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OBJECTIVE TYPE
QUESTION BANK
ENGINEERING HYDROLOGY &
GROUND WATER MANAGEMENT
PRACTICE QUESTIONS/OBJECTIVE TYPE QUESTION BANK-V
Unit Name: Well Construction, Ground Water Modeling &Recharge TOPIC-WISE OBJECTIVE QUESTIONS
Water Wells: Introduction to Well
Construction, Completion& Development
Pumping Equipment for Water Wells
Maintenance of Wells
Ground Water Quality
Ground Water Contamination & Control
Measures
Ground Water Modeling Techniques
&Exploration
Artificial Discharge &Recharge of
Ground Water
Roof Top Harvesting &Recharge
TOPIC
Water Wells: Introduction to Well Construction, Completion& Development [A] Questions have just one correct option: Correct Possibility Q1) Which one is the more modern method of well construction using precast reinforced concrete rings? (a)Digging (b)Draining (c)Drilling (d) Caissoning (d) Q2) How are the driven wells constructed? (a)Through hardened drive point and screen of perforated pipe (b)Through hand drilling method using a bit (c)Through machine drilling using a bit (d)Through digging &drilling (a) Q3) What is drill bit in context to well construction? (a)Driving tool (b)Excavating tool (c)Cutting tool (d)Finishing tool
[B] The following queries have more than one correct option: Correct Possibility Q8) Which one is the main aspect of well efficiency? (a)Designing the most efficient well (b)Selecting most efficient pump (c)Operating system at the most efficient discharge (d)All of the above (d) Q9) Well development by backwashing consists of: (a)Discharge Pipe (b)Air pipe (c)Chemical use (d)Up and down movement of a bailer (a)&(b) Q10) Well shrouding -------------------- (a)Increases the effective well diameter (b) Decreases the effective well diameter (c)Protects the well pipe from caving of surrounding formations (d)Is a process of interposing fine particles between the well pipe and aquifer soils (a)&(c) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution Correct Possibility Q11) In which method of well development, three-way cock use is must? (a)Development by pumping
(b) Development by surging (c)Development by backwashing (d)Development by compressed air (c) Q12) Well shrouding is essential in-------------and------------formations of aquifer. (a)Clayey, Consolidated (b)Clayey, Unconsolidated (c)Sandy, Consolidated (d)Sandy, Unconsolidated (d) TOPIC Pumping Equipment for Water Wells [A] Questions have just one correct option: Correct Possibility Q13) Which one is not a water lifting device? (a)Injector (b)Use of a bucket &pulley system ©Air Pump (d)Generator (d)
Q18) The component of a submersible water well system is------------------- (a)Pressure Tank (b)Variable Speed Controller ©Submersible Pump (d)All of the above (d) Q19) A deep well jet pump utilizes------------------------- (a)More electricity than submersible pump (b) Less electricity than submersible pump © More electricity than shallow well jet pump (d) Less electricity than shallow well jet pump (a)&(c) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility Q20) What is the circumstance for failure of submersible pump? (a)If it is installed in the well (b)If specified pressure is reached at the pressure tank ©Water level in the well is more than the top of the submersible pump (d)If pressure fluctuation takes place (d) Q21) Which type of pump is in common use due to its replacement cost and reliability? (a)Jet Pump
(b)Submersible Pump ©Solar Pump (d) Air driven Pump (b) TOPIC Maintenance of Wells [A] Questions have just one correct option: Correct Possibility Q22) Which major changes in well characteristics is an indication that well or pump needs attention? (a)Increased pumping rate (b)Increased water level ©Increased specific capacity (d)Increased sand or sediment content in the water (cloudiness) (d) Q23) Identify the physical method which does not include injecting water (and sometimes chemicals) into the well under extreme pressure? (a)A brush attached to a drilling rig (b)High pressure jetting ©Hydro fracturing (d)Well surging (a) Q24) Major forms of incrustations cannot occur from buildup of------------- (a)Calcium and magnesium salts, (b)Iron and manganese compounds,
Q28) Which factor is responsible for water well pump damage? (a)Pumping of abrasive sand or sediment (b)Corrosion of pump parts ©Excessively low operating temperatures (d)All of the above (a)&(b) Q29) Excessive sediment concentrations in well water can be brought about by ----- (a)Inadequate initial well development, (b)Absence of a well screen in a loose rock formation, ©Oversized screen openings, (d)All of the above. (d) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility Q30) Delaying rehabilitation procedures can significantly ----------------- (a)Increase costs (b)Decrease costs (c)Neither decrease nor increase cost (d)No effect on cost (c) Q31) Abrasive deterioration resulting from--------- is the leading cause of pump failure. (a)Over Water Pumping. (b)Under Water Pumping (c)Sand Pumping (d)All of the above
(c) TOPIC Ground Water Quality [A] Questions have just one correct option: Correct Possibility Q32) When water quality is corrosive, the recommended material for well screen is---- (a)Steel (b)Cast iron (c)Brass (d)Fiber Glass (d) Q33) The maximum permissible limit of fluoride in ppm in drinking water is------ (a) (b) (c) (d) (b) Q34) What is the solubility of fluorite in pure water at 25^0 C? (a)8.7 ppm (b)6.3ppm (c)7.0ppm (d)9.3ppm (a) Q35) The most important ground water quality parameter for domestic use of water is:
Q39) Which activity can protect and conserve ground water quality? (a)Increasing chemical use (b)Use of toxic household cleaner (c)Waste Management (d)Recycling of wastewater (c)&(d) Q40) The choice of screen material and screen design in context to ground water is governed by---------------------- (a)The size and gradation of aquifer material (b)Discharge (c)Chemical quality of ground water (d)All of the above (d) [C] Analytical and Numerical Problems: In the below problem statements determine the correct solution Correct Option Q41) According to new ground water table concept, the ground water layers which are separated by hydro-geoids level are: (a)Permeability Zone& Density Zone (b)Dynamic ground water& Static ground water (c) Dynamic ground water& Gravitational ground water (d)Gravitational ground water &Static ground water (c) Q42) Select the incorrect statement about ground water quality improvement: (a)Reducing of wastewater (b)Reusing of wastewater
