Soil Mechanics and Foundation
The ultimate consolidation settlement of a structure resting on a soil

Decreases with the decrease in the plastic limit
Decreases with the increase in the initial voids ratio
Increases with the increase in the initial voids ratio
Increases with the decrease in the porosity of the soil

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Soil Mechanics and Foundation
A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively

0.2 N/mm² and 0°
0.05 N/mm² and 45°
0.5 N/mm² and 30°
0.05 N/mm² and 0°

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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

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

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