Post-Harvest Technology MCQs

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1. : What is the main objective of post-harvest technology?
(A) To increase crop production
(B) To minimize losses and maintain quality after harvest
(C) To reduce cost of farming
(D) To improve soil fertility

2. : Which gas is mainly responsible for fruit ripening?
(A) Oxygen
(B) Carbon dioxide
(C) Ethylene
(D) Nitrogen

3. : Which method is used to slow down the respiration rate of fruits?
(A) High temperature storage
(B) Controlled atmosphere storage
(C) Sun drying
(D) Blanching

4. : The process of removing field heat from harvested produce is called?
(A) Cooling
(B) Pre-cooling
(C) Refrigeration
(D) Freezing

5. : Which of the following is a climacteric fruit?
(A) Mango
(B) Grape
(C) Strawberry
(D) Orange

6. : Wax coating on fruits is mainly used for?
(A) Enhancing color
(B) Reducing moisture loss and respiration
(C) Killing microorganisms
(D) Increasing sweetness

7. : Which temperature range is most suitable for cold storage of apples?
(A) 15–20 °C
(B) 0–4 °C
(C) –18 °C
(D) 25–30 °C

8. : The main cause of spoilage in cereals during storage is?
(A) Enzymatic browning
(B) Fungal attack
(C) Chlorophyll degradation
(D) Respiration

9. : Which of the following is NOT a post-harvest operation?
(A) Harvesting
(B) Weeding
(C) Grading
(D) Packaging

10. : Which method is commonly used for drying of grains?
(A) Spray drying
(B) Sun drying
(C) Freeze drying
(D) Osmotic drying

11. : The process of sorting produce based on size, shape, or quality is called?
(A) Harvesting
(B) Grading
(C) Cleaning
(D) Processing

12. : The shelf life of fresh fruits and vegetables mainly depends on?
(A) Respiration rate
(B) Soil type
(C) Color
(D) Taste

13. : Modified Atmosphere Packaging (MAP) helps in?
(A) Increasing respiration rate
(B) Extending shelf life
(C) Enhancing enzymatic browning
(D) Reducing sweetness

14. : Which vitamin is most sensitive to post-harvest losses?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin K

15. : The main principle of hermetic storage is?
(A) Complete removal of water
(B) Air-tight storage to limit oxygen
(C) Use of chemicals
(D) Refrigeration

16. : Controlled atmosphere storage of apples is mainly used to reduce?
(A) Moisture content
(B) Ethylene production
(C) Respiration rate
(D) Vitamin content

17. : Which storage structure is commonly used for bulk grain storage?
(A) Cold store
(B) Silo
(C) Warehouse
(D) Crates

18. : The process of heating grains to kill insects is called?
(A) Fumigation
(B) Parboiling
(C) Blanching
(D) Pasteurization

19. : A major cause of post-harvest losses in fruits is?
(A) Pests and diseases
(B) Fertilizer application
(C) Soil erosion
(D) Crop rotation

20. : Which fruit is commonly stored under low temperature and high humidity?
(A) Mango
(B) Banana
(C) Apple
(D) Papaya

21. : The main aim of grading in post-harvest handling is to?
(A) Improve soil fertility
(B) Increase market value
(C) Reduce production
(D) Enhance pesticide use

22. : Which chemical is commonly used for delaying ripening of bananas?
(A) Calcium carbide
(B) Ethylene
(C) 1-MCP (1-methylcyclopropene)
(D) Carbon dioxide

23. : In cereals, insect infestation during storage is higher in conditions of?
(A) Low temperature and low humidity
(B) High temperature and high humidity
(C) Low temperature and high humidity
(D) Cold storage

24. : The post-harvest practice of removing dirt, dust, and foreign matter from produce is called?
(A) Sorting
(B) Cleaning
(C) Grading
(D) Packaging

25. : The main purpose of post-harvest technology is to ensure?
(A) Food security and quality
(B) High fertilizer use
(C) Rapid ripening
(D) Faster harvesting