Groundwater and depletion of water table
groundwater and depletion of water table
Questions
Which of the following is mostly used as a drinking water source by us?
- Sea water
- Glaciers
- Ground water
- None of these
A depletion in the water table of a place is caused by which of the following?
- Constructing factories and houses
- Making concrete roads and floors
- Deforestation
- All of these
Well water is an example of:
- surface water
- rain water
- underground water
- river water
The water table of a place :
- changes from time to time
- changes from palce to place
- goes down when rains are less
- all of these
In a small town, the number of water pumps, concrete houses and roads increased. The water table of that place will :
- get lower
- get higher
- remain unaffected
- none of these
- contain sodium carbonate
- is underground water
- contain distilled water
- contain ice
In a small town, the number of water pumps, concrete houses and roads increased. The water table of that place will:
- get lower
- get higher
- remain unaffected
- none of these
The minimum depth in the soil where all the spaces are filled with water is called:
- saturation level
- ground water table
- ground water
- water table
Deplaction of the water table is due to which of the following resion?
- insufficient rain fall
- industrial activities
- excess of tube wells
- all of them
The water table is:
- the upper level of an underground surface in which the soil or rocks are permanently saturated with water.
- the upper level of an underground surface in which the soil or rocks are unsaturated with water.
- the lower level of an underground surface in which the soil or rocks are permanently saturated with water.
- the lower level of an underground surface in which the soil or rocks are unsaturated with water.
The water table fluctuates:
- by climatic variations
- by the amount of precipitation used by vegetation
- by withdrawing excessive amounts of water from wells
- all of them
Which of the following does not cause a depletion in the water table of a place?
- Constructing factories and houses
- Making concrete roads and floors
- Deforestation
- None of these
What happens to the water table of a place having droughts for a long period of time?
- It gets higher because of continuous evaporation and flow.
- It gets lower because of continuous evaporation and flow
- It gets replenished continuously
- can't say anything
A man digging the ground near a water body found that the soil was moist.As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called:
- water level
- ground water
- water table
- water limit
The process of seeping out water into the ground is called:
- evaporation
- infiltration
- transpiration
- None of these
Groundwater accumulates between the layer of hard rocks. It is known as:
- pond
- water table
- surface water
- aquifer
At places, the groundwater is stored between layers of hard rock below the water table. This is known as __________.
- a reservoir
- an aquifer
- a hard water
- a well water
Water in the aquifers can be usually pumped out with the help of:
- handpumps
- drilling
- tubewell
- both $A$ and $C$
If we dig a hole in the ground near a water body we may find that the soil is ________.
- oily
- moist
- red
- both $A$ and $B$
Groundwater gets recharged by the process of:
- pumping
- heavy rainfall
- infiltration
- None of the above
Tubewell are used to pump out water from :
- tanks
- ground
- river
- aquifer