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GATE 2020 AG – Question 17

Irrigation and Drainage Engineering · Groundwater Hydrology · 1 mark · Multiple choice

Match P confined/semi-confined aquifer property, Q unconfined aquifer property, R semi-confined aquifer property, S special unconfined aquifer case to 1 perched aquifer, 2 storage coefficient, 3 specific yield, 4 leakage factor.

  1. P–3,Q–2,R–1,S–4
  2. P–2,Q–3,R–1,S–4
  3. P–2,Q–3,R–4,S–1
  4. P–3,Q–2,R–4,S–1

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Show answer and explanation

Correct answer: (C) P–2,Q–3,R–4,S–1

Explanation

Confined storage is described by a storage coefficient (P–2); unconfined drainage by specific yield (Q–3). Leakage factor characterizes semi-confined flow (R–4), and a perched aquifer is the special unconfined case (S–1). This gives C.

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