(c)Recycling of wastewater (d)Recharging of wastewater (d) TOPIC
Ground Water Contamination & Control Measures
[A] Questions have just one correct option: Correct Possibility Q43) Presence of excess nitrates of ground/river water indicates: (a)Recent pollution of water with sewage (b)Past pollution of water with sewage (c) Pollution of water with sewage is under progress (d)Immediate pollution of water with sewage (b) Q44) What is “ DRASTIC ”? (a)New method used for determination of ground water quality (b)Standardized System to evaluate ground water pollution potential using hydro geologic setting (c)Method adopted for finding out depth of ground water table at any given site (d)None of these (b) Q45) The contaminated water can have long time serious cause & effect as----------------- (a)Poisoning caused by toxins that have leached into well water supplies (b)Dysentery may be caused by contamination from septic tank water waste (c)Wildlife can be harmed (d)Certain types of cancer may also result from exposure to polluted water (d) Q46) Ground water characteristics must be monitored at least once in a _________ till design span. (a) Week
(d)All of the above [C] Analytical and Numerical Problems: In the below problem statements determine the correct solution: Correct Possibility Q51) Select the incorrect statement in context to ground water contamination: (a)Underground water is less prone to contamination than surface water (b)Percolating water down from the surface is filtered as it passes (c)A well flooded in heavy rainstorm can be concentrated source of contamination of ground water (d)None of these (d) Q52) Which one is not the potential source of ground water contamination? (a)Controlled Hazardous Waste (b)Uncontrolled Hazardous Waste (c)Landfills (d)Septic Systems (a) TOPIC Ground Water Modeling Techniques &Exploration [A] Questions have just one correct option: Correct Possibility Q53) Which is not source of ground water recharge modeling? (a)Rainfall (b)Deep percolation by canals or by wells or tube wells. (c)Percolation from storage tanks, (d) Water harvesting structures (d)
Q54) In water balance approach all the components of water balance equation, other than rainfall recharge, are estimated using relevant hydrological data by dividing the year into------------------ (a)Monsoon and Non-monsoon Periods. (b)Seasonal and Non-seasonal Periods (c)Summer, Winter and Spring Periods (d)Monthly Periods (a) Q55) The recharge to groundwater from rainfall can be modeled by: (a) Water table fluctuation method (b) Empirical methods (c) Tracer techniques (d)Horizontal variation of soil moisture (d) Q56) ---------------------- are commonly used to predict infiltration for ponded conditions for ground water modeling? (a)Double ring cylinder infiltrometer (b)Tensiometer (c) Lysimeter (d) All of the above (a) Q57) Groundwater levels rise during monsoon period depends on the ----------------------- (a)Specific yield of the formation materials comprising the zone of saturation (b) Specific yield of the formation materials comprising the zone of aeration (c) Specific yield of the aquifer comprising the zone of aeration (d) Specific yield of the aquifer comprising the zone of saturation (a)
(a) Q61) Efficient plan and management of water resources needs ----------------- (a)Precise estimation of groundwater potential of a region (b)Approximate estimation of groundwater potential of a region (c) Precise estimation of existing groundwater of a region (d)Approximate estimation of existing groundwater of a region (a) TOPIC Artificial Discharge &Recharge of Ground Water [A] Questions have just one correct option: Correct Possibility Q62) Artificial recharge techniques normally address to --------------------------- (a) To enhance the sustainable yield in areas where over-development has depleted the aquifer. (b) Conservation and storage of excess subsurface water for future requirements since requirements often changes within a season or a period. (c) To increase the existing ground water quality by dilution technique. (d) To remove bacteriological and other impurities from sewage and wastewater so that water is suitable for re-use . (b) Q63) Which effects are generated by artificial recharge in ground water reservoir namely: (a) Rise in water level & Increment in the total volume (b)Fall in water level & Increment in the total volume (c) Rise in water level & decrement in the total volume (d) Fall in water level & decrement in the total volume (a) Q64) The artificial recharge of ground water is normally taken in areas: (a). Areas where ground water levels are declining on irregular basis. (b) Areas where substantial amount of aquifer has already been saturated.
(c). Areas where availability of ground water is sufficient in lean months. (d) Fresh water containing areas where salt water invading is in process. (d) Q65) Which is not the type of source water may be available for artificial recharge? (a)In situ precipitation on the watershed. (b) Large reservoirs within basin area-based canal supply ((c) Surface Supply from trans basin water trnsfer. (d)Untreated municipal and industrial wastewaters. (d) Q66) Groundwater discharge represents----------------------------- (a)Upward outflow of groundwater from the subsurface that occurs naturally (b) Downward outflow of groundwater from the subsurface that occurs naturally (c) Upward inflow of groundwater from the subsurface that occurs naturally (d) Downward inflow of groundwater from the subsurface that occurs naturally (a) [B] The following queries have more than one correct option: Correct Possibility Q67) The aquifers best suited for artificial recharge are those aquifers----------------- (a)Which absorb large quantities of water (b)Which absorb small quantities of water (c)Aquifers do not release water too quickly (d) Aquifers release water immediately (a)&(c) Q68) The sub-surface storages have advantages of being free from the adverse effect------ (a)Inundation of large surface area, (b)Loss of cultivable land, (c)Displacement of local population (d)All of the above (d)
