This set of Bioseparation Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Driving Force of Filtration”.
1. Filtration is driven by __________
a) Pressure drop
b) Filter medium
c) Clarification
d) Suspended particles
View Answer
Explanation: The process of filtration in bioseparation engineering is driven by applying a pressure drop in the process across the filter medium being used for filtration.
2. The driving force can be applied by __________
a) releasing
b) concentrating
c) applying
d) pressurizing
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Explanation: In the process of filtration, the driving force is applied by creating a pressure in the feed side of the filter medium, and the pressure might be positive pressure or just the simple pressure for the process of filtration.
3. Creating a vacuum pressure is considered as __________
a) pressure drop
b) driving force
c) positive pressure
d) maintenance of filtration
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Explanation: The driving force of the process of filtration is also given by creating a vacuum pressure in the filtrate side of the filter medium and it can be either negative pressure or the vacuum filtration.
4. What is the significance of the given diagram?
a) Vacuum filtration
b) Pressure filtration
c) Constant filtration
d) Cake filtration
View Answer
Explanation: The given diagram represents the process of pressure filtration, in this is pressure is applied from above the filter medium and filtrate is collected from the bottom of the medium.
5. What is the significance of the given diagram?
a) Vacuum filtration
b) Pressure filtration
c) Constant filtration
d) Cake filtration
View Answer
Explanation: The given diagram represents the process of vacuum filtration, in this pressure is not applied to the filter medium but the vacuum is created in the filtrate side of the filter medium and filtrate is collected from the bottom of the medium.
6. Simple pressure filtration is also called negative pressure filtration.
a) True
b) False
View Answer
Explanation: The simple pressure filtration is not known as negative pressure filtration but it is referred as positive pressure filtration because the pressure is applied to the filter medium directly from the top which causes the filtrate to settle down and can be separated from the bottom of the filter medium.
7. Vacuum filtration is known as negative pressure filtration.
a) True
b) False
View Answer
Explanation: In the process of vacuum filtration, there is no pressure applied to the filter medium therefore it is referred as negative pressure and in this the vacuum is created and the filtrate is separated from the bottom of the filter medium.
8. Pressure filtration can be driven by __________
a) Pressurizing the filter medium
b) Pressurizing the pump
c) Pressurizing the feed
d) Compressing the pressure
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Explanation: In bioseparation engineering, the Pressure filtration of filtration process can be driven by pressurizing the feed using compressed air pressurization or using a suitable pump to generate pressure by maintaining a hydrostatic liquid on the feed side of the filter medium.
9. Vacuum filtration can be commonly used in __________
a) industries
b) laboratory
c) house hold
d) not commonly used
View Answer
Explanation: The vacuum filtration can be used commonly in laboratory, because it does not require any pressure therefore, just creating vacuum is easier than applying pressure to the filter medium to separate the filtrate.
10. Vacuum can be generated by __________
a) water jet injector
b) pump
c) pressure pump
d) spray
View Answer
Explanation: In bioseparation engineering, the process of vacuum filtration of filtration techniques that require vacuum can be generated using a water jet injector. The injector causes the water to pump through the injector and creates vacuum in the system and is applied in the filter medium for supporting the vacuum filtration.
11. Vacuum filtration is given preference __________
a) easy availability
b) easy handling
c) safety
d) laboratory use
View Answer
Explanation: In bioseparation engineering, the process of filtration, Vacuum filtration is preferred over pressure filtration because of the safety point of view of the system because the explosion is more dangerous than implosion.
12. Substance that cannot be separated by vacuum filtration are __________
a) foam forming
b) vacuum creating
c) acidic
d) basic
View Answer
Explanation: In bioseparation engineering, the process of filtration vacuum filtration cannot filter the substances that forms foam and is restricted to the maximum pressure drop to 1 atmosphere.
Sanfoundry Global Education & Learning Series – Bioseparation Engineering.
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