Top 150+ Solved Principles of Food Preservation MCQ Questions Answer
Q. The process of reverse osmosis is also known as
a. hyper-filtration
b. double-filtration
c. double-osmosis
d. hyper-osmosis
Q. Which of the following is not an application of reverse osmosis?
a. desalination
b. reclamation of minerals
c. for dialysis in hospitals
d. for industrial use
Q. Select the incorrect statement about reverse osmosis from the following option.
a. it is simple and reliable process
b. it is relatively energy efficient
c. it operates at a comparatively high temperature
d. the life of an spm is about 2 years and it can be easily replaced within a few minutes
Q. The total hardness of the potable water should be less than
a. 500 ppm
b. 700 ppm
c. 900 ppm
d. 1000 ppm
Q. Which of the following is NOT an advantage of dehydration under controlled conditions over sun drying?
a. cost
b. time of drying
c. quality of drying
d. none of the mentioned
Q. Which of the following is NOT a method of controlling biological forces on food supply?
a. packaging and chemical additives
b. reducing free water content
c. increasing osmotic pressure
d. none of the mentioned
Q. Which of the following is an advantage/use of dried food items?
a. lesser cost and minimum labor required
b. limited processing equipment and minimum food storage requirements
c. reduction in distribution costs
d. all of the mentioned
Q. Moisture content of a substance which exerts as equilibrium vapour pressure less than of the pure liquid at the same temperature is referred to as
a. bound moisture
b. unbound moisture
c. moisture
d. total moisture
Q. Moisture content of the solid which exerts an equilibrium vapour pressure equal to that of pure liquid at the given temperature is the
a. bound moisture
b. unbound moisture
c. moisture
d. total moisture
Q. Dryers heated by dielectric, radiant or microwave energy are
a. adiabatic
b. non-adiabatic
c. isobaric
d. isothermal
Q. Which one of the following is best suited for heat sensitive feed?
a. freeze-drying
b. flash drying
c. furnace drying
d. ice drying
Q. Which one of the following batch-type dryer is the most versatile one, which can handle fouling to sensitive fluids?
a. drum dryer
b. pan – dryer
c. agitated dryer
d. furnace dryer
Q. What is the name of the following dryer?
a. drum dryer
b. pan – dryer
c. agitated vacuum dryer
d. furnace dryer
Q. Statement 1: Freezing with nitrogen or carbon dioxide gas is rapid freezing. Statement 2: Super cooling is a property of food products.
a. true, false
b. true, true
c. false, false
d. false, true