Q43: Match List-I with List-II:Choose the correct answer from the options... - Biochemical Conversion Technology - Renewable Energy Engineering- ICAR JRF/SRF 2024 | Agrigyan

• Groundwater Wells and Drilling Technologies:
• Percussion (cable tool) drilling $\to$ (II): Uses heavy drill bits lifted and dropped repeatedly, exceptionally suited for hard, fractured, consolidated formations (rock/boulders).
• Rotary drilling $\to$ (I): Uses a rotating bit with circulated drilling mud (bentonite), fast and optimal for unconsolidated formations (sands, silts, clays).
• Artesian well $\to$ (IV): Taps a confined aquifer under hydrostatic piezometric pressure higher than the top of the aquifer (or ground surface).
• Perched aquifer $\to$ (III): A local lens of groundwater resting on an impermeable stratum above the regional main water table, behaving as a localized unconfined aquifer.
• Matching Result: (A) - (II), (B) - (I), (C) - (IV), (D) - (III) (Option 3).

Correct option: (3) (A) - (II), (B) - (I), (C) - (IV), (D) - (ttl)