EVAPORATION
TOP 10 MCQ
1. Given below are two statements [GPAT-2022]
Statement I: Vertical long tube evaporator is also called as rising film evaporator
Statement II: Falling film evaporator is also called as forced circulation type evaporator
In light of the above statements, choose the most appropriate answer from the options given below:
(a) Both Statement I and Statement II are correct
(b) Both Statement I and Statement II are incorrect
(c) Statement I is correct but Statement II is incorrect
(d) Statement I is incorrect but Statement II is correct
2. Heat sensitive materials like fruit juice are evaporated in which one of the following [GPAT-2012]
(a) Long tube vertical evaporator
(b) Calandria type evaporator
(c) Falling film type evaporator
(d) Forced circulation type evaporator
3. Statement related to the process of evaporation that is incorrect is
(a) Evaporation occurs at any temperature
(b) Evaporation takes place within liquid
(c) Temperature may change during evaporation
(d) No bubbles are formed in liquid during evaporation
4. The evaporation from the surface of any liquid depends on
(a) Temperature
(b) Wind
(c) Nature of liquid
(d) All of the above
5. What is the name of a process where a liquid changes into a gas
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) Drying
6. The changing of a liquid into vapors from the surface of the liquid without heating it is called
(a) Expansion
(b) Condensation
(c) Evaporation
(d) Fusion
7. Calandria consists of the number of
(a) Baffles
(b) Jackets
(c) Outlets
(d) Tubular surface
8. What is the effect of evaporation on vapour pressure of liquid
(a) As vapour pressure increases evaporation increases
(b) Without pressure increase evaporation increases
(c) No effect
(d) None of the above
9. Evaporating pan is also known as
(a) Short tube evaporator
(b) Steam jacketed kettle
(c) Tube evaporator
(d) Rising film evaporator
10. Which evaporator is used to separate volatile and non-volatile material
(a) Evaporating pan
(b) Falling film evaporator
(c) Horizontal tube evaporator
(d) Climbing film evaporator
ANSWER KEY
| 1-c | 2-c | 3-c | 4-b | 5-b | 6-b | 7-d | 8-a | 9-b | 10-d |
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