MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 138 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which one below is an example of the overlapping crop? |
| A. | Tobacco |
| B. | Wheat |
| C. | Millets |
| D. | Sugarcane |
| Answer» E. | |
| 2. |
Which protein in the leaf of the plant utilize carbon dioxide and produce carbohydrates? |
| A. | Chloroplasts |
| B. | Stomata |
| C. | Xylene |
| D. | Leaf |
| Answer» B. Stomata | |
| 3. |
The quantity of water beneficially used is the sum of the water used by the crops and the water used for leaching. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 4. |
What are the climatic conditions required for growing rice? |
| A. | Fertile clay soil, 70-200 cm rainfall, temperature 20°C-27°C |
| B. | Fertile soil, 50-75 cm rainfall, temperature 20°C-25°C |
| C. | Nitrogen-rich soil, 50-80 cm rainfall, temperature 25°C-30°C |
| D. | Sulfur-rich soil, 150-200 cm rainfall, temperature 15°C-20°C |
| Answer» B. Fertile soil, 50-75 cm rainfall, temperature 20°C-25°C | |
| 5. |
Given that a particular crop requires about 20 cm depth of water at an interval of 40 days, and the base period is 400 days. Find the delta for the crop? Now using this delta find the duty of water for the crop? |
| A. | 150 cm, 1150 hectares/cumec |
| B. | 180 cm, 1825 hectares/cumec |
| C. | 200 cm, 1728 hectares/cumec |
| D. | 195 cm, 1920 hectares/cumec |
| Answer» D. 195 cm, 1920 hectares/cumec | |
| 6. |
On what factor does transpiration ratio depends on? |
| A. | Water |
| B. | Soil |
| C. | Air |
| D. | Moisture |
| Answer» B. Soil | |
| 7. |
How can we improve the duty of water? |
| A. | Lining of Canals |
| B. | Construction of Weir |
| C. | Construction of Dam |
| D. | Check Dams |
| Answer» B. Construction of Weir | |
| 8. |
Which efficiency is also called on-farm efficiency? |
| A. | Water conveyance efficiency |
| B. | Water application efficiency |
| C. | Water storage efficiency |
| D. | Water use efficiency |
| Answer» C. Water storage efficiency | |
| 9. |
Which of the following is not a top Cotton growing state in India? |
| A. | Gujarat |
| B. | Maharashtra |
| C. | Andhra Pradesh |
| D. | Bihar |
| Answer» E. | |
| 10. |
Transpiration process is an integral part of the main process called photosynthesis. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 11. |
The mean depth of water is 1.5 cm and the mean deviation from the mean is 0.1 cm. Determine its distribution efficiency. |
| A. | 15% |
| B. | 85% |
| C. | 66.66% |
| D. | 93% |
| Answer» E. | |
| 12. |
Which factor doesn’t influence the root zone depth? |
| A. | Type of soil |
| B. | Type of crops grown |
| C. | Sub-soil formation |
| D. | The yield of the crop |
| Answer» E. | |
| 13. |
The monthly consumptive use values for paddy are 26.69, 8.76, 14.38, 22.73, 21.29, 25.50 and 15.06 for the duration of month from June to July. What is the average daily consumptive use? |
| A. | 7.0 mm |
| B. | 8.0 mm |
| C. | 7.5 mm |
| D. | 8.5 mm |
| Answer» D. 8.5 mm | |
| 14. |
The quantity of water that is pumped into a farm distribution system is 2 cumec. 1.6 cumec is delivered to a turn-out, 1km from the well. Compute the conveyance efficiency. |
| A. | 80% |
| B. | 20% |
| C. | 50% |
| D. | 60% |
| Answer» B. 20% | |
| 15. |
Which of the following is not an empirical method of determining consumptive use? |
| A. | Lowry Johnson method |
| B. | Penman’s equation |
| C. | Hargreaves method |
| D. | Inflow-outflow method |
| Answer» E. | |
| 16. |
The value of consumptive use may be different for different crops and different for the same crop at different times and places. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 17. |
Total transpiration about 95% occurs during the day alone. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 18. |
What is the field irrigation requirement (FIR)? |
| A. | The water required to meet the evaporation needs of a crop |
| B. | Amount of water required to delivered at the field to meet evapotranspiration and leaching needs |
| C. | Amount of water required to meet the net irrigation requirements plus water lost due to surface runoff and percolation |
