer?
a) Slow mass transfer
b) Less mass transfer
c) Eddy currents
d) Eddy diffusion
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4. What is the physical significance of drag coefficient?
a) It is drag force divided by projected area and velocity head
b) It is the ratio of pipe wall shear stress and velocity head
c) It is the ratio of inertial forces to viscous force
d) It is the ratio of inertial force to surface tension force
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5. What is the physical significance of weber number?
a) It is drag force divided by projected area and velocity head
b) It is the ratio of pipe wall shear stress and velocity head
c) It is the ratio of inertial forces to viscous force
d) It is the ratio of inertial force to surface tension force
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6. What is the physical significance of lewis number?
a) It is the ratio of bulk transfer mass and molecular diffusion
b) It is the ratio of thermal diffusivity to mass diffusivity
c) It is the ratio of conductive mass transfer to molecular diffusion
d) It is the ratio of mass transfer to mass capacity
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7. What is the Sherwood number analogous to?
a) Schmidt number
b) Lewis number
c) Nusselt number
d) Prandtl number
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8. Which of the following equations is referred as reynold’s analogy?
a) f/c = k_c/u_x
b) f/c = k_cu_x
c) f/2 = k_cu_x
d) f/2 = k_c/u_x
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9. For what condition does the equation for reynold’s analogy equals to equation by Chilton-colburn analogy.
a) N_pr=N_re=1
b) N_pr=N_se=1
c) N_pr=N_sc=1
d) N_sc=N_se=1
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10. What is the significance of fanning friction factor?
a) It is the ratio of pipe wall shear stress to velocity head
b) It is drag force divided by projected area and velocity head
c) It is the ratio of inertial forces to viscous force
d) It is the ratio of inertial force to surface tension force
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Sanfoundry Global Education & Learning Series – Separation Processes.

To practice all areas of Separation Processes, here is complete set of 1000+ Multiple Choice Questions and Answers.

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