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
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.

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

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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 water content increase with depth but undrained strength decreases with depth
effective stress, water content and undrained strength decrease with depth
effective stress and undrained strength increase with depth but water content decreases with depth

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