Soil Mechanics and Foundation
Effective stress is

All of these
important because it is a function of engineering properties of soil
the stress at particles contact
a physical parameter that can be measured

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

ratio of volume of voids to volume of solids
None of these
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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Soil Mechanics and Foundation
If the water table rises upto ground surface, then the

effective stress is reduced due to increase in pore water pressure only but total stress does not change
total stress is increased due to decrease in pore water pressure but effective stress does not change
effective stress is reduced due to decrease in total stress only but pore water pressure does not change
total stress is reduced due to increase in pore water pressure only but effective stress does not change

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