Exam Details
| Subject | hydrogeology | |
| Paper | ||
| Exam / Course | combined geo-scientist and geologist | |
| Department | ||
| Organization | union public service commission | |
| Position | hydro geologists | |
| Exam Date | 2016 | |
| City, State | central government, |
Question Paper
1.
Water balance concept
Specific yield
Drawdown in hydrogeology
Steady-state groundwater flow condition
Electromagnetic radiation
SAR (Sodium Absorption Ratio)
Radon gas in groundwater
High-nitrate groundwater
2 . With a neat sketch, describe the vertical
distribution of groundwater. Write a
note on seasonal variation of ground
water level fluctuation.
With a neat sketch, differentiate
between confined aquifer and
unconfined aquifer. Write a note on
perched aquifer and its significance in
water supply schemes.
Discuss the hydrological properties or
of rocks.
3 What are springs? How are springs
useful as a source of water supply?
Explain the different types
of springs with special reference to hot springs.
Write a note on the importance of
hydrographs.
4 . Explain Darcy's law. What is meant by
'hydraulic conductivity' according to
Darcy's law?
Explain the "cone er depression' with
suitable illustrations.
The thickness of an aquifer is found to
be 20 m. Its hydraulic conductivity is
20 cm/day. Calculate the transmissivity of
the aquifer.
5 . Discuss critically the role of Water Table
Contour Maps and Flow Net Analysis in
groundwater studies.
Explain with neat sketches how
permeability is measured in the
laboratory.
A confined aquifer is 35 m thick and
5 km wide. Two observation wells are
located 1-5 km apart in the direction of
groundwater flow. The head in well 1 is
100 m and in well 2 is 85 m. The
hydraulic conductivity is 2-5 m/day.
What is the daily flow of water through
the aquifer?
the aquifer?
6. Explain the principle involved in
electrical resistivity method of
groundwater exploration.
Discuss the field procedure in
conducting electrical resistivity survey.
Explain how electrical resistivity data
is interpreted using curve matching
technique in 2-layered cases.
7 Explain how hydrogeomorphic mapping
is done using different satellite images
and how they are useful in preparing
groundwater potential zone maps.
Discuss how Geographic Information
System is used in Integrating
thematic maps.
Explain the usefulness of resistivity
logging in delineation of aquifers and
quality of water.
8. What are the causes of saline water
intrusion into coastal aquifers? Explain
the Ghyben-Herzberg relationship
between saline water and freshwater.
What are the possible geogenic sources
of fluoride in groundwater? Comment
briefly on the distribution of fluoride-
enriched groundwater in India.
Discuss on the Pie diagram for
representing hydrogeochemical data.
9.
Enumerate criteria considered for
suitability of groundwater for irrigation
purposes. Comment briefly on each of
them giving emphasis on their working
formula and suitability range.
Discuss in brief on the use of Piper's
trilinear diagram for determining the
groundwater quality.
Explain the role of radio isotopes in
hydrogeological studies.
Water balance concept
Specific yield
Drawdown in hydrogeology
Steady-state groundwater flow condition
Electromagnetic radiation
SAR (Sodium Absorption Ratio)
Radon gas in groundwater
High-nitrate groundwater
2 . With a neat sketch, describe the vertical
distribution of groundwater. Write a
note on seasonal variation of ground
water level fluctuation.
With a neat sketch, differentiate
between confined aquifer and
unconfined aquifer. Write a note on
perched aquifer and its significance in
water supply schemes.
Discuss the hydrological properties or
of rocks.
3 What are springs? How are springs
useful as a source of water supply?
Explain the different types
of springs with special reference to hot springs.
Write a note on the importance of
hydrographs.
4 . Explain Darcy's law. What is meant by
'hydraulic conductivity' according to
Darcy's law?
Explain the "cone er depression' with
suitable illustrations.
The thickness of an aquifer is found to
be 20 m. Its hydraulic conductivity is
20 cm/day. Calculate the transmissivity of
the aquifer.
5 . Discuss critically the role of Water Table
Contour Maps and Flow Net Analysis in
groundwater studies.
Explain with neat sketches how
permeability is measured in the
laboratory.
A confined aquifer is 35 m thick and
5 km wide. Two observation wells are
located 1-5 km apart in the direction of
groundwater flow. The head in well 1 is
100 m and in well 2 is 85 m. The
hydraulic conductivity is 2-5 m/day.
What is the daily flow of water through
the aquifer?
the aquifer?
6. Explain the principle involved in
electrical resistivity method of
groundwater exploration.
Discuss the field procedure in
conducting electrical resistivity survey.
Explain how electrical resistivity data
is interpreted using curve matching
technique in 2-layered cases.
7 Explain how hydrogeomorphic mapping
is done using different satellite images
and how they are useful in preparing
groundwater potential zone maps.
Discuss how Geographic Information
System is used in Integrating
thematic maps.
Explain the usefulness of resistivity
logging in delineation of aquifers and
quality of water.
8. What are the causes of saline water
intrusion into coastal aquifers? Explain
the Ghyben-Herzberg relationship
between saline water and freshwater.
What are the possible geogenic sources
of fluoride in groundwater? Comment
briefly on the distribution of fluoride-
enriched groundwater in India.
Discuss on the Pie diagram for
representing hydrogeochemical data.
9.
Enumerate criteria considered for
suitability of groundwater for irrigation
purposes. Comment briefly on each of
them giving emphasis on their working
formula and suitability range.
Discuss in brief on the use of Piper's
trilinear diagram for determining the
groundwater quality.
Explain the role of radio isotopes in
hydrogeological studies.