Explore topic-wise MCQs in Food Engineering.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

In plate evaporator, the heat transfer coefficient is high in spite of low residence time because _____

A. It deals with high viscosity food items
B. It is economic
C. Feed is made to pass as thin film
D. All of the mentioned reasons
Answer» D. All of the mentioned reasons
Discussion
2.

In flashing of jams, the temperature of concentrated jam _____ on flashing. Also, the vapor pressure of the concentrated jam _____

A. Decreases, sustains combustion
B. Increases, sustains combustion
C. Decreases, does NOT sustain combustion
D. Increases, does NOT sustain combustion
Answer» B. Increases, sustains combustion
Discussion
3.

Desolventization which is done in certain evaporators is more similar to distillation than evaporation.

A. True
B. False
Answer» B. False
Discussion
4.

A major reason as to why evaporators and their selection for different applications in the food industry is very important is because ______

A. Organoleptic characteristics of food is very important
B. Many food items are heat sensitive
C. Majority of them have high moisture content
D. All of the mentioned reasons
Answer» E.
Discussion
5.

Industry A is low on budget and is used in the sugar industry. Industry B wants to invest in a good evaporator. They are needed for meat extracts. Which evaporators will you suggest for each of them?

A. Forced circulation evaporator, forced circulation evaporator
B. Rising film evaporator forced circulation evaporator
C. Forced circulation evaporator, rising film evaporator
D. Rising film evaporator, rising film evaporator
Answer» C. Forced circulation evaporator, rising film evaporator
Discussion
6.

Statement 1: Scraped surface evaporators are used in the dairy industry.
Statement 2: Plate evaporators can be used for viscous liquids.

A. True, False
B. True, True
C. False, False
D. False, True
Answer» D. False, True
Discussion
7.

Plate evaporators are used in recovering aroma from fruit juices.

A. True
B. False
Answer» C.
Discussion
8.

In a rising film evaporator, the temperature difference need not be as high as that in a falling film evaporator.

A. True
B. False
Answer» C.
Discussion
9.

Statement 1: In a rising film evaporator, the feed can be very viscous.
Statement 2: In a rising film evaporator, the feed cannot be heat sensitive.

A. True, False
B. True, True
C. False, False
D. False, True
Answer» D. False, True
Discussion
10.

Statement 1: Horizontal tube evaporator is easy for cleaning.
Statement 2: Horizontal tube evaporator has a disadvantage of hindering agitation of the feed.

A. True, False
B. True, True
C. False, False
D. False, True
Answer» C. False, False
Discussion