Soil Mechanics and Foundation
Quick sand is a

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

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Soil Mechanics and Foundation
Which of the following statements is correct?

A soil is said to be well graded if it has most of the particles of about the same size
None of these
For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
Uniformity coefficient represents the shape of the particle size distribution curve.

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Soil Mechanics and Foundation
With the increase in the amount of compaction energy

both optimum water content and maximum dry density decrease[ES 93]
both optimum water content and maximum dry density increase
optimum water content decreases but maximum dry density increases
optimum water content increases but maximum dry density decreases

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

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