Soil Mechanics and Foundation
At liquid limit, all soils possess

different shear strengths of small magnitude
same shear strength of small magnitude
different shear strengths of large magnitude
same shear strength of large magnitude

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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
Inclined at 45° to the vertical plane
Vertical if the soil is in an active state of plastic equilibrium
Vertical if the soil is in a passive state of plastic equilibrium

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