Mass Transfer MCQs with answers Page - 67

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 • 833.24K Points
Coach

Q. (NRe . NSc) is termed in mass transfer operation as the __________ number.

  • (A) Stanton
  • (B) Sherwood
  • (C) Peclet
  • (D) None of these

A

Admin • 833.24K Points
Coach

Q. At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent

  • (A) Increases
  • (B) Decreases
  • (C) Remains unchanged
  • (D) Increases exponentially

A

Admin • 833.24K Points
Coach

Q. With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux

  • (A) Increases
  • (B) Decreases
  • (C) Remain same
  • (D) May increase or decrease; depends on system

A

Admin • 833.24K Points
Coach

Q. HETP is numerically equal to HTU, only when the operating line

  • (A) Lies below the equilibrium line
  • (B) Lies above the equilibrium line
  • (C) And equilibrium lines are parallel
  • (D) Is far from the equilibrium line

A

Admin • 833.24K Points
Coach

Q. The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

  • (A) Decoction
  • (B) Percolation
  • (C) Elutriation or elution
  • (D) None of these

A

Admin • 833.24K Points
Coach

Q. __________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

  • (A) Sherwood
  • (B) Stanton
  • (C) Lewis
  • (D) Peclet

A

Admin • 833.24K Points
Coach

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

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

A

Admin • 833.24K Points
Coach

Q. Drift in a cooling tower is

  • (A) The water entrained by the circulating air
  • (B) Dependent on the water lost by evaporation
  • (C) Desirable
  • (D) All (A), (B) & (C)

A

Admin • 833.24K Points
Coach

Q. In McCabe-Thiele method, at infinite reflux ratio

  • (A) The overhead product is minimum
  • (B) Both the operating lines coincide with diagonal
  • (C) Both (A) and (B)
  • (D) Neither (A) nor (B)

A

Admin • 833.24K Points
Coach

Q. Gaseous diffusivity at atmospheric pressure is of the order of __________ cm2/second.

  • (A) 1
  • (B) 1 to 5
  • (C) 5 to 10
  • (D) > 10

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