Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Two component Gas -Two component Liquid system-I”.
1. In vapor-liquid equilibrium, the more volatile component tends to accumulate in ______ phase.
a) Vapor
b) Liquid
c) Solid
d) None of the mentioned
Answer: a
Clarification: In vapor-liquid equilibrium, the more volatile component tends to accumulate in vapor phase.
2. In vapor-liquid equilibrium, the less volatile component tends to accumulate in ______ phase.
a) Vapor
b) Liquid
c) Solid
d) None of the mentioned
Answer: b
Clarification: In vapor-liquid equilibrium, the less volatile component tends to accumulate in liquid phase.
3. In vapor-liquid equilibrium, the component with larger vapor pressure tends to accumulate in ______ phase.
a) Vapor
b) Liquid
c) Solid
d) None of the mentioned
Answer: a
Clarification: In vapor-liquid equilibrium, the component with larger vapor pressure tends to accumulate in vapor phase.
4. In vapor-liquid equilibrium, the component with lesser vapor pressure tends to accumulate in ______ phase.
a) Vapor
b) Liquid
c) Solid
d) None of the mentioned
Answer: b
Clarification: In vapor-liquid equilibrium, the component with larger vapor pressure tends to accumulate in liquid phase.
5. For a solution to be ideal
a) All the molecules of all type should have the same size
b) All the molecules of all type may have the same size
c) All the molecules of all type must not have the same size
d) None of the mentioned
Answer: a
Clarification: For a solution to be ideal all the molecules of all type should have the same size.
6. In an ideal solution
a) All of the molecules have same intra-molecular force
b) All of the molecules may have same intra-molecular force
c) All of the molecules do not have same intra-molecular force
d) None of the mentioned
Answer: a
Clarification: In an ideal solution all of the molecules have same intra-molecular force.
7-9. For the given Raoult`s law expression: Pi = XiPi*(T)
7. What Pi represents in the expression?
a) Partial pressure of component i in the vapor phase
b) Mole fraction of component i in the liquid phase
c) Vapor pressure of component i at T
d) None of the mentioned
Answer: a
Clarification: What Pi represents the Partial pressure of component i in the vapor phase.
8. What Xi represents in the expression?
a) Partial pressure of component i in the vapor phase
b) Mole fraction of component i in the liquid phase
c) Vapor pressure of component i at T
d) None of the mentioned
Answer: b
Clarification: Xi represents the Mole fraction of component i in the liquid phase.
9. What Pi represents in the expression?
a) Partial pressure of component i in the vapor phase
b) Mole fraction of component i in the liquid phase
c) Vapor pressure of component i at T
d) None of the mentioned
Answer: c
Clarification: Pi represents the Vapor pressure of component i at T.
10. Raoult`s law is used primarily for a component whose mole fraction approaches ________
a) 0.25
b) 0.50
c) 0.75
d) 1.00
Answer: d
Clarification: Raoult`s law is used primarily for a component whose mole fraction approaches to unity.