[Solved Paper] Junior Hydro Geologist previous Question Paper 390/2021 |Answer Key 88/2023
FINAL ANSWER KEY
Question Paper Code: 88/2023/OL
Category Code: 390/2021
Exam: Junior Hydro Geologist
Date of Test 20-06-2023
Department :Ground Water
Junior Hydro Geologist previous Question Paper 390/2021
Question1:-The term corresponds numerically to the difference between the specific
yield and the total effective porosity.
A:-Storativity
B:-Total head
C:-Specific capacity
D:-Specific retention
Correct Answer:- Option-D
Question2:-The formation in which the pore water pressure generally less than
atmospheric pressure.
A:-Bed rock
B:-Saturated zone
C:-Phreatic zone
D:-None of the above
Correct Answer:- Option-D
Question3:-Water in which salinity tends to reflect various episodes in local
geological history, such as prehistoric incursions of the sea.
A:-Condensation water
B:-Meteoric water
C:-Connate water
D:-Juvenile water
Correct Answer:- Option-C
Question4:-Darcy's law is applicable only for
A:-turbulent and porous media
B:-laminar and porous media
C:-laminar and nonporous media
D:-both laminar and turbulent flows
Correct Answer:- Option-B
Question5:-The residence time for groundwater is approximately
A:-2 weeks to 10,000 yrs
B:-4000 yrs
C:-10-1000 yrs
D:-10 yrs
Correct Answer:- Option-A
Question6:-Which among the following is correct regarding a groundwater basin?
(i) It is hydrogeologic unit with one large aquifer or several connected and
interconnected
aquifers.
(ii) An area of the earth's crust that is underlain by a thick sequence of
sedimentary rocks.
(iii) In limestone areas, the drainage and groundwater basins have the same
configurations.
A:-Only (ii) and (iii)
B:-Only (i) and (ii)
C:-All of the above
D:-Only (i)
Correct Answer:- Option-D
Question7:-Aquifers that are completely confined or unconfined, found in alluvial
valleys, plains or former lake basins where a permeable stratum is overlain or
underlain by semi previous aquitard is known as
A:-Perched aquifer
B:-Leaky aquifer
C:-Idealized aquifer
D:-Water table aquifer
Correct Answer:- Option-B
Question8:-A spring resulting from the expansive force of superheated steam within
constricted subsurface channels.
A:-Mudpot
B:-Geyser
C:-Fracture springs
D:-Contact springs
Correct Answer:- Option-B
Question9:-Lake volume change, evaporation and precipitation of lake can be
estimated by using
A:-Taylor evaporation method
B:-Thornthwaithe - Holz-man equation
C:-Groundwater budget
D:-Hydraulic head
Correct Answer:- Option-B
Question10:-Which among the following statement is true regarding porosity?
(i) Rocks have higher porosities than soils.
(ii) Gravels, sands and silts which are made up of angular and rounded particles,
have
higher porosities than soils rich in platy clay minerals.
(iii) Poorly sorted deposits have lower porosities than well-sorted deposits.
(iv) Clay-rich soils have higher porosities but lower hydraulic conductivities.
A:-Only options (i) and (ii)
B:-Only options (i) and (iii)
C:-Only options (i), (ii) and (iii)
D:-Only options (iii) and (iv)
Correct Answer:- Option-D
Question11:-Which geological formation can provide small domestic water supply
from shallow, large diameter wells?
A:-Sandstone
B:-Clay
C:-Basalt
D:-Conglomerates
Correct Answer:- Option-B
Question12:-Which among the following is true regarding the capillary rise?
(i) The wider the tube, the higher the water level rises.
(ii) The narrower the tube, the higher the water level rises.
(iii) There is no relation between the pore size and water level rise.
A:-Only (i)
B:-Only (ii)
C:-Only (iii)
D:-None of the above
Correct Answer:- Option-B
Question13:-Spring that are found only in Karst aquifers.
