Soil Mechanics and Foundation
Which of the following statements is correct?

For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
A soil is said to be well graded if it has most of the particles of about the same size
Uniformity coefficient represents the shape of the particle size distribution curve.
None of these

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Soil Mechanics and Foundation
Effective stress on soil

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

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Soil Mechanics and Foundation
Sensitivity of a soil can be defined as

None of these
ratio of volume of voids to volume of solids
percentage of volume change of soil under saturated condition
ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state

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