Soil Mechanics and Foundation
Quick sand is a

type of sand
flow condition occurring in cohesionless soils
flow condition occurring in both cohesive and cohesionless soils
flow condition occurring in cohesive soils

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Soil Mechanics and Foundation
Effective stress on soil

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

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Soil Mechanics and Foundation
In hydrometer analysis for a soil mass

both meniscus correction and dispersing agent correction are additive
meniscus correction is subtractive and dispersing agent correction is additive
meniscus correction is additive and dispersing agent correction is subtractive
both meniscus correction and dispersing agent correction are subtractive

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