Soil Mechanics and Foundation
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in

All of these
the principle of test
the method of preparation of soil suspension
the method of taking observations

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Soil Mechanics and Foundation
The admixture of coarser particles like sand or silt to clay causes

decrease in liquid limit and no change in plasticity index
decrease in liquid limit and increase in plasticity index
decrease in both liquid limit and plasticity index
increase in both liquid limit and plasticity index

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Soil Mechanics and Foundation
The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is

None of these
Vertical if the soil is in an active state of plastic equilibrium
Vertical if the soil is in a passive state of plastic equilibrium
Inclined at 45° to the vertical plane

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