| D. | Amount of water required to meet the field irrigation requirements plus water lost in conveyance through the canal system |
| Answer» D. Amount of water required to meet the field irrigation requirements plus water lost in conveyance through the canal system | |
| 19. |
Which of the following statement is not correct about Effective rainfall? |
| A. | It doesn’t take into consideration precipitation lost through deep percolation |
| B. | It satisfies evapotranspiration needs of the crop |
| C. | It includes surface runoff loss |
| D. | It doesn’t include surface runoff water loss |
| Answer» D. It doesn’t include surface runoff water loss | |
| 20. |
An outlet irrigates an area of 40 ha. The discharge required at this outlet to meet the evapotranspiration requirement of 40 mm occurring uniformly in 40 days neglecting other field losses is _________ |
| A. | 4.52 litres / sec |
| B. | 2.31 litres / sec |
| C. | 4.01 litres / sec |
| D. | 1.52 litres / sec |
| Answer» B. 2.31 litres / sec | |
| 21. |
What is the correct representation for the calculation of NIR? |
| A. | Cᵤ – Rₑ |
| B. | CIR + leaching losses |
| C. | FIR + conveyance losses |
| D. | FIR + leaching losses + conveyance losses |
| Answer» C. FIR + conveyance losses | |
| 22. |
Heavy retentive soil is favorable for which type of crop? |
| A. | Sugarcane and Rice |
| B. | Maize |
| C. | Gram and fodder crops |
| D. | Cotton |
| Answer» B. Maize | |
| 23. |
Groundnut requires paleo watering before sowing. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 24. |
The presence of excess salts in the soil requires _____________ |
| A. | high water storage efficiency |
| B. | low water storage efficiency |
| C. | high water application efficiency |
| D. | high water use efficiency |
| Answer» B. low water storage efficiency | |
| 25. |
Which method is widely used in India for the computation of consumptive use? |
| A. | Penman’s equation |
| B. | Hargreaves – Christiansen equation |
| C. | Blaney-Criddle equation |
| D. | Tanks and lysimeter |
| Answer» B. Hargreaves – Christiansen equation | |
| 26. |
The monthly consumptive use is given by _____________ |
| A. | Cᵤ = k.p/40 [1.8t + 32] |
| B. | Cᵤ = k.p/40 [1.8t – 32] |
| C. | Cᵤ = k.p/40 [t + 32] |
| D. | Cᵤ = k.p/40 [t – 32] |
| Answer» B. Cᵤ = k.p/40 [1.8t – 32] | |
| 27. |
Which of the following statement is wrong about consumptive use coefficient? |
| A. | It is different for different crops |
| B. | It varies with the crop growth |
| C. | It is different for the same crop at different places |
| D. | It is independent of the crop type and its growth |
| Answer» E. | |
| 28. |
What are the dimensions of the standard class-A pan? |
| A. | Diameter-1.2 m, Depth – 25 cm |
| B. | Diameter-2 m, Depth – 25 cm |
| C. | Diameter-2 m, Depth – 30 cm |
| D. | Diameter-1.2 m, Depth – 30 cm |
| Answer» B. Diameter-2 m, Depth – 25 cm | |
| 29. |
Determine the pan evaporation from the following data using the Christiansen method.Extra-terrestrial radiation in cm = 47.3 cmCoefficient of temperature(Cₜ) = 1.403Coefficient for wind velocity (Cw)= 1.2Coefficient for relative humidity (Cₕ) = 1Coefficient for percent of possible sunshine(Cₛ) = 1.073Coefficient of elevation(Cₑ) = 1.014 |
| A. | 40 cm |
| B. | 30.44 cm |
| C. | 39.8 cm |
| D. | 37.98 cm |
| Answer» D. 37.98 cm | |
| 30. |
Albedo or reflection coefficient factor is used in which method? |
| A. | Blaney- Criddle equation |
| B. | Christiansen equation |
| C. | Penman equation |
| D. | Tank and Lysimeter method |
| Answer» D. Tank and Lysimeter method | |
| 31. |
Compute the total consumptive use for a drainage basin by Penman’s formula. The slope of saturation vapour pressure V/s chart at 40°C is 2.95 mm of Hg/°C and the net incoming solar radiation is 5.705 mm of evaporative water/day. Assume, Eₐ = 18.07 mm/day and Psychrometric constant = 0.49 mm of Hg/°C. |
| A. | 17.01 mm/day |
| B. | 18 mm/day |
| C. | 11.07 mm/day |
| D. | 20.45 mm/day |
| Answer» B. 18 mm/day | |
| 32. |
How many days are generally taken to obtain field capacity after free gravity drainage? |
| A. | 3 to 7 days |
| B. | 4 to 8 days |
| C. | 5 to 9 days |
| D. | 2 to 5 days |
| Answer» E. | |