A:-Tubular spring
B:-Fracture spring
C:-Fault springs
D:-Doline spring
Correct Answer:- Option-D
Question14:-Choose the correct statement from the below options:
(i) Volcanic rock can form highly permeable aquifers.
(ii) In sandstone, the porosity and yield have been increased by cement.
(iii) Igneous and metamorphic rocks are impermeable in nature.
(iv) Rhyolites are less permeable than basalt.
A:-Only (i)
B:-Only (i) and (ii)
C:-All of the above
D:-Only (i), (iii) and (iv)
Correct Answer:- Option-D
Question15:-Choose the correct definition for Darcy's law:
A:-The flow rate through a porous media is proportional to the hydraulic
gradient and inversely proportional to the area of the flow path.
B:-The flow rate through a porous media is proportional to the head loss and
inversely proportional to the length of the flow path.
C:-The flow rate through a non-porous media is proportional to the head loss
and inversely proportional to the length of the flow path.
D:-The flow rate through a non-porous media is proportional to the head loss
and inversely proportional to the area of the flow path.
Correct Answer:- Option-B
Question16:-The instrument used for measuring soil moisture is
A:-Gravimeter
B:-Neutron probe
C:-Tensiometer
D:-Hydrometer
Correct Answer:-Question Cancelled
Question17:-The hydraulic conductivity of a soil/rock depend on
A:-Arrangement of particles
B:-Shape of particles
C:-Size of particles
D:-All of the above
Correct Answer:- Option-D
Question18:-The unit of Transmissivity is given by
A:-m/day
B:- /day
C:- /day
D:-dimensionless
Correct Answer:- Option-B
Question19:-Match the following items in Set A with Set B:
Set A Set B
(a) Aquiclude - (i) Clay
(a) Aquifer - (ii) Solid granite
(a) Aquifuge - (iii) Sandy clay
(a) Aquitard - (iv) Gravel
A:-a-(i), b-(ii), c-(iii), d-(iv)
B:-a-(ii), b-(i), c-(iii), d-(iv)
C:-a-(i), b-(iv), c-(ii), d-(iii)
D:-a-(ii), b-(i), c-(iv), d-(iii)
Correct Answer:- Option-C
Question20:-Recharge rates are maximum in which of the given formations.
A:-Hard rock formations
B:-Sandstones
C:-Coastal alluvium
D:-Indo-Gangetic alluvium
Correct Answer:- Option-D
Question21:-In the Global water supply, groundwater contributes about
A:-2.14%
B:-0.61%
C:-0.009%
D:-0.001%
Correct Answer:- Option-B
Question22:-In the statements given below, which among the following supports
the process of evaporation:
(i) If the number passing to the vapor state exceed the number joining the liquid,
it results
in evaporation.
(ii) When water passes from the liquid to the vapor state, it will absorb about 590
cal of
heat.
(iii) The vapor pressure of the liquid is inversely proportional to the temperature.
(iv) Evaporation will proceed until the air becomes saturated with moisture.
A:-Only (i)
B:-Only (i) and (ii)
C:-Only (i), (ii) and (iii)
D:-Only (i), (ii) and (iv)
Correct Answer:- Option-D
Question23:-The hydrologic outputs from an area may include
A:-Precipitation
B:-Evapotranspiration from land areas
C:-Surface water runoff
D:-Both (2) and (3)
Correct Answer:- Option-D
Question24:-The least porosity that can be attained with the same grains is found in
A:-Rhombohedral packing
B:-Cubic packing
C:-Octahedral packing
D:-Tetrahedral packing
Correct Answer:- Option-A
Question25:-If the hydraulic conductivity 'k' is independent of the direction of
measurement, then the formation is said to be
A:-Anisotropic
B:-Isotropic
C:-Homogeneous
D:-Heterogeneous
Correct Answer:- Option-B
Question26:-Which among the following statement is true regarding
permeameters?
(i) Permeameters can be used to measure the storage coefficient of the aquifers.
(ii) The falling head permeameter is used for noncohesive sediments.
(iii) The constant head permeameter is used for cohesive sediments.
