MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
A given piece of land is said to be waterlogged when: |
| A. | none of the above |
| B. | capillary fringe reaches the root zone of plants |
| C. | gravity drainage has ceased |
| D. | the permanent wilting point is reached |
| Answer» C. gravity drainage has ceased | |
| 2. |
If the Sodium Adsorption Ratio of the irrigation water is 11, then it is classified as: |
| A. | Low sodium water |
| B. | Medium Sodium Water |
| C. | High Sodium Water |
| D. | Very High sodium water |
| Answer» C. High Sodium Water | |
| 3. |
A tile drainage system draining 12 hectares flows at a design capacity for two days, following a storm. If the system is designed using a D.C. of 1.25 cm, how many cubic meters of water will be removed during this period? |
| A. | 12500 m3 |
| B. | 3000 m3 |
| C. | 1250 m3 |
| D. | 1500 m3 |
| Answer» C. 1250 m3 | |
| 4. |
Presence of ______ in water enhances the process of leaching. |
| A. | Nitrogen |
| B. | Carbon di-oxide |
| C. | Sulphur |
| D. | Sulphur-di-oxide |
| Answer» C. Sulphur | |
| 5. |
A land is said to be water-logged, when |
| A. | The land is necessarily submerged under standing water |
| B. | There is a flowing water over the land |
| C. | The pH of the soil becomes as high as 8.5 |
| D. | The soil pores in the root zone get saturated with water, either by the actual watertable or by its capillary fringe |
| E. | The pH of the soil becomes as low as 6 |
| Answer» E. The pH of the soil becomes as low as 6 | |
| 6. |
Due to water logging of an area: ______. |
| A. | Soil temperature falls |
| B. | Salt content decreases |
| C. | Carrying out cultivation operations becomes easier |
| D. | Decrease in wild vegetation is observed |
| Answer» B. Salt content decreases | |
| 7. |
Preventing rain water to run-off and its accumulation and deposition for re-use on site is called |
| A. | rain water collection |
| B. | micro-dams |
| C. | micro-accumulation |
| D. | rain water harvesting |
| Answer» E. | |
| 8. |
Creation of anaerobic condition in the crop root-zone may be due to |
| A. | poor soil condition |
| B. | water logging |
| C. | excessive sunlight |
| D. | bad fertilizer |
| Answer» C. excessive sunlight | |
| 9. |
Irrigation water having Sodium Absorption Ratio (SAR) of 12 is classified as |
| A. | low sodium water |
| B. | Medium sodium water |
| C. | high sodium water |
| D. | very high sodium water |
| Answer» C. high sodium water | |
| 10. |
Consider the following statements regarding water logging:1. Water logging is rise of groundwater table leading to possible increase in salinity resulting in a reduction in the yield of crops2. Water logging cannot be eliminated in certain areas but can be controlled only if the quantity of water percolating into that soil is checked and reducedWhich of the above statements is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 11. |
Lime stabilization is most commonly used for stabilizing: |
| A. | Cement |
| B. | Sands |
| C. | Clays |
| D. | Bitumen |
| Answer» D. Bitumen | |
| 12. |
A land is known as waterlogged when |
| A. | Gravity drainage has ceased |
| B. | Permanent wilting point is reached |
| C. | The soil becomes completely saturated |
| D. | Capillary fringe reaches the root zone of the plant |
| Answer» E. | |
| 13. |
Consider the following data for a drain: L = 50 m, a = 10 m, b = 10.3 m, and k = 1 × 10-5 m/sIf the drains carry 1% of average annual rainfall in 24 hrs, the average annual rainfall for which this system has been designed will be |
| A. | 78 cm |
| B. | 84 cm |
| C. | 90 cm |
| D. | 96 cm |
| Answer» C. 90 cm | |