Question: Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be
B.> 1
C.< 1
D.≤ 1
Answer: Option B

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Question 1. Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
  1.    Cost
  2.    Availability
  3.    Toxicity
  4.    Selectivity
Answer: Option D
Question 2. Ponchan-Savarit method analyses the fractional equipment based on
  1.    Enthalpy balance only
  2.    Material balance only
  3.    Both enthalpy and material balances
  4.    The assumption of constant molaloverflow
Answer: Option C
Question 3. The solvent used in liquid extraction should not have high latent heat of vaporisation, because
  1.    The pressure drop and hence the pumping cost will be very high
  2.    It cannot be recovered by distillation
  3.    Its recovery cost by distillation may be prohibitatively high
  4.    It will decompose while recovering by distillation
Answer: Option C
Question 4. The recovery of pencillin from the acidified fermentation broth is done by
  1.    Distillation
  2.    Evaporation
  3.    Absorption
  4.    Liquid extraction
Answer: Option D
Question 5. Component A is diffusing in a medium B. The flux NA relative to a stationary point is equal to the flux due to molecular difusion, if
  1.    Mass transfer is accompanied by reaction
  2.    Diffusion of A is in stagnant medium B
  3.    Molecular mean free path is high
  4.    There is equimolar counter diffusion
Answer: Option D
Question 6. One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect
  1.    The product composition but not the fraction vaporised
  2.    The product composition as well as the fraction vaporised
  3.    The fraction vaporised but not the product composition
  4.    Neither the product composition nor the fraction vaporised
Answer: Option C

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