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

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Soil Mechanics and Foundation
Effective stress on soil

Increases both voids ratio and permeability
Decreases voids ratio and increases permeability
Decreases both voids ratio and permeability
Increases voids ratio and decreases permeability

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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
Uniformity coefficient represents the shape of the particle size distribution curve.
For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
None of these

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Soil Mechanics and Foundation
The average coefficient of permeability of natural deposits

Parallel to stratification is always greater than that perpendicular to stratification
Is always same in both directions
Parallel to stratification is always less than that perpendicular to stratification
Parallel to stratification may or may not be greater than that perpendicular to stratification

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