Question

Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Artesian aquifer} & I. \ \text{Unconfined aquifer} \\ B. \ \text{Draw down curve} & II. \ \text{Confining formation} \\ C. \ \text{Well development} & III. \ \text{Cone of depression} \\ D. \ \text{Percolation well} & IV. \ \text{Compressed air} \\ \hline \end{array} \]
Choose the correct answer from the options given below:

• A. A-II, B-III, C-IV, D-I
• B. A-II, B-III, C-IV, D-I
• C. A-II, B-IV, C-I, D-III
• D. A-IV, B-I, C-III, D-II

Hint:

Groundwater keywords: - Artesian \(\rightarrow\) Confined - Drawdown \(\rightarrow\) Cone of Depression - Well Development \(\rightarrow\) Cleaning (e.g., with compressed air) - Percolation/Recharge \(\rightarrow\) Adds water to unconfined aquifers

Answer 1

The Correct Option is A

Step 1: Match each groundwater term in LIST I with its correct association in LIST II.
- A. Artesian aquifer: An artesian (or confined) aquifer is an aquifer that is overlain by a layer of impermeable material, known as a II. Confining formation or aquiclude. This causes the water within to be under pressure.
- B. Draw down curve: When a well is pumped, the water level in the vicinity of the well drops. The shape of this lowered water table or piezometric surface is called the III. Cone of depression, and a cross-section of it is the drawdown curve.
- C. Well development: This is the process of cleaning out fine sand and silt from around a new well screen to improve its efficiency. One common method is surging with IV. Compressed air to agitate the formation and remove fine particles.
- D. Percolation well: This is not a standard term. It likely refers to a recharge well or percolation tank, which is a structure used to artificially recharge an I. Unconfined aquifer.
Step 2: Compile the correct pairings.
- A \(\rightarrow\) II
- B \(\rightarrow\) III
- C \(\rightarrow\) IV
- D \(\rightarrow\) I
This combination corresponds to option (A).