Perched aquifers are generally found
(A) On the surface of the ground
(B) Below the surface of the ground but above water table
(C) Below the water table
(D) All the above
Description : Perched aquifers generally occur (A) Below water table (B) Above water table (C) In aquicludes (D) In artesian aquifers
Last Answer : (B) Above water table
Description : Pick up the correct statement from the following: (A) Perched aquifer is found in unconfined aquifer (B) The top surface of the water held in the perched aquifer, is known as perched water table (C) Perched aquifer is formed in unfined acquirer if an impervious layer exists (D) All the above
Last Answer : Answer: Option D
Description : Ground water is recharged by different aquifers, which of the following is not an aquifer: a. Bore well b. Dug well c. Sprinkler. D. Recharge pit
Last Answer : c. Sprinkler
Description : An aquiclude is (A) A non artesian aquifer (B) An artesian aquifer (C) A confined bed of impervious material between aquifers (D) A large water body underground
Last Answer : (C) A confined bed of impervious material between aquifers
Description : Pick up the incorrect statement from the following: (A) The rate of flow of water through a unit cross-sectional area under a unit hydraulic gradient, is called coefficient of permeability (B) ... aquifers, is governed by the Darcy's law (D) The term 'transmissibility' was introduced by Meinzer
Description : Auger boring (A) Is the most primitive method for making a hole in the ground (B) Is generally employed in cohesive and other self soils above water table (C) Is most economical upto a depth of 5 metres (D) All the above
Description : In ordinary residential and public buildings, the damp proof course is generally provided at (A) Ground level (B) Plinth level (C) Water table level (D) Midway ground level and water-table level
Last Answer : Answer: Option B
Description : If the water table rises upto ground surface, then the (A) Effective stress is reduced due to decrease in total stress only but pore water pressure does not change (B) Effective stress is ... D) Total stress is increased due to decrease in pore water pressure but effective stress does not change
Last Answer : (B) Effective stress is reduced due to increase in pore water pressure only but total stress does not change
Description : Rise of water table above the ground surface causes (A) Equal increase in pore water pressure and total stress (B) Equal decrease in pore water pressure and total stress (C) Increase in ... pressure but decrease in total stress (D) Decrease in pore water pressure but increase in total stress
Last Answer : Answer: Option A
Description : The head against which the motor works for lifting water, is (A) Maximum depth of water table below ground level (B) Maximum depression head (C) Velocity head (D) All the above
Last Answer : (D) All the above
Description : The depth of the water table at a place is 45 m below the general ground level. To lift water from a deep tube well in such a locality, the type of pump to be installed is (A) Centrifugal pump (B) Reciprocating pump (C) Deep well turbine pump (D) None of these
Last Answer : (C) Deep well turbine pump
Description : Pick up the correct statement from the following: (A) The zone below water table, is called zone of saturation (B) The zone above water table, is called zone of aeration (C) The water which exists in the zone of saturation, is called ground water (D) All the above
Description : How do wells get their water from underground rivers/aquifers/lakes/deposits? -Geography
Last Answer : answer:
Description : Water gets evaporated from water surfaces and land surfaces, get converted into water drops at lower temperatures, flows over ground surface and finally meets its source, i.e. lake, sea, etc. This ... Hydrological cycle (B) Water cycle (C) Evaporation and precipitation cycle (D) All the above
Description : What forms gold oil and aquifers?
Last Answer : geologic processes
Description : Identify the method of recharging groundwater aquifers. (a) Bore wells (b) Recharge trenches (c) Percolation pits. (d) Recharge trenches.
Last Answer : (c) Percolation pits.
Description : Pick up the incorrect statement from the following: (A) Free surface ground water is subjected to atmospheric pressure (B) Water table surface rises and falls with seasons (C) ... directly proportional to the rate of drawl of water (D) Level of water table remains stationary
Last Answer : (D) Level of water table remains stationary
Description : Pick up the correct statement from the following: (A) The water level in a still well, represents the ground water table level (B) The difference between water table level and the water ... water table surrounding a well during pumping, forms a cone of depression (D) All the above
Description : Rise of water table in cohesion-less soils upto ground surface reduces the net ultimate bearing capacity approximately by (A) 25 % (B) 50 % (C) 75 % (D) 90 %
Last Answer : (B) 50 %
Description : Pick up the correct statement from the following: (A) The rise of the ground surface due to frost action is called frost heave (B) The freezing of water is accompanied by a volume increase of 9% (C) Below freezing point, higher soil suction develops (D) All the above
Description : The toe projection of foundation slabs is taken (A) As one third of the base (B) As one sixth of overall height of the wall (C) Equal to heel slab (D) Below ground surface
Description : An isobar is a line which connects all points below the ground surface at which (a) The local ground elevation is same (b) The settlement is same (c) The vertical stress is the same (d) The ground elevation is varying
Last Answer : (c) The vertical stress is the same
Description : Depth of reinforcement below the surface of a concrete pavement, is generally kept (A) 5 cm (B) 6 cm (C) 7 m (D) 9 m
Description : My first is found on the ocean wave, In the spring, the pit, and the mine; My second below earth’s surface you have, Where seldom the sun can shine. My whole your dinner-table must grace, And seldom fails to obtain a place.What am I? -Riddles
Last Answer : Salt-cellar.
