Soil Mechanics and Foundation
The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively

0.5 kg/cm² and 0.5 kg/cm²
1.0 kg/cm² and 0.5 kg/cm²
0.5 kg/cm² and zero
zero and zero

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Soil Mechanics and Foundation
Quick sand is a

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

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Soil Mechanics and Foundation
The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing

effective angle of shearing resistance
effective unit weight of soil and effective angle of shearing resistance
cohesion and effective angle of shearing resistance
cohesion and effective unit weight of soil

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Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same but peak
ultimate strength is different but peak strength is same
ultimate strength is same and also 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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