Neco 2019 Geography Question 34
Practice objective / multiple choice question 34 from the 2019 Neco Geography examination.
A field is drained by a tile placed \(1.2\) m below the ground surface. The hydraulic conductivity of the soil is \(10\) mm h\(^{-1}\) and the drainage coefficient is \(0.3\). Initially the water table is \(0.8\) m below the surface and must be lowered to \(1.4\) m below the surface. Using the formula \(t = \frac{\Delta h \times D}{K \times C}\) where \(\Delta h\) is the change in water‑table depth (m), \(D\) is the distance from the water table to the tile (m), \(K\) is hydraulic conductivity (m h\(^{-1}\)) and \(C\) is the drainage coefficient, calculate the time required in days (1 day = 24 h).
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About This Question
This is Neco 2019 Geography Question 34. It is one of the objective questions from the 2019 Neco Geography examination.
Difficulty level: Medium .
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