A:-Option (i)
B:-Option (ii) and (iii)
C:-Option (iii)
D:-None of the option is true
Correct Answer:- Option-D
Question27:-Subtraction of depth of water in the piezometer on the basis of water
from surface elevation.
A:-Head loss
B:-Hydraulic head
C:-Constant head
D:-Hydraulic gradient
Correct Answer:- Option-B
Question28:-In which of the following condition the Bernoulli equation or principle
not be used?
A:-Viscous flow
B:-Incompressible fluid
C:-Steady flow
D:-Laminar flow
Correct Answer:- Option-A
Question29:-The area which represent the height above a datum plane at which the
water level stands in tightly cased wells that penetrates the aquifer.
A:-Saturated surface
B:-Unsaturated surface
C:-Equipotential line
D:-Potentiometric surface
Correct Answer:- Option-D
Question30:-The area which include the contact between an aquifer composed of
sand and a laterally adjacent bed composed of clay.
A:-Equipotential boundary
B:-Permeable boundary
C:-Impermeable boundary
D:-Lateral boundary
Correct Answer:- Option-C
Question31:-Which one of the following point/points are determining the yield of
groundwater system and evaluating the movement?
(i) The position and thickness of aquifers and confining beds.
(ii) The transmissivity and storage coefficient of the aquifers.
(iii) The hydraulic characteristics of the confining beds.
(iv) The position and nature of the aquifer boundaries.
A:-Only (i) and (ii)
B:-Only (ii) and (iv)
C:-Only (i) and (iv)
D:-All of the above
Correct Answer:- Option-D
Question32:-The reason behind saturation by rain and capillary rise destroy the film
causing loss of stability.
A:-Gravitational moisture
B:-Capillary moisture
C:-Hygroscopic moisture
D:-None of the above
Correct Answer:-Question Cancelled
Question33:-The depth to the water in a non-flowing well is subtracted from the
altitude of the measuring point, then the result should be
A:-Velocity head
B:-Mean Sea level
C:-Total head
D:-Pumping rate
Correct Answer:- Option-C
Question34:-Which among the following statement is true regarding fractures?
(i) Crystalline rocks often have a fracture set that parallels the ground surface.
(ii) The density of fractures and the permeability of fractured rock decreases with
depth.
(iii) With increasing depth, the average fracture aperture decreases.
A:-Only (i) and (ii)
B:-Only (ii) and (iii)
C:-Only (i) and (iii)
D:-All of the above
Correct Answer:- Option-D
Question35:-The average amount of time that a water molecule resides in a
particular reservoir before transferring to another reservoir is calculated as
A:-Volume of a reservoir multiplied by the total flux in or out of the reservoir
B:-Volume of a reservoir divided by the total flux in or out of the reservoir
C:-Volume of a reservoir subtracted by the total flux in or out of the reservoir
D:-None of the above
Correct Answer:- Option-B
Question36:-Which among the following process affect the porosity and
permeability of carbonate rocks when it is buried deeply?
A:-Compression
B:-Cementing
C:-Recrystallisation
D:-All of the above
Correct Answer:- Option-D
Question37:-The lateral flow of water from the unsaturated zone to the surface
water body.
A:-Baseflow
B:-Interflow
C:-Overland flow
D:-Quick flow
Correct Answer:- Option-B
Question38:-Which among the following equation shows the correct relationship of
porosity (n) and void ratio (e) of a porous media?
A:-
B:-
C:-
D:-
Correct Answer:- Option-A
Question39:-The crest of the water table, with flow on either side going in opposite
directions.
A:-Equipotential surface
B:-Watershed
C:-Groundwater divide
D:-Groundwater basin
Correct Answer:- Option-C
Question40:-Lysimeter is used to determine which among the following
parameters?
A:-Runoff
B:-Permeability
C:-Infiltration
D:-Evapotranspiration
Correct Answer:- Option-D
Question41:-Which of the following remains constant in the steady state system?
