Download Objective Type Question Bank-IV On Engineering Hydrology &Ground Water Management and more Quizzes Engineering in PDF only on Docsity!
OBJECTIVE TYPE
QUESTION BANK
ENGINEERING HYDROLOGY &
GROUND WATER MANAGEMENT
PRACTICE QUESTIONS/OBJECTIVE TYPE QUESTION BANK-IV
Unit Name: Well Construction, Ground Water Modeling &Recharge
TOPIC-WISE OBJECTIVE QUESTIONS
Ground Water: Introduction, Varieties of Subterranean Water
Aquifer Properties
Occurrence of Ground Water, Hydrogeology
Ground Water Movement
Steady &Unsteady Flow Through Confined &Unconfined Aquifers
Well Hydraulics
Partially Penetrating & Image Wells, Well Systems
Well Terminology-Mutual Interference & Losses of Wells, Specific Capacity
Topic
Ground Water: Introduction, Varieties of Subterranean Water [A] Questions have just one correct option: Correct Possibility Q1) An outflow of water from a stream, pipe, groundwater geological formation, or watershed is called: (a) Recharge (b)Dismiss (c)Discharge (d)Ejection (c) Q2) The zone now below the land surface where the pores and fractures contain both water and air are: (a)Confining Zone (b)With drawl Zone (c)Unsaturated Zone (d)Saturated Zone (c) Q3) Groundwater could be a supply of bother at that place? (a)Plains (b) Slopes (c) Rivers (d) Lakes (b) Q4) Ground Water is that the water found underground within the cracks and void areas in---------
Possibility Q8) Ground Water is hold on and moves slowly through geologic formation of ----------- (a)Soil &rock (b)Sand& gravel (c)Ponds (d)Reservoirs (a)&(b) Q9) Ground water is of course recharged by: (a)Rainwater (b)Bottom of lakes (c)River Surface Runoff (d)Plants (a)&(b) Q10) The two important factors on that the formation may lie deep or shallow is------------ (a)Physical characteristics of the region (b)Meteorological conditions (c)Discharge rate (d)All of the on top (a)&(b) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution Correct Possibility Q11) After reaching spring water in associate geological formation, it flows-------------- (a)Much quicker than before reaching (b)Much slower than before reaching (c)Same as before reaching
(d)Standstill and no flow takes place (b) Q12) Which isn’t the aeration zone of water: (a)Soil Water Zone (b)Vedose Zone (c)Phreatic Water Zone (d)Capillary Zone (c) Topic Aquifer Properties [A] Questions have just one correct option: Correct Possibility Q13) Porosity is defined as: (a) A layer of porous material. (b)The capability of rock or soil to carry water. (c)The rate at that water moves through rocks or soil (d)Openings between geologic material found underground (b) Q14) Which of the following statements is true? (a)An aquifer in which the water table is at or near atmosphere pressure and is the upper boundary of the aquifer in a confined aquifer (b) In an unconfined aquifer the water level in a well is the same as the water table outside the well. (c)A confined aquifer exists where groundwater is bound between layers of permeable substances (d)When an unconfined aquifer is tapped by a well, water is forced up, and sometimes above the soil surface
(d)Temporarily-State of stagnancy (b) Q19) Aquifer is a geologic formation, which can------------- (a)Store and yield water (b)Store but does not yield (c)Neither store nor yield (d)Yield water only but cannot store (a) [B] The following queries have more than one correct option: Correct Possibility Q20) Aquifers consist of materials------------ (a)Unconsolidated Sand &Gravel (b)Permeable Sedimentary Rocks (c)Consolidated Sand & Gravel (d)All of the above (a)&(b) Q21) Which one is not geologic formation: (a)Aquifer (b)Aquifuge (c)River (d)Streams (c)&(d) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility
Q22) When would the aquifer become irrelevant? (a)When the rocks square measure robust (b) When the rocks square measures impervious (c)When the rocks square measure porous (d)When the rocks square measure weather beaten to an exact extent (c) Q23) What are the factors on which upper limit of the zone depends? (a)Capillary water (b)Saturated water in soil pores (c)Impermeable layer (d)Underground users (d)
Topic
Occurrence of Ground Water, Hydrogeology
[A] Questions have just one correct option: Correct Possibility Q24) The term, “Permeable” is defined as------------------------------- (a) Openings between geologic material found underground (b)The rock capability of holding water (c)Capability of soil for transmitting water through it (d)The porosity of soil or rock (c) Q25) The geologic material of confining layer is made of soil having characteristic features-------? (a). Rock or soil with little or no permeability (b) Rock or soil with little or no hydraulic conductivity
(a) A cooling agent (b) An aerating agent (c) An odour agent (d) A filter plant (d) [B] The following queries have more than one correct option: Correct Possibility Q30) Aquitards may have------------------ (a)High Porosity (b)Low Permeability (c)Low Porosity (d)High Permeability (a)&(b) Q31) Hydraulic conductivity is not influenced by------------------------ (a)Temperature of fluid passing (b)Pressure of fluid passing (c)Soil type i.e. sand, silt &clay (d)Transmissivity characteristics of soil (d) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility Q32) Which quality of rock should be known properly for aquifers? (a)Color Knowledge (b)Geological
(c)Hydro-geological (d)History of geological formations (c) Q33) Which characteristic of soil/rock is not responsible for occurrence of ground water? (a)Transmissivity (b)Diffusivity (c)Electrical Resistivity (d)None of These (d) Topic Ground Water: Movement [A] Questions have just one correct option: Correct Possibility Q34) Which of the following statements is true? (a)The normally saturated zone around a well in a confined aquifer becomes unsaturated as a well is pumped. (b)Porosity & well pumping rate are the influencing factor for the shape of the cone of depression. (c) The land surface on top of the cone of depression is known as the well field (d). All the above. (b) Q35) Which of the following statements is false? (a) The movement of ground water below a contaminant source is primarily responsible for underground pattern of contaminant concentrations (b) The direction of ground water movement results contaminants spreading mostly vertically
