Soil Mechanics and Foundation
A fully saturated soil is said to be

three phase system
two phase system with soil and air
two phase system with soil and water
one phase system

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

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

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Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same and also peak strength is same
ultimate strength is same but peak strength of dense sand is greater than that of loose sand
ultimate strength is different but peak strength is same
ultimate strength is same but peak

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