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Irrigation Engineering Practice Test: Water Logged Reclamation and Saline Soils for Agricultural Purposes
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Water Logged Reclamation and Saline Soils for Agricultural Purposes topics include: Salinity, water logging and its causes, surface or open drainage, sub-surface or tile drainage, saline and alkaline lands reclamation. Waterlogging is a condition where an area becomes flooded with water, often due to heavy rainfall or poor drainage. This can have severe consequences for agriculture, transportation, and human settlements. Waterlogged and saline soils can be reclaimed through subsurface drainage (SSD). SSD involves using machines to lay PVC pipes at a certain depth. Saline water collects due... Show more
Irrigation Engineering Practice Test: Water Logged Reclamation and Saline Soils for Agricultural Purposes
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25 Questions

1. What is the pH range for strongly alkaline soils?
2. How many types of structures can be constructed in the fields to remove excess waters?
3. Due to inadequate drainage which factor causes waterlogging with constant percolation?
4. Shallow surface drains are connected to outlet drains.
5. What structure is surrounded around the tile drains when used in less pervious strata?
6. Which of the following factor do not contribute to water-logging?
7. Seepage of water from the adjoining highlands causes waterlogging.
8. What is the name given to the drains used in depressions?
9. In what chemical ways does tile drainage help in plant growth?
10. How many cubic metres of water will be removed for this particular period of a system designed to use a D.C of 1.5 cm draining 20 hectares for a capacity of 5 days?
11. A soil sample has an Exchangeable sodium percentage (ESP) of 16%, its electrical conductivity is 3.2 Milli-Mohs/cm and a pH of 9.5. How is the soil classified?
12. When a canal is taken as an example what factor about it causes waterlogging?
13. Salinity increases the osmotic activity of the plants.
14. Which of the following statement is wrong?
15. Which type of open drains would be fully operative only in rainy season?
16. What type of system does the diagram represent?
Diagram represents a series of depressions connected with shallow surface drains
17. Which factor is concerned with the growth of weeds?
18. Which is the least harmful salt for agricultural soil?
19. The plant roots act as a semi-permeable membrane.
20. If the salt concentration of the irrigation water ranges from 0.5 – 2 g/L, then what is the restriction on its use?
21. Waterlogging is the rise of water table.
22. Under what strata the tile drainage should not be placed?
23. Which factor comes into play when less permeable substratum is present?
24. Which of the following is a remedial measure for water-logging?
25. Which one of the following is not a remedial measure for waterlogging?