Q.1
Smoker proposed an analytical closed form formula, to calculate
  • a) Reflux ratio
  • b) Number of trays
  • c) Number of stages
  • d) Number of feeds
Q.2
The analytical formula fails to predict the
  • a) Equilibrium Stages
  • b) Reflux ratio
  • c) Feed inlet and outlet
  • d) Boil up
Q.3
In the below diagram, the minimum reflux can be seen as ______ using smoker’s equation.
Questiondistillation-design-questions-answers3.jpg
  • a) 1.567
  • b) 1.425
  • c) 1.2
  • d) Can’t be specified
Q.4
Smoker’s equation is convenient to use, in binary separations with
  • a) Large number of stages
  • b) Small number of stages
  • c) Independent stages
  • d) Dependent stages
Q.5
Smoker’s equation is based on assumption?
  • a) Constant molar overflow and volatility
  • b) Constant Molar overflow and viscosity
  • c) Constant feed and stages
  • d) Constant Pressure
Q.6
If NR is 5.and NS is 3.Total stages are
  • a) 2.02
  • b) 1.8
  • c) 8.86
  • d) 1.59
Q.7
According to smoker’s equation, b is given as
  • a) R+1
  • b) xD/R+1
  • c) xD/y
  • d) y/R+1
Q.8
According to smoker’s equation, C is given as
  • a) 1 + (α -1) k
  • b) 1 -(α -1)k
  • c) 1 -(α +1)k
  • d) α -1
Q.9
Calculate b? If xD= 0.and R=8
  • a) 0.445
  • b) 0.118
  • c) 0.2375
  • d) 0.568
Q.10
If reflux ratio isthen slope m is estimated as
  • a) 0.75
  • b) 1
  • c) 0.66
  • d) 0.90
0 h : 0 m : 1 s