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

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

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Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same and also peak strength is same
ultimate strength is different but peak strength is same
ultimate strength is same but peak
ultimate strength is same but peak strength of dense sand is greater than that of loose sand

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