Storage Structures (Grain Silos, Godowns) MCQs

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1. : The main purpose of grain storage structures is to?
(A) Increase grain moisture
(B) Prevent losses due to pests, rodents, and weather
(C) Improve grain color only
(D) Increase post-harvest cost

2. : A vertical cylindrical structure used for bulk grain storage is called?
(A) Warehouse
(B) Silo
(C) Shed
(D) Godown

3. : Godowns are generally used for storing?
(A) Bulk grain in loose form
(B) Bagged grain and produce
(C) Only liquid products
(D) Only fertilizers

4. : The optimum moisture content for safe storage of paddy is about?
(A) 8%
(B) 12–14%
(C) 18%
(D) 25%

5. : The safe storage relative humidity for most food grains should be below?
(A) 70%
(B) 85%
(C) 90%
(D) 100%

6. : Which type of silo is commonly used for short-term on-farm storage?
(A) Tower silo
(B) Trench silo
(C) Bunker silo
(D) Flat bottom silo

7. : The primary cause of spoilage in improperly stored grains is?
(A) Low temperature
(B) High moisture and insect activity
(C) Lack of sunlight
(D) High protein content

8. : The minimum thickness of concrete floors in godowns is generally kept at?
(A) 5 cm
(B) 10 cm
(C) 15 cm
(D) 25 cm

9. : The bag capacity of a standard Central Warehousing Corporation godown is usually around?
(A) 50–100 MT
(B) 500–1000 MT
(C) 5,000–10,000 MT
(D) 50,000 MT

10. : Which of the following is NOT a desirable feature of grain storage structures?
(A) Moisture-proof walls
(B) Pest-proof design
(C) Proper ventilation
(D) Cracks and crevices in walls

11. : The function of fumigation in storage godowns is to?
(A) Dry grains
(B) Control insect pests
(C) Improve germination
(D) Reduce temperature

12. : In a metal silo, the main structural load on the wall is due to?
(A) Wind load only
(B) Grain pressure
(C) Roof weight only
(D) Temperature changes

13. : The capacity of small farm silos is generally in the range of?
(A) 1–2 MT
(B) 10–50 MT
(C) 100–500 MT
(D) 1,000–5,000 MT

14. : Godown floors are usually raised above ground level to?
(A) Save construction material
(B) Protect from dampness and flooding
(C) Improve aesthetics
(D) Increase roof load

15. : The main advantage of concrete silos over metal silos is?
(A) Higher mobility
(B) Higher durability and thermal stability
(C) Easy relocation
(D) Lower construction time

16. : Which of the following storage structures is most suitable for village-level storage?
(A) Underground pit
(B) Steel silo
(C) Godown
(D) Tower silo

17. : In grain godowns, stack height of bags is usually restricted to?
(A) 3–4 bags
(B) 6–8 bags
(C) 10–12 bags
(D) 20 bags

18. : Rat guards in godowns are provided in order to?
(A) Reduce ventilation
(B) Prevent rodent entry
(C) Increase load capacity
(D) Control moisture

19. : The recommended width of alleyways in large godowns is?
(A) 0.5 m
(B) 1.0 m
(C) 2.0 m
(D) 5.0 m

20. : The most effective method for long-term storage of food grains is?
(A) Bag storage in godowns
(B) Bulk storage in silos
(C) Open-air storage
(D) Heap storage under tarpaulin

21. : The main disadvantage of bag storage in godowns is?
(A) Higher construction cost
(B) More labor required for handling
(C) Poor accessibility
(D) No need for fumigation

22. : Which of the following is a temporary storage method?
(A) RCC silo
(B) Godown
(C) Cover and plinth (CAP) storage
(D) Steel silo

23. : In silo design, Janssen’s equation is used to calculate?
(A) Airflow rate
(B) Lateral pressure of grain on silo walls
(C) Thermal conductivity
(D) Roof load

24. : The ideal temperature for safe storage of grains is around?
(A) 5–10°C
(B) 15–20°C
(C) 25–30°C
(D) 40°C

25. : The main difference between silos and godowns is?
(A) Silos are for bulk storage, godowns for bag storage
(B) Silos are temporary, godowns permanent
(C) Silos are cheaper than godowns
(D) Godowns are used only for liquids