(d)Connate Water (a) [B] The following queries have more than one correct option: Correct Possibility Q40) Which statement is correct in reference to zone of saturation? (a)It is a subsurface zone (b) In this zone water is under pressure greater than atmospheric pressure (c) In this zone water is under pressure less than atmospheric pressure (d)It is a surface zone (a)&(b) Q41) Ultimate source of magmatic water is-------------------- (a)Water and hydrous minerals in rocks (b)Plutonic water (c)Lakes, rivers and oceans (d)All of the above (d) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility Q42) More water is stored and yield by an aquifer, if------------------------------- (a)Both porosity and permeability are higher (b) Both porosity and permeability are lower (c)Porosity is high but permeability is low (d)Permeability is high but porosity is low (a)
Q43) A rock is said to be auriferous, if-----------------------------
(a) If it is porous and saturated but not permeable
(b) If it is permeable and saturated but not porous
(c) If it is permeable and porous but not saturated
(d) If it is permeable, porous and saturated
(d) Topic Steady &Unsteady Flow Through Confined &Unconfined Aquifers [A] Questions have just one correct option: Correct Possibility Q44) The loss of water from surface water reservoirs or groundwater aquifers at a rate greater than that of recharge is known as (a)Safe Yield (b)Depletion (c)Drought (d)Drawdown (b) Q45) Leaky aquifer is------------------------- (a)Normal Confined Aquifer (b)Normal Unconfined Aquifer (c)Special Confined Aquifer (d)Special Unconfined Aquifer (c) Q46) What is not the reason of water losses in unconfined aquifer?
unconfined aquifer
(d) An Impervious layer of limited area water body located in water bearing
confined aquifer
(a)&(c) Q50) What is potentiometric surface? (a)An imaginary surface above the unconfined aquifer (b) An imaginary surface above the confined aquifer (c)Potential head indicating surface (d)Top water surface of an aquifer (b)&(c) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility Q51) What is gaining stream? (a). A stream within which groundwater recharge contributes to the stream-flow volume (b) Ground water system recharging stream. (c). A stream in which groundwater discharge contributes to the stream-flow volume (d) Both (a) and(b) (c) Q52) If the porosity of an aquifer is30percent and specific retention is 15%. What will be the specific yield of aquifer of area200 hectare and decline in water table by3.5m? (a)0. (b)0. (c)0. (d)0. (b) Topic
Well Hydraulics [A] Questions have just one correct option: Correct Possibility Q53) What is the best definition of an artesian well? (a). A well tapping a confined aquifer. (b) A well tapping an unconfined aquifer. (c) Water falling under pressure in a well below the top of the aquifer (d) Water in a very well that rises on the top of the highest ground water level attributable to iatrogenic recharge because of induced recharge. (a) Q54) A hole or shaft drilled into the earth to pump water to the surface is referred to as a: (a)Sink Hole (b)Spring (c)Water Supply (d)Wellon (d) Q55) The process of lowering the groundwater level through pumping a well is called------ (a)Drawdown (b)Attenuation (c)Reduction (d)Dwindling (a) Q56) The rate of water contribution to the well increases ----------------------------- (a)With the increase in the depression head. (b)With the decrease in the depression head
(d)If it finds the foundation in the mota formation (c) Q61) If the sub-soil formation is of fine sand, the rough value of the specific yield of well per unit area of the well (K/A) given by Marriot is------------------------- (a) 0. (b) 0. (c) 0. (d) 1. (b) Q62) The most suitable method for of lifting water from the well having depth in range of 12 to 20 meters? (a) Denkli (b) Churus (c) Persian wheel (d) Windmill (c) [B] The following queries have more than one correct option: Correct Possibility Q63) Which One is the correct statement in context to construction of wells? (a)Dug wells are constructed in soft formations (b) Sunk wells are constructed in soft formations (c)Any type of well may be constructed on soft formations (d) Construction of well is done in two ways i.e. dug wells &sunk wells (b)&((d)
Q64) Why open well has big diameter than tube well? (a)Open well has to irrigate more area. (b)Water contribution to the well is natural and therefore, the percolation area has to be more. (c)Storage of water has to be made before irrigation is done (d)Pumping/drawing of water is not required in case of open well (b) &(c) Q65) What is Mota layer? (a)Mota layer sometimes is also known as Marbarwa or Magasan is an impervious layer. (b)Mota layer is an impervious patch of small thickness situated in the previous soil mass. (c)Mota layer gives structural support to the open well and is useful for unlined and partly lined wells (d) All of the above. (d) [C] Analytical and Numerical Problems: Within the below downside statements verify the proper solution: Correct Possibility Q66) A well having both diameter and normal water level below the ground meter as 3 meters in diameter, water level in the well is depressed to 10 meters below the ground level by pumping. If the water rises by 5meters in 4 hours, what is the specific yield of the well?. (a) 2.213 m^3 /hr (b) 5 m^3 /hr (c) 1.242 m^3 /hr (d) 3.224 m^3 /hr (a) Q67) “Well head Protection Area” in context to well is----------- (a) A protected surface and subterraneous zone encompassing a well or well field activity a public water system to stay keep contaminants from reaching the spring water.