Description : In gravity canals, F.S.L. is a. Always at the ground level b. Always below the ground level c. Generally 4 to 5 meters above the ground level d. Only a few cm above the ground level
Last Answer : d. Only a few cm above the ground level
Description : Field capacity represents the maximum quantity of water held: w) in the soil against the force of gravity x) in the ground water zone y) in the intermediate zone z) below the water table
Last Answer : ANSWER: W -- IN THE SOIL AGAINST THE FORCE OF GRAVITY
Description : Where the water table meets the ground surface groundwater bubbles or flows out of cracks in the rock in openings called?
Last Answer : A natural spring
Description : Subsidence results due to the constant or excess removal of ground water deplete the water table and increases the area of ____________. (A) Water table (B) Ground surface (C) Zone of saturation (D) Vadose zone
Last Answer : (D) Vadose zone
Description : A water channel supported above the ground over trestles, is generally called (A) Flume (B) Canal (C) Aqueduct (D) Tunnel
Last Answer : (A) Flume
Description : Pick up the correct statement from the following: (A) Rain which is intercepted by buildings, vegetations and other objects, is generally known as rainfall interception (B) The difference between ... the interception rainfall, water reaches the ground and infiltration starts (D) All the above
Description : A circular gravity aqueduct is not generally preferred to because of (A) Its maximum hydraulic mean depth (B) Maximum area per unit of wetted perimeter (C) Minimum cost of construction (D) Its proper support on the ground
Last Answer : (D) Its proper support on the ground
Description : Subtense tacheometry is generally preferred to if ground is (A) Flat (B) Undulating (C) Mountainous (D) Deserts
Last Answer : (B) Undulating
Description : Lime concrete is generally used for (A) Wall foundations (B) Flooring at ground level (C) Both (A) and (B) (D) Neither (A) nor (b)
Description : The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may ... of reduced level (A) 1500 m (B) 1505 m (C) 1475 m (D) 1485 m
Last Answer : (D) 1485 m
Description : Pick up the correct statement from the following: (A) If ground water enters the channel, the channel is known as effluent channel (B) If water goes out of channel to meet ground water, the channel ... level than the water level in channel, ground water flows to the stream (D) All the above
Description : The depth of the ground water table may be ascertained by (A) Looking through the well in the vicinity (B) Standing on the well in the vicinity (C) Measuring the depth of water in the well (D) None of the abov
Last Answer : Answer: Option C
Description : Consider the following places: 2. Shimla 3. Gangtok 4. Mumbai 5. Delhi Arrange these places in decreasing order of their atmospheric pressure on their ground surface using the codes given below: [CDS 2002] (a) 3, 4, 1, 2 (b) 4, 3, 2, 1 (c) 3, 1, 4, 2 (d) 2, 4, 1, 3
Last Answer : Ans: (b)
Description : used in the soil when obstruction like stone, roots and weed are hidden below the ground surface. b. a. Straight tooth harrow c. a. Fixed tooth harrow d. None
Last Answer : Ans - a. Spring tooth harrow
Description : ‘Fanning’ smokestack plumes are observed when A. There is an inversion above the ground surface. B. There is unstable atmosphere. C. There is neutrally stable atmosphere. D. The stack height is below an inversion layer.
Last Answer : A. There is an inversion above the ground surface
Description : Outside of cooking utensils are generally left black from below because – (1) it is difficult to clean daily. (2) black surface is a good conductor of heat. (3) black surface is a poor conductor of heat. (4) black surface is a good absorber of heat.
Last Answer : (4) black surface is a good absorber of heat. Explanation: The outside surface of a utensil used for heating is coated black so that it may absorb more heat and make heating quicker. This is because black surface is a good absorber of heat.
Description : Outside of cooking utensils are generally left black from below because (1) it is difficult to clean daily. (2) black surface is a good conductor of heat. (3) black surface is a poor conductor of heat. (4) black surface is a good absorber of heat.
Last Answer : black surface is a good absorber of heat.
Description : During percussion drilling (A) Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole (B) Caving or mixing of strata are caused in soft soils or ... The soil to a considerable depth below the bottom of the hole gets disturbed (D) All the above
Description : Depth of borings for soil investigation, is generally kept below low water level (A) 30 m (B) 35 m (C) 45 m (D) 40 m
Last Answer : (C) 45 m
Description : The maximum harbour depth below lowest low water is generally equal to (i) Loaded draft +1.2 m when bottom is rock (ii) Loaded draft +1.8 m when bottom is soft (iii) Loaded draft +1.2 m when bottom is ... ) and (iii) are correct (C) (ii) and (iv) are correct (D) (iii) and (iv) are correct
Last Answer : (D) (iii) and (iv) are correct
Description : The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground, is known (A) Levelling (B) Centering (C) Orientation (D) Setting
Last Answer : (C) Orientation
Description : The method generally preferred to for contouring an undulating area, is (A) Chain surveying (B) Plane table surveying (C) Tacheometrical surveying (D) Compass surveying
Last Answer : (C) Tacheometrical surveying
Description : To orient a plane table at a point with two inaccessible points, the method generally adopted, is (A) Intersection (B) Resection (C) Radiation (D) Two point problem
Last Answer : (D) Two point problem
Description : The foundations are placed below ground level, to increase (A) Strength (B) Workability (C) Stability of structure (D) All the above
Description : If D is the depth of scour below original bed, then the width of launching apron is generally taken as (A) 1.2 D (B) 1.5 D (C) 2.0 D (D) 2.5 D