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Worksheets13/01/26-Civilwar-Overseer grade 1-Sources of water 1
Total questions: 10
Worksheet time: 5mins
River water is preferred as a water supply source mainly because it has:
High mineral content
Constant discharge
Self-purification action
No suspended solids
Water stored for a long time in an impounding reservoir should be:
Filtered and softened
Chlorinated and aerated
Heated and filtered
Only aerated
Which source represents the natural outflow of groundwater at the earth’s surface?
Pond
Spring
Lake
Stream
In an artesian spring, the pervious layer is:
Exposed directly to atmosphere
Above the water table
Sandwiched between impervious layers
Present only in plains
An infiltration gallery is best described as:
A vertical well in rocky strata
A horizontal tunnel in water-bearing strata
A surface storage tank
A shallow open well
Water collected from several infiltration wells is stored in a common sump called:
Percolation tank
Jack well
Tube well
Aquifer well
Which groundwater term refers to a formation that can store but not transmit water?
Aquifer
Aquifuge
Aquiclude
Aquitard
A confined aquifer is also known as:
Water table aquifer
Gravity aquifer
Artesian aquifer
Perched aquifer
Specific yield is defined as the ratio of:
Water retained to aquifer volume
Water transmitted to aquifer volume
Water obtained under gravity to aquifer volume
Void volume to total volume
Which relation between permeability and transmissivity is correct?
T = d / k
T = k + d
T = k × d
T = k − d
