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Groundwater and Hydrogeology MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Groundwater and Hydrogeology. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Groundwater and Hydrogeology chapter is particularly important for students studying Geological engineering. Page-8 section-1

Each section contains 100 MCQs on Groundwater and Hydrogeology .
71
Which method is used to map the depth of the water table?
Discuss
Answer & Solution
Answer: Option A
Solution:
Electrical resistivity method detects the depth to water-bearing layers by measuring resistance to current in subsurface materials.
72
Which zone in the subsurface contains water under atmospheric pressure?
Discuss
Answer & Solution
Answer: Option B
Solution:
The saturated zone holds groundwater under atmospheric or greater pressure, with pores fully filled with water.
73
What is the typical range of porosity for unconsolidated sands?
Discuss
Answer & Solution
Answer: Option C
Solution:
Unconsolidated sands usually have porosity between 25% and 50%, depending on grain shape, size, and packing.
74
Which term is used for a low permeability layer that restricts groundwater movement?
Discuss
Answer & Solution
Answer: Option B
Solution:
An aquitard is a geological formation that slows or prevents the movement of groundwater due to low permeability.
75
The movement of water across the ground surface into the soil is known as:
Discuss
Answer & Solution
Answer: Option C
Solution:
Infiltration is the process where surface water enters the soil and contributes to groundwater recharge or storage.
76
Which parameter determines the ease with which water can flow through porous media?
Discuss
Answer & Solution
Answer: Option A
Solution:
Hydraulic conductivity is a measure of a material's ability to transmit water.It depends on both the permeability of the medium and the viscosity of the fluid.
77
Which type of aquifer is bounded above and below by impermeable layers?
Discuss
Answer & Solution
Answer: Option B
Solution:
Confined aquifer is sandwiched between two impermeable layers, creating pressure within the aquifer.Wells in such aquifers can have artesian flow.
78
Darcy's law is valid for:
Discuss
Answer & Solution
Answer: Option C
Solution:
Darcy's Law applies to laminar flow through saturated porous media.It is the foundational equation in groundwater flow modeling.
79
Which component is NOT part of the hydrologic cycle?
Discuss
Answer & Solution
Answer: Option C
Solution:
Photosynthesis is a biological process and is not part of the hydrologic cycle, which includes processes like infiltration, evaporation, and precipitation.
80
What is specific yield?
Discuss
Answer & Solution
Answer: Option C
Solution:
Specific yield is the amount of water that drains by gravity from a unit volume of saturated aquifer material.It is important for estimating groundwater availability.