A:-Mass
B:-Energy
C:-Momentum
D:-Density
Correct Answer:- Option-A
Question42:-A reaction occurs in a vessel such that its mass does not change but
its temperature is increased, then the system is which of the following?
A:-Steady-state
B:-Unsteady-state
C:-Cannot say
D:-None of the mentioned
Correct Answer:- Option-B
Question43:-The discharge per unit drawdown at a well is known as
A:-Specific yield
B:-Specific storage
C:-Safe yield
D:-Specific capacity
Correct Answer:- Option-D
Question44:-_________ wells are constructed when low yielding groundwater sources
are found relatively close to the surface, usually less than 30 m (100 ft.). These are
constructed using a rotary bucket auger.
A:-Cap
B:-Drilling
C:-Bored
D:-Surface
Correct Answer:- Option-C
Question45:-Which aquifer is called water table aquifer?
A:-Unconfined aquifer
B:-Confined aquifer
C:-Ground aquifer
D:-Connate aquifer
Correct Answer:- Option-A
Question46:-Which sedimentary rock is told to be the best kind of formation for
groundwater?
A:-Sandstone
B:-Shale
C:-Gravel
D:-Limestone
Correct Answer:- Option-C
Question47:-The yield of a well depends on _________.
A:-Permeability of soil
B:-Area of aquifer opening into the wells
C:-Actual flow velocity
D:-Permeability and actual flow velocity
Correct Answer:- Option-D
Question48:-The performance of a well is measured by its ________.
A:-Specific capacity
B:-Specific yield
C:-Storage coefficient
D:-Permeability coefficient
Correct Answer:- Option-A
Question49:-When two wells are situated near each other, the discharge in
individual well is _______.
A:-increased
B:-decreased
C:-not effected
D:-remains same with respect to each other
Correct Answer:- Option-B
Question50:-What is the speciality of the Artesian Water?
A:-Has a characteristic colour
B:-Has a characteristic odour
C:-Requires no pumping
D:-Requires special type of pumping
Correct Answer:- Option-C
Question51:-The term which is collectively responsible, along with specific yield, for
total porosity of an aquifer is ________.
A:-Unit yield
B:-Specific retention
C:-Unit retention
D:-Specific allowance
Correct Answer:- Option-B
Question52:-What is the isolated water table held by a small extension of
impervious rock called?
A:-Underlying water
B:-Secret water
C:-Perched water
D:-Underwater
Correct Answer:- Option-C
Question53:-What is the upper surface of water in a confined aquifer called?
A:-Primary layer
B:-Secondary layer
C:-First layer
D:-Piezometric layer
Correct Answer:- Option-D
Question54:-Groundwater is a source of trouble at which place?
A:-Plains
B:-Slopes
C:-Rivers
D:-Lakes
Correct Answer:- Option-B
Question55:-The method in which 4 electrons are driven in the ground at equal
distance apart and in a straight line upto a depth which the ground distance is to be
measured.
A:-Seismic refraction method
B:-Geophysical method
C:-Electrical resistivity method
D:-Current extraction method
Correct Answer:- Option-C
Question56:-Which of the following is proved to be useful, ongoing over the site?
A:-Excavation
B:-Escarpments
C:-Flood marks
D:-All of the mentioned
Correct Answer:-Question Cancelled
Question57:-The number of blows required to drive the penetrometer into the
ground through a distance of 300 mm is measured which is known as ________ of
the soil.
A:-Standard penetration resistance
B:-Bearing power of soil
C:-Maximum safe bearing capacity
D:-Allowable bearing pressure
Correct Answer:- Option-A
Question58:-The shock waves so produced travel down in the sub soil strata and
get reflected after striking a hard rock surface below and recorded by the
instrument known as ________.
A:-Microphone
B:-Geophone
C:-Receiver
D:-Sensors
Correct Answer:- Option-B
Question59:-What is the volume of voids in a rock mass expressed in percentage of
total volume of rock called?
