Geology and Geophysics
GATE GG-1 Elements of hydrogeology PYQs
Build your understanding with focused practice from past exam papers.
How to practice Elements of hydrogeology
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–8 of 8. Imported answers require independent review unless marked reviewed.
Question 25
Open questionGGNAT2 marksNeeds review
If one liter of water at pH 7 is mixed with one liter of water at pH 6, the resulting pH of the mixture is __________
(Round off to two decimal places)
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Open questionGGNAT1 markNeeds review
The cross section of a river channel is approximated by a trapezium. The river has an average channel width of 40 m and average depth of 3 m. If the average flow speed is 2 m/s, the discharge rate is ________ m³/s. [in integer]
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 18
Open questionGG - G1NAT1 markNeeds review
A constant-head permeability test was performed on a vertical sand column of height 40 cm and cross-sectional area of 25 cm². During the test, when the loss of head was 50 cm, the volume of water collected in 2 minutes was 300 cm³. Applying Darcy’s law, the calculated coefficient of permeability of the sand column is ______ cm/sec. [round off to 2 decimal places]
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 21
Open questionGG - G1NAT1 markNeeds review
The water table in an unconfined aquifer at a place near the coast is 1 m above the Mean Sea Level. Given the densities of fresh and saline water as 1.001 and 1.025 g/cc, respectively, the fresh-saline water interface at the same location should be at a depth of ______ m from the water table. [round off to one decimal place]
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 14
Open questionCMCQ1 markNeeds review
The dimension of transmissivity of an aquifer is
Your answerChoose one option.
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Open questionPART AMCQ1 markNeeds review
Transmissivity of an aquifer is the product of ______.
Your answerChoose one option.
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Open questionPART-AMCQ1 markNeeds review
Pascal second is a unit of
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 8
Open questionGG-CMCQ1 markNeeds review
The groundwater flow equation
, where h refers to the hydraulic head and x, y, z are coordinates, is valid when the flow condition isYour answerChoose one option.
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