Soil Mechanics and Foundation
Coefficient of consolidation for clays normally

remains constant at all liquid limits
decreases with increase in liquid limit
first increases and then decreases with increase in liquid limit
increases with increase in liquid limit

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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
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

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

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