Soil Mechanics and Foundation
Select the incorrect statement. Effective angle of shearing resistance

increases as the soil gradation im-proves
is rarely more than 30° for fine grained soil
increases as the size of particles increases
is limited to a maximum value of 45°

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Soil Mechanics and Foundation
Quick sand is a

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

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

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