Mass Transfer MCQs with answers Page - 5

Here, you will find a collection of MCQ questions on Mass Transfer. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 802.91K Points
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Q. Which of the following is directly concerned with psychrometry?

  • (A) Lewis reltionship
  • (B) Galileo number
  • (C) Weber number
  • (D) Dean number

A

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Q. Which is not concerned directly with mass transfer?

  • (A) Schmidt number
  • (B) Sherwood number
  • (C) Lewis relationship
  • (D) Froude number

A

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Q. __________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.

  • (A) Watted wall
  • (B) Packed
  • (C) Plate
  • (D) Spray

A

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Q. In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency

  • (A) Liquid stream should be distributed uniformly
  • (B) Gas stream should be distributed uniformly
  • (C) Both gas as well as liquid streams should be distributed uniformly
  • (D) By passing should be completely avoided

A

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Q. In case of binary distillation, increasing the reflux ratio above optimum does not result in the increase of

  • (A) Area between operating line and 45° diagonal x-y diagram
  • (B) Condenser and reboiler surfaces
  • (C) Tower cross-section
  • (D) None of these

A

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Q. The reflux to a distillation column is 100 moles/hr, when the overhead product rate is 50 moles/hr. The reflux ratio is

  • (A) 0.5
  • (B) 2
  • (C) 50
  • (D) 150

A

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Q. Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.

  • (A) Surface renewal
  • (B) Film
  • (C) Penetration
  • (D) None of these

A

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Q. Component A is diffusing in a medium B. The flux NA relative to a stationary point is equal to the flux due to molecular diffusion, if

  • (A) There is equimolar counter diffusion
  • (B) Molecular mean free path is high
  • (C) Diffusion of A is in stagnant medium B
  • (D) Mass transfer is accompanied by reaction

A

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Q. The recovery of pencillin from the acidified fermentation broth is done by

  • (A) Distillation
  • (B) Evaporation
  • (C) Absorption
  • (D) Liquid extraction

A

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Q. Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

  • (A) 1
  • (B) > 1
  • (C) < 1
  • (D) ≤ 1

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