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

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Soil Mechanics and Foundation
If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then

The liquid limit of soil always increases
The liquid limit of soil always decreases
The liquid limit of soil may increase
The liquid limit of soil may decrease

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Soil Mechanics and Foundation
Degree of consolidation is

directly proportional to drainage path and inversely proportional to time
directly proportional to square of drainage path and inversely proportional to time
directly proportional to time and inversely proportional to drainage path
directly proportional to time and inversely proportional to square of drainage path

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Soil Mechanics and Foundation
The effect of cohesion on a soil is to

reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99]
increase both the active earth pressure intensity and passive earth pressure intensity
reduce both the active earth pressure intensity and passive earth pressure intensity

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