List of top Geology Questions on Hydrogeology asked in IIT JAM GG

An aquifer with a hydraulic conductivity of 60 m/day experiences a head loss of 20 m over a length of 1000 m. The flow of water per unit area, in millimeter per minute, is..............
In a laboratory experiment, water discharge through a porous rock sample in 2 hours was 10 cm3. The cylindrical rock sample is 10 cm long and has a diameter of 50 mm. If the discharge occurred at a constant head of 300 cm, the coefficient of permeability of the rock sample is _________ ×10–6 cm/s. (Round off to two decimal places.)
Which one of the following statements is FALSE?
Two vertical wells penetrating a confined aquifer are 200 m apart. The water surface elevations in these wells are 35 m and 40 m above a common reference datum. The discharge per unit area through the aquifer is 0.05 m/day. Using Darcy’s law, the coefficient of permeability is _________ m/day.
Which of the following statements is/are correct with reference to subsurface water?
The mass of a fully dried rock sample of volume 100 cm³ is 300 g. The mass of the sample, when fully saturated with water of density 1.00 g/cm³, is 325 g. Assuming no volume change, the computed porosity of the rock is ........ % (answer in one decimal place).
A confined sandstone aquifer with a uniform cross-sectional area of 7 m² and a hydraulic conductivity of 2 m/s, transmits water across a hydraulic gradient of 3.2. Assuming steady state Darcian flow, the volumetric flow rate through the aquifer is .......... m³/s (answer in one decimal place).