108 Irrigation Engineering Chapter Wise McQ Test of 25 Question #3 Irrigation Engineering Chapter Wise McQ Test of 25 Question for PSC, NEC, UPSC, SSC and Many more. 1 / 25 1. Point out the incorrect statement, out of the following: A. salinity is caused by water-logging B. water logging is not caused by salinity C. salinity subsides, when once the water logging is removed D. none of the above 2 / 25 2. Which zone is the most important from an irrigation point of view? A. Soil Zone B. Intermediate Zone C. Capillary Zone D. Saturation Zone 3 / 25 3. A part of water which will move out of the soil, if proper drainage is provided, is known as A. hygroscopic water B. capillary water C. Gravitational water D. All of the above 4 / 25 4. Super-fluous water is also called A. capillary water B. gravitational water C. hygroscopic water D. all of these 5 / 25 5. Water present in the soil which cannot be removed except by heating is called A. gravity water B. capillary water C. hygroscopic water D. Free water 6 / 25 6. The top of the capillary zone A. Lies below the water table at every point B. Lies above the water table at every point C. Coincides the water table at every point D. None of these 7 / 25 7. Pick up the correct statement from the following: A. Gravity water is harmful to crops B. Hygroscopic water remains attached to soil molecules by chemical bond C. Capillary moisture held in the soil pores against gravity by surface tension, is utilized by plants D. All the above 8 / 25 8. A useful soil moisture for plant growth is A. Capillary water B. Gravitational water C. Hygroscopic water D. All of these 9 / 25 9. A part of water which exists in the porous space of the soil by molecular attraction, is known as A. capillary water B. gravitational water C. hygroscopic water D. all of these 10 / 25 10. A useful soil moisture for plant growth is A. capillary water B. gravitational water C. hygroscopic water D. all of these 11 / 25 11. A plant growth the useful soil moisture is obtained from A. Gravitational water B. Hygroscopic water C. Capillary water D. Rain water 12 / 25 12. When an oven-dried sample of soil is kept open in the atmosphere, it absorbs some amount of water. This water is known as A. capillary water B. gravitational water C. hygroscopic water D. all of these 13 / 25 13. By what percentage of available moisture is easily extracted by plants? A. 80 to 90% B. 75 to 80% C. 70 to 80% D. 65 to 70% 14 / 25 14. The state of the soil when plants fail to extract sufficient water for their requirements, is A. maximum saturated point B. permanent wilting point C. ultimate utilization point D. None of these 15 / 25 15. Permanent wilting point moisture content for a crop represents the: A. hygroscopic water B. capillary water C. field capacity water D. Available water 16 / 25 16. With the increase in supplied irrigation water, the yield of crops: A. increases continuously B. decreases continuously C. increases up to a certain limit, and then becomes constant D. Increases up to a certain limit, and then decreases 17 / 25 17. For healthy growth Soil moisture content A. Less than field capacity B. More than field capacity C. Equal field capacity D. All of these 18 / 25 18. For healthy growth Soil moisture content A. Slightly than field capacity B. More than field capacity C. Equal field capacity D. All of these 19 / 25 19. The field capacity of a soil depends upon A. Capillary tension in soil B. Porosity of soil C. Both (a) and (b) D. Neither (a) nor (b) 20 / 25 20. The useful moisture of soil, is equal to its A. Field capacity B. Saturation capacity C. Moisture content at permanent wilting point D. Difference between filed capacity and permanent wilting point within the root zone of plants 21 / 25 21. Consumptive use of a crop is defined as the A. total amount of water applied to the crop during its life period B. total amount of water applied minus the total rainfall during its life period C. total amount of water utilized by the crop for its evapo-transpiration requirements D. Total amount of water used in the plant metabolism 22 / 25 22. The water required by crop for its growth is called as A. FIR B. NIR C. Consumptive use D. GIR 23 / 25 23. The water that should be available in field is called A. NIR B. FIR C. GIR D. CIR 24 / 25 24. 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 25 / 25 25. When there is no percolation loss for leaching and other such soil needs, then the Net irrigation requirement (NIR) of a cropped area, will be equal to: A. the consumptive use (Cu) B. Cu -Re C. Cu +Re D. none of the above Your score is The average score is 47% 0% Restart quiz Exit civil engineerirrigation engineeringmcqcivilmock testnecpscupsc