A:-Porosity
B:-Voids ratio
C:-Permeability
D:-Specific yield
Correct Answer:- Option-A
Question60:-The following is the name of the instrument used to record earthquake
waves:
A:-Seismograph
B:-Seismogram
C:-Seismometer
D:-Scintillometer
Correct Answer:- Option-A
Question61:-An example of aquitard stratum in the ground profile is a layer of
________.
A:-Granite rock
B:-Clay
C:-Sandy clay
D:-Sandstone
Correct Answer:- Option-C
Question62:-The clogging of well screens and consequent reduction in pump
efficiency is indicated by _________.
A:-the high value of the well-loss
B:-the low value of the well-loss
C:-variable value of the well-loss
D:-both high and low value of the well-loss
Correct Answer:- Option-A
Question63:-Which type of tools can be used to measure the density of the
formation fluid?
A:-Bulk density logging tool
B:-Formation density logging tool
C:-Neutron density logging tool
D:-Nuclear Fluid Densimeter
Correct Answer:- Option-D
Question64:-What does the high capture cross-section signifies?
A:-Water Bearing Formation
B:-Oil Bearing Formation
C:-Gas Bearing Formation
D:-Hydrocarbon Bearing Formation
Correct Answer:- Option-A
Question65:-The general exploration gives information about which of the following
features?
A:-Depth of rock
B:-Composition of soil strata
C:-Ground water level
D:-All of the mentioned
Correct Answer:-Question Cancelled
Question66:-Ground water samples should be collected at least up to a distance
________ km.
A:-2
B:-3
C:-4
D:-5
Correct Answer:- Option-D
Question67:-Leachate containing lead causes ________ in humans in case of long
term exposure.
A:-Anorexia
B:-Tremor
C:-Anaemia
D:-Renal failure
Correct Answer:- Option-A
Question68:-Groundwater contamination from pesticide storage falls under ________
category source.
A:-Agriculture
B:-Commercial
C:-Industrial
D:-Residential
Correct Answer:- Option-A
Question69:-An associated protection of rising water-table is the development of
________.
A:-Loss of nutrients
B:-Loss of good quality of water
C:-Salinity of water
D:-Increase in turbidity
Correct Answer:- Option-C
Question70:-How groundwater contamination occurs from landfill?
A:-Through leachate
B:-Dust
C:-Chemicals
D:-Rodents
Correct Answer:- Option-A
Question71:-SDWA established _________ drinking water source protection
programs.
A:-1
B:-2
C:-3
D:-4
Correct Answer:- Option-C
Question72:-The rock which shows great variation in water yielding capacity is
________.
A:-Sandstone
B:-Granite
C:-Coal
D:-Marble
Correct Answer:- Option-B
Question73:-Groundwater table may be lowered by method
A:-Electro - osmosis method
B:-Vacuum method
C:-Well point system
D:-All of the above
Correct Answer:- Option-C
Question74:-Hydrograph is the graphical representation of
A:-Runoff and time
B:-Surface runoff and time
C:-Groundwater flow and time
D:-Rainfall and time
Correct Answer:- Option-A
Question75:-In India, what is the major cause of water-borne diseases?
A:-Pollution of water
B:-The hardness of water
C:-Scarcity of water
D:-Saline water
Correct Answer:- Option-A
Question76:-Which disease amongst the following is caused by drinking
contaminated water?
A:-Diarrhea
B:-Typhoid
C:-Polio
D:-All of the above
Correct Answer:- Option-D
Question77:-How many types of organic matter are present in the water?
A:-Five
B:-Four
C:-Two
D:-Three
Correct Answer:-Question Cancelled
Question78:-When an aquifer is used to artificially recharge by making it pass
through an intervening layer, the aquifer acts as _________.
A:-A cooling agent
B:-An aerating agent
C:-An odour agent
D:-A filter plant
Correct Answer:- Option-D
Question79:-Alkalinity in water is expressed as milligrams per liter in terms
equivalent to
A:-Magnesium carbonate
B:-Calcium carbonate
C:-Calcium hydrate
D:-Sodium carbonate
Correct Answer:- Option-B
Question80:-Environment Protection Act was implemented in:
A:-1974
B:-1986
C:-1988
D:-1997
Correct Answer:- Option-B
Question81:-Which one is considered as the potential aquifer of Kerala along
coastal plains?
