Q.1.
Large number of flash distillation equals a differential distillation.
- a) True
- b) False
Q.2.
The column used for differential distillation is_______________
- a) Still
- b) Differential column
- c) Batch column
- d) None of the mentioned
Q.3.
Simple distillation is a___________ process.
- a) Batch
- b) Continuous
- c) Adiabatic
- d) None of the mentioned
Q.4.
The initial portion of the distillate will be a low volatile component.
- a) True
- b) False
Q.5.
After the separation by differential distillation, the high volatile and low volatile components are stored in _____________
- a) Batch
- b) Cuts
- c) Distill
- d) None of the mentioned
Q.6.
For a ternary mixture, the number of cuts required is_________
- a) 1
- b) 2
- c) 3
- d) 4
Q.7.
The differential distillation in order to maintain the equilibrium the process should be slow.
- a) True
- b) False
Q.8.
Pre-cooling is required before passing the vapour to the condenser in a still.
- a) True
- b) False
Q.9.
The equation applicable for batch distillation is _________
- a) Frenske’s equation
- b) Rayleigh equation
- c) Wilke-chan equation
- d) None of the mentioned
Q.10.
Estimate the feed rate, if the composition of the more volatile component in the feed isand the residue isand the equilibrium relation is given by y*= 1.975x. Also, the rate of residue ismol/hr.
- a) 213 mol/hr
- b) 313 mol/hr
- c) 413 mol/hr
- d) 513 mol/hr
Q.11.
Find the feed rate by analysing the graph,
- a) 153 mol/hr
- b) 163 mol/hr
- c) 173 mol/hr
- d) 183 mol/hr
Q.12.
Find the composited distillate composition,
- a) 0.52
- b) 0.62
- c) 0.72
- d) 0.82
Q.13.
Find the value of relative volatility for a constant pressure process if
- a) 1
- b) 2
- c) 2.43
- d) Data inadequate
Q.14.
Find the distillate rate, if a differential condenser is used and the equilibrium relation is given as x*= 0.2y. Also the rate of feed ismol/hr.
- a) 12 mol/hr
- b) 22 mol/hr
- c) 33 mol/hr
- d) 44 mol/hr
Q.15.
Find the rate of distillate, if the composition of the more volatile component in the feed isand the residue isand the equilibrium relation is given by y*= 1.975x. Also the rate of residue ismol/hr.
- a) 153 mol/hr
- b) 253 mol/hr
- c) 353 mol/hr
- d) 453 mol/hr