RAEO Questions: Horticulture, Agronomy and Agri. Engineering

RAEO Previous Year Questions

Question 01. What is the suitable planting distance for potato?

(a). 60 × 20 cm
(b). 60 × 45 cm
(c). 45 × 20 cm
(d). 45 × 45 cm

Question 02. At present, what is the contribution of agriculture in GDP of India?

(a). 10 – 12%
(b). 16 – 18%
(c). 20 – 22%
(d). None of the above

Question 03. Which is a polyembryonic variety of mango?

(a). Neelam
(b). Ratna
(c). Olour
(d). Amrapali

Question 04. At which stage does the crown root initiation take place in wheat?

(a). At germination stage
(b). After 10 – 12 days
(c). After 14 – 16 days
(d). After 20 – 22 days

Question 05. A sense of equality is implied by which principle of landscape?

(a). Simplicity
(b). Line
(c). Balance
(d). Harmony

Question 06. Why do we use seed plot technique in potato?

(a). To get insect free seeds
(b). To get virus free seeds
(c). To get big size seeds
(d). To get true potato seeds

Question 07. What is the suitable size of pit for mango plantation?

(a). 75 to 100 cm
(b). 40 to 50 cm
(c). 150 to 200 cm
(d). 25 to 400 cm

Question 08. What does “jhuming” mean?

(a). A type of improved machine
(b). Conventional method of cultivation in hilly area
(c). A type of chemical application
(d). Morden technology of fruit plant propagation

Question 09. Which is the commercial propagation method of guava?

(a). Layering
(b). Inarching
(c). Seed
(d). Cutting

Question 10. What were the reasons for the Green Revolution in India?

  1. Improved higj yielding varieties
  2. Use of chemicals fertilizers
  3. Irrigation
  4. Use of unproductive lands
  5. Awareness of farmers

Select your answer

(a). a, c and e
(b). a, b and c
(c). b, d and e
(d). c, d and e

Question 11. Why is ringing or notching useful?

(a). For flowering in branches
(b). For rooting in branches
(c). To remove disease of branches
(d). All of the above

Question 12. What is the suitable dose of NPK for cultivation of potato in CG plains?

(a). 150:100:100
(b). 100:100:100
(c). 75:50:50
(d). 10:75:75

Question 13. At what age does a tea plant start production?

(a). 2 to 3 years
(b). 4 to 5 years
(c). 8 to 9 years
(d). 12 to 13 years

Question 14. What chemical is utilized to break dormancy of potato?

(a). Thiourea
(b). GA
(c). Ethylene chlorohydrin
(d). All of the above

Question 15. Which of the following is the cause of cobweb disease?

(a). Cladobotrym dendroides
(b). Verticillium fungicola
(c). Mycogone perniciosa
(d). Collectotrichum spp

Question 16. Which statement is true with respect to horticulture?

  1. Produces higher biomass than field crops per unit area
  2. Have less potential for foreign exchange
  3. Provides higher employment opportunities
  4. Provides more opportunities for industrialization
  5. Needs less care

Select your answer

(a). 1, 2 and 3
(b). 1, 3 and 4
(c). 2, 3 and 5
(d). 1, 3 and 5

Question 17. Which of the following silk is produced by Bombyx mori?

(a). Mulberry silk
(b). Tasar silk
(c). Oak silk
(d). Eri silk

Question 18. Which is the ideal time for trimming and pruning in rose?

(a). Last week of June to July
(b). August to September
(c). Last week of September to first week of October
(d). October to November

Question 19. What is the commercial propagation method of mangosteen?

(a). Seed
(b). Layering
(c). Inarching
(d). Side grafting

Question 20. What is the probable cause of biennial bearing in mango plant?

(a). C/N ratio
(b). Hormonal balance
(c). Both a and b
(d). None of the above

Question 21. What is the concentration of 2, 4-D for parthenocarpic fruit production in brinjal?