A:-Alluvial deposits
B:-Charnockite
C:-Laterite
D:-Khondalite
Correct Answer:- Option-A
Question82:-Kerala receives an average annual rain fall of
A:-2000 mm
B:-4000 mm
C:-3060 mm
D:-1050 mm
Correct Answer:- Option-C
Question83:-A District of Kerala in which rising trend in ground water level in wells
is observed
A:-Kasaragod
B:-Wayanad
C:-Kottayam
D:-Alappuzha
Correct Answer:-Question Cancelled
Question84:-Block in Kerala which has been classed as critical
A:-Kanhangad
B:-Karadka
C:-Kasaragod
D:-Manjeshwar
Correct Answer:- Option-C
Question85:-Fluoride contamination is seen in
A:-Thiruvananthapuram
B:-Palakkad
C:-Kottayam
D:-Thrissur
Correct Answer:- Option-B
Question86:-The term which is used to describe all types of liquid waste
A:-Sewage
B:-Garbage
C:-Leachate
D:-Smog
Correct Answer:- Option-A
Question87:-Arsenic contamination of ground water is seen in which state of India?
A:-Kerala
B:-West Bengal
C:-Haryana
D:-Karnataka
Correct Answer:- Option-B
Question88:-Which city in India is facing acute water shortage?
A:-Thiruvananthapuram
B:-Bangalore
C:-Mumbai
D:-Chennai
Correct Answer:- Option-D
Question89:-Largest consumer of ground water in the world
A:-United States
B:-China
C:-India
D:-Russia
Correct Answer:- Option-C
Question90:-Which among the following is considered as the very successful
method for conserving ground water?
A:-Artificial recharge
B:-Population control
C:-Rain water harvesting
D:-Waste treatment
Correct Answer:- Option-C
Question91:-The amount of water stored in the soil is known as
A:-Porosity
B:-Specific yield
C:-Effective porosity
D:-Soil moisture
Correct Answer:- Option-D
Question92:-Most commonly seen aquifer in Alappuzha are
A:-Charnockite
B:-Khondalite
C:-Shale
D:-Laterite
Correct Answer:- Option-D
Question93:-An example for a plateau in the Kerala region is
A:-Munnar
B:-Palakkad gap
C:-Kottayam
D:-Kannur
Correct Answer:- Option-A
Question94:-The crystalline rocks of Kerala region belongs to which geologic age
A:-Tertiary
B:-Paleozoic
C:-Mesozoic
D:-Archean
Correct Answer:- Option-D
Question95:-Most developed aquifer system among the Tertiary group in Kerala
A:-Quilon
B:-Alleppey
C:-Warkalli
D:-Vaikom
Correct Answer:- Option-C
Question96:-Among the given rocks which crystalline rocks in Kerala are better
aquifers
A:-Charnockites
B:-Gabbro
C:-Granites
D:-Khondalites
Correct Answer:- Option-A
Question97:-Which district in Kerala has reported more amount of bacterial
contamination?
A:-Alappuzha
B:-Kottayam
C:-Quilon
D:-Kasaragod
Correct Answer:- Option-A
Question98:-High salinities are found in soils and ground water of
A:-Tropical climate
B:-Temperate climate
C:-Sub-tropical climate
D:-Arid climate
Correct Answer:- Option-D
Question99:-Which among the following is considered as the least porous material
A:-Silt
B:-Clay
C:-Sandstone
D:-Shale
Correct Answer:- Option-D
Question100:-Recharge area is that region which
A:-Supplies water to a confined aquifer
B:-Supplies water to a unconfined aquifer
C:-Supplies water to an perched aquifer
D:-Takes water from confined aquifer
Correct Answer:-Question Cancelled
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