Soil Mechanics and Foundation
Coefficient of compressibility is

different for different types of soils but same for a soil under different states of consolidation
independent of type of soil but depends on the stress history of soil
constant for any type of soil
different for different types of soils and also different for a soil under different states of consolidation

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Soil Mechanics and Foundation
The total discharge from two wells situated near to each other is

greater than the sum of the discharges from individual wells
equal to larger of the two discharges from individual wells
sum of the discharges from individual wells
less than the sum of the discharges from individual wells

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Soil Mechanics and Foundation
Effective stress on soil

Increases voids ratio and decreases permeability
Decreases both voids ratio and permeability
Decreases voids ratio and increases permeability
Increases both voids ratio and permeability

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