Freeze Drying MCQs : This section focuses on the "Freeze Drying". These Multiple Choice Questions (MCQs) should be practiced to improve the Freeze Drying skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
At what point the ice crystal formation takes place?
A. When the material is cooled below itstriple point
B. When the material is cooled below its freezing point
C. When the material is cooled below its dew point
D. When the material is cooled above its triple point
Question 2
During the primary drying phase in freeze drying, What is necessary to calculate amount of heat required?
A. By using latent heat of sublimation
B. By using latent heat of vapourization
C. By using enthaply
D. By using specific heat
Question 3
How long does freeze drying take?
A. 10 to 40 hours
B. 20 to 40 hours
C. 30 to 50 hours
D. 5 to 20 hours
Question 4
What foods cannot be freeze dried?
A. Foods with high fiber content
B. Foods with high Vitamin B12 content
C. Foods with high protein content
D. Foods with high fat content
Question 5
What is alternative name for freeze drying?
A. Lyophilisation
B. Cold pasteurization
C. Irradiation
D. Liposuction
Question 6
What is cryodesiccation?
A. Freeze drying
B. Cold pasteurization
C. Irradiation
D. Dehydration
Question 7
What is the main advantage of annealing?
A. It is done to achieve largeice crystals
B. It is done to achieve smallice crystals
C. It is done to achieve microscopicice crystals
D. It is done to achieve mixture of large and small ice crystals all
Question 8
Which of the following is known to result in the highest quality of foods amongst all drying techniques?
A. Freeze drying
B. Cold pasteurization
C. Osmotic dehyradtion
D. Evaporation
Question 9
Who discovered freeze drying?
A. Jacques-Arsened'Arsonval
B. Charles Chamberland
C. Willis Carrier
D. Clarence Birdseye
Question 10
Freeze Drying is a process in which a completely frozen sample is placed under a vacuum in order to remove water or other solvents from the sample, allowing the ice to change directly from a solid to a vapor without passing through a liquid phase.
A. True
B. False