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
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.
None of these

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

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