| 33. |
Which zone is the most important from an irrigation point of view? |
| A. | Soil Zone |
| B. | Intermediate Zone |
| C. | Capillary Zone |
| D. | Saturation Zone |
| Answer» B. Intermediate Zone | |
| 34. |
Determine the field capacity, when the unit weight of water is 9.8 KN/m³, and volume of water stored in unit area of soil is 28 m³, the dry unit weight of soil is 18 KN/m³, and the depth of root zone of the plant is 7 m. |
| A. | 2.178 m² |
| B. | 2.135 m² |
| C. | 2.125 m² |
| D. | 2.25 m² |
| Answer» B. 2.135 m² | |
| 35. |
A crop is being tested in the lab to its loss due to transpiration. Given that initial weight of instrument is 100 kgs, and final mass of instrument is 150 kgs. The amount of water added during full growth of plant is 70 kgs. Find the loss due transpiration when the method used is phytometer method? |
| A. | 20 kgs |
| B. | 15 kgs |
| C. | 25 kgs |
| D. | 10 kgs |
| Answer» B. 15 kgs | |
| 36. |
In transpiration ratio what type of crop is considered to be weighed, for mass of dry matter produced? |
| A. | Marketed Crop |
| B. | Cash Crop |
| C. | Horticulture Crop |
| D. | Plantation Crop |
| Answer» B. Cash Crop | |
| 37. |
Which type of soil has less ratio of AET/PET than the other? |
| A. | Clayey Soil |
| B. | Sandy Soil |
| C. | Alluvial Soil |
| D. | Black Soil |
| Answer» C. Alluvial Soil | |
| 38. |
By what number should the value from the phytometer method be multiplied when it comes to obtain possible field results? |
| A. | 5 |
| B. | 6 |
| C. | 9 |
| D. | A Constant Number |
| Answer» E. | |
| 39. |
The water distribution efficiency is 1.0 if _____________ |
| A. | the deviation from the mean depth is 1 |
| B. | the deviation from the mean depth is 0 |
| C. | the deviation from the mean depth is less than 1 |
| D. | the deviation from the mean depth is greater than 1 |
| Answer» C. the deviation from the mean depth is less than 1 | |
| 40. |
The productivity of crop increases with water reaches a maximum value then, falls down. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 41. |
What is the range of reflection coefficient for close-grained crops? |
| A. | 0.15-0.25 |
| B. | 0.05-0.45 |
| C. | 0.05 |
| D. | 0.45-0.90 |
| Answer» B. 0.05-0.45 | |
| 42. |
Determine the volume of water stored in unit area if unit weight of water is 9.8 KN/m³, dry unit of soil is 17 KN/m³, field capacity (F) is 2.35 m², and depth of root zone of the plant is 9 m. |
| A. | 36.69 m³ |
| B. | 36 m³ |
| C. | 36.12 m³ |
| D. | 36.25 m³ |
| Answer» B. 36 m³ | |
| 43. |
What is the name of water which flows under gravity? |
| A. | Hygroscopic Water |
| B. | Gravity Water |
| C. | Capillary Water |
| D. | Residue Water |
| Answer» C. Capillary Water | |
| 44. |
At which point in the entire canal system the duty of water will be more? |
| A. | Head of the Water-course |
| B. | Head of the Minor |
| C. | Head of the Distributary |
| D. | Head of the Branch |
| Answer» B. Head of the Minor | |
| 45. |
Which factor directly affects the duty of water? |
| A. | Type of Crop |
| B. | Useful Rainfall |
| C. | Type of Soil |
| D. | Canals |
| Answer» C. Type of Soil | |
| 46. |
In crop-rotation, a cash crop may be followed by a fodder crop, which is then followed by soil renovating crop like ________ |
| A. | Rice |
| B. | Maize |
| C. | Oats |
| D. | Grams and pulses |
| Answer» E. | |
| 47. |
What is the other name of perennial irrigation system? |
| A. | Direct Irrigation |
| B. | Storage Irrigation |
| C. | Controlled Irrigation |
| D. | Flood Irrigation |
| Answer» D. Flood Irrigation | |
| 48. |
Natural sub-irrigation comes under Sub-surface irrigation. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 49. |
Which of the following type of irrigation system is practised on small scale in India? |
| A. | Natural sub-irrigation |
| B. | Artificial sub-irrigation |
| C. | Flood Irrigation |
| D. | Lift Irrigation |
| Answer» C. Flood Irrigation | |
| 50. |
What type of irrigation method is also called as trickle irrigation? |
| A. | Sprinkler Irrigation Method |
| B. | Furrow Irrigation Method |
| C. | Drip Irrigation Method |
| D. | Check Flooding |
| Answer» D. Check Flooding | |