Agricultural Processing and Food Engineering MCQs

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1. : Which drying method is most commonly used for producing milk powder?
(A) Freeze drying
(B) Spray drying
(C) Sun drying
(D) Tunnel drying

2. : The process of partial cooking of vegetables before freezing is known as?
(A) Boiling
(B) Extrusion
(C) Blanching
(D) Sterilization

3. : Pasteurization was first applied to which product?
(A) Juice
(B) Beer
(C) Milk
(D) Meat

4. : The optimum cold storage temperature for fruits and vegetables is?
(A) 25–30 °C
(B) 0–5 °C
(C) Below –20 °C
(D) 15–20 °C

5. : Which equipment is used for size reduction of grains?
(A) Spray dryer
(B) Extruder
(C) Hammer mill
(D) Pasteurizer

6. : The process of converting milk into curd is called?
(A) Sterilization
(B) Fermentation
(C) Concentration
(D) Pasteurization

7. : Which packaging material is best for carbonated beverages?
(A) Glass bottles
(B) Wooden crates
(C) Jute bags
(D) Paper

8. : The main principle of filtration in food processing is based on?
(A) pH control
(B) Particle size separation
(C) Temperature gradient
(D) Density difference

9. : Aseptic packaging means?
(A) Packaging sterilized product in sterilized container
(B) Packaging at normal temperature
(C) Freezing after packaging
(D) Using wooden boxes only

10. : Which of the following is a non-thermal method of food preservation?
(A) Irradiation
(B) Canning
(C) Pasteurization
(D) Blanching

11. : In rice milling, removal of husk produces?
(A) White rice
(B) Broken rice
(C) Rice bran
(D) Brown rice

12. : Which preservation technique is most suitable for meat products?
(A) Spray drying
(B) Milling
(C) Blanching
(D) Refrigeration and freezing

13. : The main principle of microwave heating is?
(A) Pressure difference
(B) Electromagnetic waves
(C) Sound waves
(D) Mechanical vibration

14. : Which processing method involves heat sterilization in sealed containers?
(A) Irradiation
(B) Freezing
(C) Canning
(D) High-pressure processing

15. : Enzyme pectinase is used in fruit juice processing for?
(A) Clarification of juice
(B) Preservation
(C) Pasteurization
(D) Increasing acidity

16. : The freezing point of pure water is?
(A) 0 °C
(B) –5 °C
(C) 5 °C
(D) –10 °C

17. : The major by-product of sugar industry is?
(A) Molasses
(B) Whey
(C) Gluten
(D) Rice bran

18. : Which of the following is an example of mechanical separation?
(A) Centrifugation
(B) Freezing
(C) Pasteurization
(D) Sterilization

19. : Fluidized bed dryers are widely used for drying?
(A) Grains
(B) Meat
(C) Vegetables
(D) Milk

20. : The main purpose of extrusion cooking is to produce?
(A) Expanded products like snacks
(B) Nutrient-rich food
(C) Dried powders
(D) Preserved foods

21. : Freezing preserves food mainly by?
(A) Reducing enzyme activity and microbial growth
(B) Killing microorganisms instantly
(C) Changing color and flavor
(D) Increasing nutrient content

22. : The main purpose of hermetically sealed cans is to?
(A) Add flavor
(B) Increase color intensity
(C) Prevent entry of microorganisms
(D) Reduce cost

23. : The main objective of food processing is to?
(A) Preserve food and increase shelf life
(B) Make food less nutritious
(C) Reduce demand for food
(D) Increase production cost

24. : Which component is removed during oil refining?
(A) Protein
(B) Free fatty acids
(C) Starch
(D) Cellulose

25. : Which is considered a thermal processing method?
(A) High-pressure processing
(B) Freezing
(C) Irradiation
(D) Canning