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Question 1. Use of packed towers for distillation is generally limited to the
  1.    Small sizes
  2.    Multicomponent distillation
  3.    High pressure operation
  4.    Vacuum distillation
Answer: Option A

Question 2. The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is
  1.    1
  2.    ∞
  3.    0.5
  4.    2
Answer: Option B

Question 3. Which of the following is used for the concentration of rubber latex?
  1.    Agitated film evaporator
  2.    Long tube vertical evaporator
  3.    Short tube evaporator
  4.    Calendria
Answer: Option A

Question 4. The minimum number of theoretical plates is required for achieving a given separation in distillation column with
  1.    No reflux
  2.    Total reflux
  3.    Zero reflux ratio
  4.    Minimum reflux ratio
Answer: Option B

Question 5. In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,
  1.    Inversely
  2.    Linearly
  3.    Exponentially
  4.    None of these
Answer: Option B

Question 6. Fenske's equation for determining the minimum number of theoretical stages in distillation column holds good, when the
  1.    Relative volatility is reasonably constant
  2.    Mixture (to be separated) shows negative deviation from ideality
  3.    Mixture (to be separated) shows positive deviation from ideality
  4.    Multicomponent distillation is involved
Answer: Option A