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Distillation Design
Distillation Design Assessment
Quiz 1
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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.
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
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