This set of Mass Transfer aptitude tests focuses on “Reboiler & Condenser Selection for Fractionator “.
1. Which of the following reboiler is considering as an additional tray?
a) Jacketed kettle
b) Internal reboiler
c) Kettle-reboiler
d) None of the mentioned
View Answer
Explanation: Kettle boiler is the external boiler considered as an additional tray.
2. The internal reboilers are preferred for maintaining the economy of an industry.
a) True
b) False
View Answer
Explanation: The internal reboilers need shutting down of distillation column for cleaning.
3. The vertical-syphon reboilers are not preferred because of
a) Fouling
b) Overheat
c) Large tubes
d) None of the mentioned
View Answer
Explanation: Vertical-syphon has inside tubes fouls frequently.
4. Jacketed kettle is preferred for kettle type reboiler.
a) True
b) False
View Answer
Explanation: Jacketed kettle needs fractionator shut down and has low heat transfer area.
5. The reboiler which is most preferred is
a) External
b) Internal
c) Middle
d) All of the mentioned
View Answer
Explanation: External reboiler can easily replace and no need for shutting down of fractionator.
6. Find the condenser location.
a) X
b) Y
c) Z
d) No condenser
View Answer
Explanation: Condenser is used to condense the high volatile vapour gas to liquid so it must present at the top.
7. Condenser or reboiler is consider as a trays or stage in a fractionator.
a) True
b) False
View Answer
Explanation: Some separated units are present in condenser or reboiler so it also included in a number of trays.
8. The fuel fired furnace is preferred for high boiling point.
a) True
b) False
View Answer
Explanation: The low volatile (high boiling point) components need more heat. So fuel fired furnace is preferred.
9. Will this arrangement is possible and effective.
a) True
b) False
View Answer
Explanation: NO distillate forms. NO separation occurs. Since the more volatile component and low volatile component remains similar to feed condition.
10. Most reboilers are
a) Heat regulators
b) Heat exchangers
c) Heat analyser
d) Heat rectifiers
View Answer
Explanation: Stream is economical for heat production so heat exchangers are preferred. Heat exchangers are easy to handle and replace.
Sanfoundry Global Education & Learning Series – Mass Transfer.
To practice all areas of Mass Transfer for aptitude tests, here is complete set of 1000+ Multiple Choice Questions and Answers
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- Practice Mechanical Engineering MCQs
- Practice Chemical Engineering MCQs
- Check Chemical Engineering Books
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