Top 150+ Solved Principles of Food Preservation MCQ Questions Answer
Q. Which of the following is untrue?
a. it is difficult to predict the electric field intensity inside a food material
b. design of oven plays an important role in determining the electric filed intensity in a food material
c. orientations of microwaves is an important role
d. none of the mentioned
Q. Hannah heats refrigerated rice which has been devoid of moisture and become dry. She heats it in a microwave. It gets unevenly heated. What should she do?
a. water should be added for even heating
b. she should heat it using equipment that offers conduction or convection
c. none of the mentioned
d. all of the mentioned
Q. Although microwave heating can be used for drying of food containing uneven water content, it is isn’t done for certain food products like garlic. Why?
a. no pasteurization
b. essential oils being stripped off
c. none of the mentioned
d. no pasteurization & essential oils being stripped off
Q. Microwave heating is good for puffed products. Why?
a. the rate of heat transfer is less than the rate of moisture loss
b. the heat transfer in these food items takes place so fast that instead of shrinking of the food items due to loss of moisture content, they stay intact and hence puffed
c. none of the mentioned
d. all of the mentioned
Q. Which of the following is NOT a part of the microwave heating system?
a. magnetron
b. anode
c. cathode
d. none of the mentioned
Q. Which of the following law gives the relationship between the moles of water and the moles of solute in a solution and its water activity?
a. hallinan law
b. burgess law
c. raoult’s law
d. none of the mentioned
Q. 85 for food items is considered to be very dry for substances.
a. true, false
b. true, true
c. false, false
d. false, true
Q. Which of the following is true when a solute is added to water?
a. concentration of water is increased
b. interaction with solute may break or increase the water structures
c. none of the mentioned
d. neither of the mentioned
Q. Select the incorrect statement from the following option.
a. osmosis is the phenomenon by virtue of which flow of solvent takes placefrom low concentration to high concentration through a semi-permeable membrane
b. the flow continues till the concentration is equal on both the sides
c. the driving force of osmosis is osmotic pressure
d. osmosis is used for the treatment of waste water