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

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

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

Increases with the increase in the initial voids ratio
Decreases with the decrease in the plastic limit
Decreases 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
Quick sand is a

flow condition occurring in cohesionless soils
flow condition occurring in cohesive soils
flow condition occurring in both cohesive and cohesionless soils
type of sand

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