Soil Mechanics and Foundation
The shear strength of a soil

Is directly proportional to the angle of internal friction of the soil
Decreases with decrease in normal stress
Decreases with increase in normal stress
Is inversely proportional to the angle of internal friction of the soil

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Soil Mechanics and Foundation
In a deposit of normally consolidated clay

effective stress increases with depth but water content of soil and un-drained strength decrease with depth
effective stress and undrained strength increase with depth but water content decreases with depth
effective stress, water content and undrained strength decrease with depth
effective stress and water content increase with depth but undrained strength decreases with depth

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Soil Mechanics and Foundation
Coefficient of earth pressure at rest is

greater than both the active earth pressure and passive earth pressure
less than both the active and passive earth pressures
greater than active earth pressure but less than passive earth pressure
less than active earth pressure but greater than passive earth pressure

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