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Separation Processes
Separation Processes Assessment
Quiz 1
Solution
Q.1.
What is a flash?
a) It is a single-equilibrium stage distillation where the feed is partially vaporized to give a vapor feed rich in more volatile components.
b) It is a double-equilibrium stage distillation where the feed is partially vaporized to give a vapor feed rich in more volatile components
c) It is a single-equilibrium stage distillation where the feed is completely vaporized to give a vapor feed rich in more volatile components
d) It is a single-equilibrium stage distillation where the feed is partially vaporized to give a vapor feed rich in less volatile components
Q.2.
When is flashing a replacement for distillation?
a) When the relative velocity is high
b) When the relative velocity is low
c) When the relative volatility is high
d) When the relative volatility is low
Q.3.
What is the condition for phase equilibrium?
a) Pv=PL
b) TV=TL
c) yi=kixi
d) Fzi=Vyi + Lxi
Q.4.
What is the condition for thermal equilibrium?
a) Pv=PL
b) TV=TL
c) yi=kixi
d) Fzi=Vyi + Lxi
Q.5.
What is the condition for mechanical equilibrium?
a) Pv=PL
b) TV=TL
c) yi=kixi
d) Fzi=Vyi + Lxi
Q.6.
What is the equation for component material balance?
a) Pv=PL
b) TV=TL
c) yi=kixi
d) Fzi=Vyi + Lxi
Q.7.
What is the equation for total energy balance?
a) Pv=PL
b) F=V + L
c) yi=kixi
d) Fzi=Vyi + Lxi
Q.8.
What is the dew point quation?
a) ∑ ziki=0
b) ∑ zi/ki=0
c) ∑ ziki=1
d) ∑ zi/ki=1
Q.9.
What is the bubble point equation?
a) ∑ ziki=0
b) ∑ zi/ki=0
c) ∑ ziki=1
d) ∑ zi/ki=1
Q.10.
What is true about vapor- liquid equilibrium?
a) Vapor is at its dew point and liquid at its bubble point
b) Vapor at its bubble point and liquid at its dew point
c) Both the liquid and vapor at dew point
d) Both the liquid and vapor at bubble point
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