Soil Mechanics and Foundation
Effective stress on soil

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

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Soil Mechanics and Foundation
The shear strength of a soil

Decreases with increase in normal stress
Decreases with decrease in normal stress
Is directly proportional to the angle of internal friction of the soil
Is inversely proportional to the angle of internal friction of the soil

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Soil Mechanics and Foundation
Rise of water table above the ground surface causes

Decrease in pore water pressure but increase in total stress
Equal increase in pore water pressure and total stress
Equal decrease in pore water pressure and total stress
Increase in pore water pressure but decrease in total stress

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