MCQOPTIONS
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MCQOPTIONS
This section includes 15 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 type of moisture acts as a bridge between soil moisture content and field capacity? |
| A. | Equivalent Moisture |
| B. | Soil Moisture Deficiency |
| C. | Available Moisture |
| D. | Readily Available Moisture |
| Answer» C. Available Moisture | |
| 2. |
Which type of moisture is slightly less or most equal to field capacity? |
| A. | Equivalent Moisture |
| B. | Soil Moisture Deficiency |
| C. | Available Moisture |
| D. | Readily Available Moisture |
| Answer» B. Soil Moisture Deficiency | |
| 3. |
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% |
| Answer» C. 70 to 80% | |
| 4. |
What is the name of actual available water to the plants? |
| A. | Available Moisture |
| B. | Moisture |
| C. | Capillary Water |
| D. | Hygroscopic Water |
| Answer» B. Moisture | |
| 5. |
Up to which point plants can extract water? |
| A. | Saturation Point |
| B. | Permanent Wilting Point |
| C. | Hydration Point |
| D. | Dissolution Point |
| Answer» C. Hydration Point | |
| 6. |
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 m<sup>3</sup> |
| B. | 36 m<sup>3</sup> |
| C. | 36.12 m<sup>3</sup> |
| D. | 36.25m<sup>3</sup> |
| Answer» B. 36 m<sup>3</sup> | |
| 7. |
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 m<sup>2</sup> |
| B. | 2.135 m<sup>2</sup> |
| C. | 2.125 m<sup>2</sup> |
| D. | 2.25 m<sup>2</sup> |
| Answer» B. 2.135 m<sup>2</sup> | |
| 8. |
Capillary water is available to plants and hygroscopic water is not. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Based on loose chemical bonds, what is the name of the part of field capacity water? |
| A. | Hygroscopic Water |
| B. | Gravity Water |
| C. | Capillary Water |
| D. | Residue Water |
| Answer» B. Gravity Water | |
| 10. |
Based on surface tension, what is the name of the part of field capacity water? |
| A. | Hygroscopic Water |
| B. | Gravity Water |
| C. | Capillary Water |
| D. | Residue Water |
| Answer» D. Residue Water | |
| 11. |
By what type of forces the soil grains retain water on their surfaces? |
| A. | Capillary Forces |
| B. | Cohesive Forces |
| C. | Molecular Attraction and by Loose Chemical Bonds |
| D. | Compressive Forces |
| Answer» D. Compressive Forces | |
| 12. |
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. | |
| 13. |
Field capacity is different from gravity water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
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 | |
| 15. |
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 | |