(a). 0.00025%
(b). 0.25%
(c). 2.5%
(d). 0.025%

Question 22. What is the seed rate of soyabean for one ha. area?

(a). 25 to 30 kg
(b). 45 to 50 kg
(c). 75 to 80 kg
(d). 95 to 100 kg

Question 23. What is the optimum thickness of paddy seedling mate?

(a). 15-20 mm
(b). 20-25 mm
(c). 25-30 mm
(d). 30-45 mm

Question 24. In hand chaff cutters, which of the following is used for changing the length of cut?

(a). Knife
(b). Flywheel
(c). Worm
(d). None of the above

Question 25. The compression pressure inside cylinder of a compression ignition engine ranges between:

(a). 25 to 30 kg/cm²
(b). 35 to 45 kg/cm²
(c). 45 to 55 kg/cm²
(d). 55 to 60 kg/cm²

Question 26. Which of the following is the firing order of a 4-stroke, 4 cylinder engine?

(a). 1- 4 – 3 – 2
(b). 1- 2 – 4 – 3
(c). 1- 3 – 4 – 2
(d). 4 – 2 – 3 – 1

Question 27. Which of the following is the benefit of using rotary tiller?

(a). Less wheel slippage
(b). Reduced soil compaction
(c). Both a and b
(d). None of the above

Question 28. What should be the approximate air fuel ratio in a diesel engine?

(a). 12:1
(b). 15:1
(c). 18:1
(d). 20:1

Question 29. Which is a part of thresher?

(a). Concave
(b). Cleaning unit
(c). Cylinder or drum
(d). All of the above

Question 30. Which of the following machine cuts the crop and ties them in suitable size bundles?

(a). VCR
(b). Reaper binder
(c). Combine
(d). Straw reaper

Question 31. What does the blue smoke indicates in an engine cylinder?

(a). Lubricating oil
(b). Water
(c). Diesel
(d). None of the above

Question 32. What is the operating width of a power tiller operated VCR?

(a). 0.75 m
(b). 1.1 m
(c). 1.5 m
(d). 2.0 m

Question 33. Which are the commonly used power transmission systems in a ferti-seed drill?

(a). Chain sproket and gears
(b). Gears and belt pulleys
(c). Belt pulleys and cams
(d). Belt pulley and chain sprocket

Question 34. What is the specific fuel consumption in a diesel engine?

(a). 150 g/bhp – hr
(b). 200 g/bhp – hr
(c). 250 g/bhp – hr
(d). 300 g/bhp – hr

Question 35. Which is not a land development equipment?

(a). Laser guided land leveller
(b). Hydraulic scraper
(c). Tractor mounted terracer blade
(d). None of the above

Question 36. The mechanical efficiency of an engine is the ratio of which of the following?

(a). IHP and BHP
(b). BHP and IHP
(c). BHP and FHP
(d). FHP and BHP

Question 37. What is the standard PTO speed ina tractor?

(a). 540± 10 rpm
(b). 1000± 10 rpm
(c). Both a and b
(d). None of the above

Question 38. What should be the grade of oil used in a tractor engine during the summer?

(a). SAE – 30
(b). SAE – 40
(c). SAE – 60
(d). SAE – 90

Question 39. Which of the following thresher is not equipped with aspirator?

(a). Drummy thresher
(b). Wheat thresher
(c). Paddy thresher
(d). None of the above

Question 40. Which type of fuel is used in a 4-row rice transplanter (Japanese type)?

(a). Automobile regulated gasoline
(b). Diesel
(c). Kerosine oil
(d). None of the above

Question 41. For which crop is a mower designed?

(a). Wheat
(b). Mustard
(c). Paddy
(d). Grasses

Question 42. What is the optimum working temperature of a diesel engine?

(a). 65 to 75°C
(b). 70 to 75°C
(c). 88 to 90°C
(d). Above 90°C

Question 43. Of which plough is the jointer and cutters a part?

(a). Disc plough
(b). Harrow plough
(c). Indigenous plough
(d). M. B. plough